Why More Composters Are Recovering Food Scraps and Certified Compostable Packaging
January 06, 2025
U.S. composters share on-the-ground insights on how food scraps & compostable packaging collection is improving their business—and offer words of advice to fellow composters. Read insights from Black Earth Compost and Glacial Ridge Composting Facility.
In your own words, tell us about your composting facility and process.
Syed Dong, Black Earth: Black Earth Compost is a curbside compost service for households, businesses, municipalities and schools in Eastern Massachusetts, Rhode Island and New Hampshire, as well as a compost manufacturer. As a site foreman, I operate a hybrid system of aerated static piles and windrows. This is a system of composting that involves forcing air through the piles from pipes underneath then periodically turning piles of compost––also known as windrows. I encourage forced aeration when possible, as it allows for more vector control and has faster processing times than traditional windrow. We accept both food and compostable plastic and fiber products. All materials get tipped inside a receiving building with below grade aeration and blended right away with carbon. After a week or two, it goes onto an above grade pipe system for six weeks then onto curing windrows for two months.
Nathan Reinbold, Glacial Ridge: Glacial Ridge Composting Facility is a regional multi-county composting operation in Minnesota, owned and operated by Pope/Douglas Solid Waste Management. We utilize a covered aerated static pile system designed by Engineered Compost Systems (ECS) to manage the organics stream. We built the facility so that it can be expanded over time to meet a growing need. About 6,500 tons per year of source-separated organics are anticipated to be processed once the composting facility has been fully built out. Partnerships were formed with Pope, Douglas, Grant, Stevens and Otter Tail counties to utilize the facility. Finished compost is sold to landscapers and for youth and civic fundraiser events––called Plate to Garden compost!
Why did you decide to accept food scraps and compostable packaging at your facility?
Black Earth: Accepting both food and compostable products enables us to further address the organics waste crisis that is looming over the nation. Food is a valuable resource that must be recovered, and accepting compostable products helps us recover more of it. By processing both food and compostable products, we can also be a resource to the community by offering material that builds quality soil.
Glacial Ridge: We conduct facility waste composition studies every 5 years as part of our permit process. From this study, we found that a significant portion of our delivered regional multi-county municipal solid waste consisted of food scraps and compostable fiber. We decided to develop an organics collection pilot in 2017, and it has now grown to include a number of regional counties participating with a full-scale commercial composting facility that opened in 2022.
How have you adapted or improved your operations to make food-contact compostable packaging work for your process, while still creating a high-quality finished compost?
Black Earth: There are a lot of great benefits that can be unlocked by accepting compostable products, but more work needs to be done so that non-compostable products don’t also end up in our facility. Currently, machines play a role in controlling the contamination that comes in from conventional plastic products that end up in our facilities because they look like compostable products.* Adding a vacuum has been helpful in combating this issue.
Glacial Ridge: We found that the covered aerated static pile composting process to be very user-friendly for managing the compostable packaging part of the organics stream. All composting facilities in Minnesota adhere to and accept only foodservice packaging that is BPI-certified compostable.** This helps to take the guesswork out of being able to accept compostable packaging and to communicate to customers to only use BPI-certified packaging in order to reduce or eliminate contamination and additional processing costs or processes.
*The Composting Consortium’s research shows that contamination is a challenge for most composters, regardless of their material acceptance policies, business model or size. Moreover, conventional plastic constitutes 85% of the incoming contamination that composters receive—highlighting how important it is to rid look-alikes from the system. For more details, read our report here.
**Glacial Ridge Composting Facility accepts BPI-certified compostable packaging. The Biodegradable Products Institute (BPI) is a leading certification body, alongside other certification bodies in the composting industry, such as the Compost Manufacturing Alliance.
How has accepting food-contact compostable packaging brought value to your business and your community?
Black Earth: So many stakeholders need to be involved and aligned to successfully accept and process certified compostable products that bring value to the composting stream. Since Black Earth Composting is a collection and hauling company, as well as a compost manufacturer, accepting compostable bin liners has made the job of servicing bins easy for our customers and truck drivers. This opens the door to folks that previously saw separating food scraps as messy. Also, this leads to driver retention by making the job a little easier.
Glacial Ridge: Accepting feedstocks, over and beyond only food scraps and napkins, allows Glacial Ridge to be customer and user-friendly. Accepting only BPI-certified compostable packaging allows easier adoption of organics recycling programs and opportunities to divert more food scraps from the waste stream. We also administer a zero waste events program where we connect BPI-compostable packaging and specialized color coded event bins, that are monitored by volunteer/VTO ‘Waste Warriors’, with large scale and community-based events to divert food scraps from the waste stream in a very visible and educational manner to create additional buy-in and acceptance from stakeholders.
Any words of advice to fellow composters who are considering accepting food scraps and compostable packaging?
Black Earth: Don’t be afraid of compostable packaging. Education goes a long way and unlocks new opportunities for the composting business and for broader organics circulation! Start small and educate, educate, educate. While it comes with challenges now, compostable products will continue to play a growing role in replacing single-use conventional plastic and have the potential to replace much of the current contamination we see, and bring in more food to composting facilities. Get ready for it.
Glacial Ridge: I recommend that composters work closely with their state chapter of the USCC. In 2023, the Minnesota Composting Council worked to pass a compostable labeling bill. The purpose of this new law was to reduce misleading product claims, reduce confusion among residents, food establishments and more on what products are accepted for composting. The overarching intention was to reduce contamination at compost facilities resulting in them manufacturing a cleaner, more sellable product. We also recommend utilizing professionally-designed color-coded educational materials to be used on organics carts, dumpsters, roll-offs and inside intermediate collection bins––both public-facing and back of house––that include mention of BPI certification for compostable packaging as the gold standard to reduce confusion and lower contamination concerns.
Does Compostable Packaging Actually Turn into Compost? Industry Experts Share Insights
October 31, 2024
Compostable packaging has become increasingly popular on retail shelves––but can it turn into compost if accepted at composting facilities?
In a joint interview, field testing experts, including the Compost Manufacturing Alliance and the Compostable Field Testing Program—both partners of the Composting Consortium, an industry collaboration managed by Closed Loop Partners’ Center for the Circular Economy—share what they have uncovered after 10+ years of in-field experience.
Read more to find out how well compostable packaging actually breaks down into compost, and what’s needed for these materials to work in the organics stream. Curious to learn more about how field testing works? Scroll to the bottom of this post to learn more.
What is your organization’s role in the composting industry?
Compost Manufacturing Alliance (CMA): CMA field tests compostable packaging disintegration and reviews acceptance criteria for some of the largest composting facilities in the U.S. and Canada. Our published list of certified and accepted compostable products includes a significant percentage of compostables throughout North America, with over 5,000 unique, individual products certified or approved from hundreds of global manufacturers. CMA originated from composter-led efforts to address the challenge of some certified compostable packaging not breaking down in the compost process. In 2007, Cedar Grove started a field testing program to develop lists of accepted compostables for its municipal partners and commercial clients, which became nationally recognized. In 2016, CMA’s founder, Susan Thoman, expanded Cedar Grove’s program nationwide, partnering with five large compost facilities. Today, CMA aims to ensure compostable packaging disintegrates properly, protecting composter and packaging manufacturers’ investments and preventing landfill waste.
Compostable Field Testing Program (CFTP): CFTP supports composters with methods and test kits to field test compostable product disintegration at their sites. We then collect and open source the resulting data, including both product disintegration and compost operating conditions. As an international, nonprofit research platform, we look to understand how compostable products break down in real-world conditions. Founded in 2016 by the Compost Research & Education Foundation and BSIbio, our origins begin in 2013 working with university partners to refine and pilot the US Composting Council’s (USCC’s) original “mesh bag” field test method and create a new “dose” method for sites where a bag won’t work.
Composting Consortium (CC): The Composting Consortium, managed by Closed Loop Partners’ Center for the Circular Economy, conducts in-market tests and in-depth research to support the industry in advancing composting infrastructure and the recovery and processing of food-contact compostable packaging and food scraps in the U.S. We launched in 2021, bringing together leading voices across the composting and compostable packaging value chain––from the world’s leading brands to best-in-class composters running the operations on the ground.
Why is field testing compostable packaging important?
CFTP: Composters can only accept compostable packaging if they know that these materials will truly break down and not negatively impact their end product––healthy compost! Biodegradation testing, which happens in a lab environment, is important. It proves that an item is really getting converted at a molecular level by microbial activity. But disintegration testing to see compostable products visibly breaking down is equally important. Field testing compostable packaging is a way to bridge between lab results and real-world disintegration in actual industrial and commercial settings.
CMA: It’s critical to building trust in the composting industry. Many of today’s largest facilities must use technology that works for an evolving list of feedstocks, including post-consumer food scraps. These are different systems than what was used in the beginning years of yard waste and pre-consumer food scrap composting. Commercial composting and compostable packaging have evolved significantly and are continually improving. It’s true that lab standards are now only one step in confirming product safety and disintegration in various composting systems. Products must be proven to break down in facilities to ensure they are not treated as contaminants and end up in landfills.
CC: Compostable packaging is a promising innovation for diverting food waste from landfills to composting facilities, but to be successful, infrastructure must be willing and able to process these materials. Prior to 2024, limited public information existed on the performance of compostable packaging, and we’re glad to see that is changing. Data from field testing replaces anecdotes with data that can drive discussions, decisions and policymaking that will shape a more resilient future for the composting and compostable packaging industries.
What are some of your key findings thus far?
CMA: Contrary to common belief, biopolymers generally disintegrate well in composting. Fiber-based products do not disintegrate as well as biopolymers overall, although compost manufacturers are more comfortable taking in fibers because bioplastics often resemble traditional plastics and are often sorted into the organics bin by mistake. We are also narrowing down the composting conditions that most affect product disintegration. While time is certainly a factor, it is not necessarily conclusive. The interaction between time, moisture, carbon to nitrogen ratio and agitation is complex and dynamic. Our data suggests that no single variable can be considered the key to successfully breaking down compostable products. Each variable within this set of acceptable conditions––such as moisture, carbon to nitrogen, bulk density––affects other variables.
CC: Our report features our top 10 findings, and to be even more succinct, we can boil it down to three key takeaways. First, certified food-contact compostable packaging breaks down effectively at commercial composting facilities that meet reasonable operating parameters––such as moisture, water and temperature––as defined by the Composting Handbook. We collaborated with composters to collect daily and weekly pile readings within these parameters. Second, compostable plastic and fiber packaging met field-testing thresholds for disintegration, achieving 80% and 90% thresholds at the material category level, as per CMA’s standards. Lastly, fiber packaging disintegration improves with mechanical or manual agitation and consistent moisture levels above 50%. For more details, read our report here.
CFTP: Our data shows us that composter acceptance is more complex than just whether a material will disintegrate or not––contamination mitigation, and the role of materials in the composting process play an important part. The results for fiber products always surprise folks; both lined and unlined fiber products––such as “food-soiled paper”––don’t tend to break down as quickly as we might expect, despite their widespread acceptance. On the other hand, biopolymers consistently prove to break down better than what is anecdotally reported in the field. In either case, tests across different technologies––like windrow and aerated static pile––have shown that the operating conditions have to be right for the products to break down. Temperature and moisture have the most significant impacts. The right conditions vary by material, and these conditions apply regardless of technology. Our new online Results Dashboard allows visitors to view how different materials perform, in different facility types and under different conditions.
Where have you seen opportunities for further collaboration or joint work?
CMA: Research in this space is vitally important, but funding for research is scant. Pooling resources to fund, design and conduct research can move the composting and compostable products industries forward faster and more efficiently than any one entity can alone. Conversations, like this one, can shed light on different stakeholders’ perspectives and where we can find common ground. From that common ground, we can each use our own platforms to dispel misperceptions that often lead to bad policy and thwart true progress.
CFTP: Although disintegration trends appear similar across data sets, there are tangible differences in methodology between different testing groups that could benefit from standardization. Creating a collaborative industry standard for field testing could result in more reliable testing and more comparable data between tests. We’ve been collaborating to standardize methods since 2021 under ASTM International, one body which published lab-based disintegration and compostability testing and labeling standards in the 1990s.
CC: Given the key insights that are similar across our organizations, working together to educate composters, policymakers, and packaging manufacturers and brands on the topic of field testing can help expand end-of-life options for compostable materials and close the loop on food waste. We’re really proud of the way our teams are collaborating already! We are all contributing to the development of an ASTM field testing standard, and our team will donate data to developing this method, like we have to CFTP for the launch of its open-source database.
Any final thoughts?
CFTP: Compost operations are as unique as fingerprints, and even a single composter using the same technology will experience a range of operating conditions––such as temperature and moisture––season-to-season or pile-to-pile. Pursuing research on field testing results that correlate to operating conditions is going to help move the needle on understanding compostable packaging, and help composters feel confident in accepting these products, without having to test every product themselves. Importantly, field testing alone can’t solve the challenges facing the circular economy for food scraps and compostable packaging. An aligned and science-based approach that ties policy, systems and technology together is essential, and it’s for this that the CFTP’s non-profit and open-source approach is designed.
CMA: CMA continues to hold a space to connect product designers with compost manufacturers. When we collectively work manufacturer-to-manufacturer, we have a much more efficient way to address the disintegration performance of materials in real world systems. Working together, we can explore the relationship between product constituencies and pile science. Continued collaboration around field disintegration testing and settling on a method, and then a standard, within the ASTM D34 committee, can harmonize research efforts and provide all stakeholders with greater clarity and focus for the future.
CC: Our team has launched several new programs to engage packaging manufacturers, composters and municipalities (cities and counties) to scale infrastructure, and we welcome a conversation with these groups about the results of our disintegration study. If you want to learn more about how we’re supporting the scale up of composting infrastructure, please reach out to Caroline Barry at [email protected].
Learn more about how field testing works below!
How do you test the disintegration of certified compostable packaging?
CMA: The “mesh bag” method has been central to CMA’s composter-centered testing for nearly 20 years. Samples are marked, placed in mesh bags, and layered within a freshly made compost pile at a commercial facility. What makes our testing distinct is that CMA retrieves the mesh bags at the end of the active cycle, as opposed to the end of the curing phase. This means that the bags are extracted, cooled and dried, then our field technicians sift each bag and samples are sent to the lab for further processing. CMA evaluates visual disintegration, which aligns to compost manufacturers’ concerns about visual contamination in their end-product. Our thresholds to “pass” CMA’s field-testing criteria for certification are based on composters’ perspectives. Fiber-based remnants in finished compost are generally considered less problematic than plastic remnants because fiber-based remnants will often continue to disintegrate after active composting, just as they do in ambient conditions. Compostable biopolymers, on the other hand, may or may not continue to disintegrate after active composting and can look like conventional plastic in the finished product. Thus, compostable biopolymers must show >90% disintegration to pass while fiber-based products must show >80% disintegration.
CC: Our disintegration study tested over 23,000 units of fiber and compostable plastic packaging, making it the largest field test of certified compostable packaging in North America. All products and packaging tested in our pilot were either BPI-certified or in the process of certification. This intentional choice ensured no harmful chemicals, such as PFAS, were deliberately introduced into the composting process. We trialed both the mesh bag method and the dose method. Disintegration was measured by percentage reduction in weight and surface area at Day ~47 and at the end of the curing phase. The compostable packaging remained in the compost piles for 49 to 94 days, depending on the facility’s technology. A distinct aspect of our study is the level of data and detail we’ve obtained on composting parameters––such as temperature, moisture and more––alongside disintegration results, which were assessed both in-field and in-lab. Compost operators tracked daily pile temperature, weekly moisture and oxygen readings, and periodically measured bulk density, pH, carbon to nitrogen ratios, compost maturity, and stability. This comprehensive data collection allowed us to correlate the composting conditions with the disintegration performance of the packaging, providing valuable insights into the effectiveness of different composting processes.
CFTP: Most field tests we’ve coordinated have used the ‘mesh bag’ method, where several different items are packed with compost feedstock into a large mesh bag. The bag is tracked along with operating conditions like temperature, moisture and compost maturity, throughout the full composting process, both active composting and curing. At the end of the test, the material in the bag is sifted. Residuals from the test items are extracted and analyzed to measure disintegration by both weight and surface area. We provide a baseline test kit with the same test items across all tests, so we can better see the impact operating conditions have on disintegration. We also developed the “dose” method, similar to the mesh bag method, but with test items loosely piled instead of bagged. More details are available on the CFTP’s results dashboard and website as of fall 2024!
How do your approaches to field testing align or differ from the other groups here? What should stakeholders understand about the differences and similarities in your approaches?
CMA: Cedar Grove Composting’s initial method has been widely adopted, leading to similar mesh bag techniques across organizations. However, CMA has refined its approach, using Ingeo™ PLA as the primary control due to its consistent disintegration in all composting processes. Office paper is also used, though its disintegration varies. CMA avoids the “bulk dose” or open pile method, which places samples directly into the pile. Despite logistical challenges, this method may evolve with continued use. CMA tests products in “real world” scenarios with no pre-shredding or pre-treatment of samples, and only tests disintegration during the active composting phase, unlike other tests that extend into the curing phase, and/or may use pre-shredded or pre-treated samples. Certification requires evaluation after the active phase because some composters screen materials between these phases. Products without additional curing are screened out and reprocessed or sent to the landfill. CMA extends studies through the curing phase upon request but bases certification on active phase results to align with typical composting practices.
CFTP: As a non-profit project, the Compostable Field Testing Program’s activities are funded by grants and donations, both financial and in-kind. The CFTP is committed to open-sourcing the data it collects in as much detail as possible, while honoring our commitment to anonymizing facility’s operating data. CFTP is rooted in collaboration between organizations supporting the circular economy and science-based research to advance industry and inform policy, evidenced by our founding partners BSIbio and CREF, and in providing advisory and implementation services for the Composting Consortium’s Disintegration Study. This model has kept the program grounded in science and problem solving, supported by forward thinking organizations. Also, relative to other field testing initiatives which tend to focus on larger–scale facilities, the CFTP aims to make field testing accessible to composters of all sizes, from community-scale to the largest commercial-scale facilities.
CC: Since our start, the Consortium has aimed to be additive in the field of compostable packaging testing, collaborating with several of our partners including CMA, CFTP and CREF along the way. We were the first group to trial the still-developing ASTM field testing method, where both CFTP and CMA participate. We have donated data to CFTP to support the public launch of their open-source database, and we belong to international collaborations to share insights about our experience field testing compostables. One key difference in our approach is that we measured disintegration at 2 points of the compost process (Day 47 and at the end of curing). This means we may have pulled the mesh bags or packaging from the compost piles later than other field testing groups. We also did not test packaging with the intention of passing or failing any one product. We’ve collected as much data as we have with the intention of applying it to support best management practices for composers who want to accept these materials. While we will not carry out more field tests in the next two years—CMA and CFTP have that covered—we intend to work with the USCC to integrate our findings to update best management practices for composters who accept these materials.
Composting Consortium Releases New Data to Compostable Field Testing Program, Enabling Launch of Database on Compostable Packaging Disintegration
October 24, 2024
The new platform by the Compostable Field Testing Program shares critical data on compostable packaging disintegration from field tests over the last 10 years
USA & CANADA, October 21, 2024: The Compostable Field Testing Program (CFTP) and Closed Loop Partners’ Center for the Circular Economy are pleased to announce the launch of the CFTP’s much-anticipated data-sharing website, offering public access to detailed results from compostable packaging field testing over the last decade, through a dynamic interactive dashboard.
The CFTP’s new platform allows users to explore compostable product disintegration data with an unprecedented level of detail, helping composters, policymakers, regulatory agencies, brands, packaging manufacturers, researchers and consumers evaluate the potential of and opportunities for compostable packaging, and advance the practice of field testing.
The launch of the database is made possible through data donated from the Composting Consortium, an industry collaboration managed by Closed Loop Partners’ Center for the Circular Economy. This data comes from the Consortium’s groundbreaking study in 2023 which analyzed the disintegration of over 23,000 units of compostable packaging in the largest known field test of certified, food-contact compostable packaging conducted in North America. The CFTP provided support on field testing methodology, logistics and data analysis for this study. They also provided test items from their baseline sample kit, unlocking a larger sample set for data collection.
Data donated from the Consortium allowed CFTP to hit its critical anonymization threshold to open-source field testing data collected over the last decade. This marks a milestone for the composting industry, filling a historical data gap on compostable packaging disintegration in-field and providing access to a necessary baseline to inform improved recovery.
“The Composting Consortium’s goal is to support the recovery of compostable packaging, ensuring that the material disintegrates in real world conditions and brings value to composters and the organics stream. Field testing compostable packaging plays a key role in achieving this goal, and was a top priority for the Consortium in 2023, alongside characterizing contamination at compost sites,” says Caroline Barry, Program Manager at Closed Loop Partners’ Center for the Circular Economy. “CFTP played an instrumental role in the success of our disintegration study, and we’re thrilled to share data for their platform, providing the industry with insights that help move the needle on compostable packaging recovery.”
“We had to hit a critical threshold of data and repeated testing under certain conditions to be able to publish the data we’ve been collecting over the last 10 years,” says Emily McGill, Program Director of the Compostable Field Testing Program. “Now, with the data from the Composting Consortium’s disintegration study, we have not only more product disintegration data, but more results on the composters’ operating conditions that provide a crucial link to understanding product breakdown and refining field test methods.”
The collaboration between the organizations has enabled both to share valuable insights into the factors that affect compostable product breakdown, offering practical data to support better product design, composting practices and regulatory standards. The impacts of the Composting Consortium’s disintegration study extend beyond this initial data release. The Composting Consortium recently launched its Composter Innovator Program and Municipal Partner Platform, sharing insights and enabling collaboration to advance the circularity of food waste composting and food-contact compostable packaging.
Later this year, the CFTP will be releasing its refined methods for field testing and a field report, providing more valuable analysis and insights to inform thoughtful compostable packaging development and recovery in the U.S. and Canada.
Explore the Website
Visit the new website for key takeaways of the field testing results and to explore the interactive dashboard at compostabletesting.org.
Media Contacts:
Emily McGill, Program Director, Compostable Field Testing Program
Bea Miñana, Communications Director, Closed Loop Partners
About the Compostable Field Testing Program
The Compostable Field Testing Program is a non-profit research initiative dedicated to providing methods and materials to conduct field testing to composters across North America and beyond. Operating since 2016 as a collaborative venture between Compost Research & Education Foundation and its partner BSIbio, the CFTP provides a standard test kit and a customizable protocol for the common ‘mesh bag method’. When participating facilities share back their results, this data is collected by the CFTP, aggregated and anonymized for eventual public release in an online database. By helping composters evaluate and report on the real-world performance of compostable products, the program provides valuable data to support sustainable product development and composting practices.
About the Center for the Circular Economy at Closed Loop Partners
Closed Loop Partners is a firm at the forefront of building the circular economy. The company is comprised of three key business segments. Closed Loop Capital Management manages venture capital, buyout and catalytic private credit investment strategies on behalf of global corporations, financial institutions and family offices. Closed Loop Builders is an operating group that incubates, builds and scales circular economy infrastructure and services. The Center for the Circular Economy (‘the Center’) is the innovation arm of Closed Loop Partners. The Center executes research and analytics, unites organizations to tackle complex material challenges and implement systemic change that advances the circular economy. The Center’s expertise spans circularity across the full lifecycle of materials, connecting upstream innovation to downstream recovery infrastructure and end markets. Learn more about the Center’s work at https://www.closedlooppartners.com/the-center/
About the Composting Consortium
The Composting Consortium, managed by the Center for the Circular Economy at Closed Loop Partners, is a multi-year industry collaboration on a mission to build a world where organics are kept in circulation. The Consortium advances composting infrastructure and the recovery and processing of food-contact compostable packaging and food scraps in the U.S., to reduce food waste and mitigate climate impact. The Consortium brings together leading voices across the composting and compostable packaging value chain––from the world’s leading brands to best-in-class composters running the operations on the ground. Through in-market tests, deep research and industry-wide collaboration, the Consortium is laying the groundwork for a more robust, resilient composting system that can keep food waste and compostable packaging in circulation. For more information, please visit www.closedlooppartners.com/composting-consortium/
How Can U.S. Composting Scale? Composting Consortium Launches New Report and Platforms to Partner With Composters and Municipalities to Scale Organics Infrastructure Across the U.S.
August 07, 2024
Municipalities and composters play a critical role in developing robust composting infrastructure and collection programs that divert organics from landfill
NEW YORK, Aug. 7, 2024 — Today, the Composting Consortium, a collaboration managed by the Center for the Circular Economy at Closed Loop Partners, released a new blueprint to guide municipal leaders in zero waste, solid waste and sustainability in establishing and scaling composting infrastructure and organics management programs across the country. How Organics Diversion Can Help Achieve Zero Waste Goals: A Blueprint for Action, co-authored with Eco-Cycle, based in Boulder, Colorado, is an essential guide for municipalities seeking to develop food scraps collection programs and to work with composters to meet zero waste and climate goals. Alongside the release of the blueprint, the Consortium invites U.S. municipalities and composters to join two newly launched platforms that support municipalities and composters in scaling organics infrastructure.
Today, food waste in landfills is a major source of methane, a potent greenhouse gas that significantly contributes to climate change. Diverting food scraps and yard waste through municipal organics programs reduces methane emissions and provides environmental benefits such as improved soil health, water conservation, carbon sequestration, and support for local economies and ecosystems. To support this diversion, the U.S. composting industry is in an early stage of transformation. More composters are looking to accept and process more food waste; approximately 70% of composters who process food also accept and process some format of food-contact compostable packaging, with the understanding that accepting these materials helps bring in more food waste to their facilities. However, only 10% of U.S. households have access to organics recycling through drop-off and curbside organics collection programs, and only 4% of wasted food is sent to composters today.
“Since its launch in 2021, the Composting Consortium has been focused on moving the needle to change that statistic,” said Kate Daly, Managing Director and Head of the Center for the Circular Economy at Closed Loop Partners. “By creating this blueprint, we aim to equip municipal leaders with a basic ‘how-to’ manual to launch or scale successful organics programs that contribute to a zero-waste future, clean organics streams and a thriving composting industry.”
The blueprint, How Organics Diversion Can Help Achieve Zero Waste Goals, offers a clear and actionable framework, including:
- Policy and Program Expansion for Diverting Food Waste: This section does a deep dive into effective strategies for policy development. It explores methods to incentivize resident and business participation, while outlining pathways to maximize food waste diversion from landfills.
- Setting Up Programs and Infrastructure: This section provides a clear roadmap for establishing new organics programs. It details best practices for collection methods, explores various processing options (composting facilities, anaerobic digestion), and offers guidance on navigating the critical process of contracting with composters.
- Communication with Program Participants: Recognizing the importance of resident and business engagement, this section provides a comprehensive communications toolkit. It outlines strategies for educating participants on proper sorting techniques, maximizing program participation and fostering long-term program success.
To thoughtfully scale organics management, key stakeholders must collaborate. This helps ensure that composting programs and infrastructure are developed to meet the diverse needs of stakeholders across the organics value chain––from composters, to cities, residents, businesses and more. Alongside the release of the blueprint, the Composting Consortium is launching two new platforms to engage directly with municipalities and composters across the country to support the scale-up of robust composting infrastructure.
The Composting Consortium’s new Composter Innovator Program aims to bring composters across the U.S. to the table to play an active role in shaping the future of the composting industry on topics like contamination, policy and funding food waste composting infrastructure. The group will take on important questions, including identifying the cost of processing compostable packaging and offering recommendations on how to allocate Extended Producer Responsibility funds to support composting infrastructure development. The Consortium invites composters across the U.S. to sign up for the program and be involved in the growth of composting infrastructure across the U.S.
The Consortium is also launching its Municipal Partner Platform, a free-to-access platform for city officials focused on sustainability, zero waste and waste management. The platform connects officials with leaders nationwide to share and discuss best practices in starting and expanding organics collection and infrastructure programs. Municipalities of all sizes and stages of development are invited to reach out to the Composting Consortium to explore ways the network can help them achieve their goals of diverting food waste from landfills.
More information on the Composter Innovator Program and the Municipal Partner Platform can be found at www.closedlooppartners.com/composting-consortium/
About the Center for the Circular Economy at Closed Loop Partners
Closed Loop Partners is a firm at the forefront of building the circular economy. The company is comprised of three key business segments. Closed Loop Capital Management manages venture capital, buyout and catalytic private credit investment strategies on behalf of global corporations, financial institutions and family offices. Closed Loop Builders is an operating group that incubates, builds and scales circular economy infrastructure and services. The Center for the Circular Economy (‘the Center’) is the innovation arm of Closed Loop Partners. The Center executes research and analytics, unites organizations to tackle complex material challenges and implement systemic change that advances the circular economy. The Center’s expertise spans circularity across the full lifecycle of materials, connecting upstream innovation to downstream recovery infrastructure and end markets.
For more information, please visit www.closedlooppartners.com/the-center/
About the Composting Consortium
The Composting Consortium, managed by the Center for the Circular Economy at Closed Loop Partners, is a multi-year industry collaboration on a mission to build a world where organics are kept in circulation. The Consortium advances composting infrastructure and the recovery and processing of food-contact compostable packaging and food scraps in the U.S., to reduce food waste and mitigate climate impact.
The Consortium brings together leading voices across the composting and compostable packaging value chain––from the world’s leading brands to best-in-class composters running the operations on the ground. Through in-market tests, deep research and industry-wide collaboration, the Consortium is laying the groundwork for a more robust, resilient composting system that can keep food waste and compostable packaging in circulation.
For more information, please visit www.closedlooppartners.com/composting-consortium/
Does Compostable Packaging Actually Break Down? Composting Consortium Reveals Groundbreaking Findings from Largest Field Test in North America
April 16, 2024
Data in new report reveals that certified food-contact compostable packaging breaks down successfully at commercial composting facilities that meet reasonable operating parameters.
NEW YORK, April 16, 2024 /PRNewswire/ — Today, the Composting Consortium, an industry collaboration led by the Center for the Circular Economy at Closed Loop Partners, released a groundbreaking report that fills a critical data gap for the U.S. composting industry: how well does certified, food-contact compostable packaging actually break down in real-world composting facilities? The report, Breaking It Down: The Realities of Compostable Packaging Disintegration in Composting Systems, shares findings from an 18-month study––the largest known field test of certified, food-contact compostable packaging conducted in North America––revealing the realities of compostable plastic and fiber disintegration in diverse in-field composting conditions.
In total, the study tested over 23,000 units of certified food-contact compostable packaging within large-scale industrial composting environments. This encompassed 31 types of fiber packaging & products and compostable plastic packaging & products––such as PLA and PHA––across 10 diverse composting facilities across the U.S.
The data is released at a critical time, as compostable packaging grows as an alternative to conventional plastics amidst an urgent waste crisis. Roughly one-third of the world’s food is wasted each year––a loss estimated at $230 billion. Nearly 60% of the uncontrolled methane emissions from municipal landfills are caused by discarded food, highlighting its significant impact on the environment. To address the urgent food waste and climate challenge, demand for organics circularity is rising, and with it, the volume of food-contact compostable packaging––a market poised to grow 16% annually in the U.S. until 2032, 4x faster than traditional plastic packaging. Today, the U.S. composting industry is in an early stage of transformation to accept and process more food waste; approximately 70% of the composters who process food also accept and process some format of food-contact compostable packaging, with the understanding that accepting these materials helps bring in more food waste to their facilities.
For compostable packaging to reach its full potential as a circular packaging solution, disintegration at end-of-life is critical, in tandem with consistent labeling and design that differentiates compostable and non-compostable packaging further upstream, as well as policies that incentivize robust composting infrastructure to process these materials. In this new study, the Composting Consortium focuses on how compostable packaging breaks down. Previously, scant information was publicly available on the disintegration of compostable packaging, particularly on the compost environments in which they disintegrate.
This groundbreaking study found that overall, compostable packaging breaks down successfully at composting facilities that meet reasonable operational parameters (e.g., compost pile temperatures, moisture, oxygen, pH, etc., defined in The Composting Handbook). While the Consortium’s study did not assess disintegration with the intention to “pass” or “fail” any specific compostable packaging or product, notably, the average compostable plastic and fiber packaging in-field performance in this study met disintegration thresholds used by industry groups:
- Compostable plastic packaging and products broke down successfully across five composting methods, and all 10 facilities’ varying processing timeframes and operating conditions, achieving 98% disintegration on average by surface area, which exceeds industry thresholds to achieve a 90% or higher disintegration.
- Compostable fiber packaging and products achieved 83% disintegration on average by surface area, meeting industry thresholds to achieve an 80% or higher disintegration. Findings showed that certain operating conditions, like turning, agitation and consistent moisture levels above 50%, support increased disintegration of fiber packaging and products.
The findings point to the viability of certified food-contact compostable packaging as an alternative packaging solution to single-use conventional plastic packaging. It also highlights the importance of ensuring that these materials align with available recovery infrastructure, and the importance of expanding robust recovery pathways to divert compostable packaging, and the food scraps they carry, from landfill––that is at the core of the Composting Consortium’s mission.
The Composting Consortium, in collaboration with its brand and industry partners, the US Composting Council, the Compost Research and Education Foundation and other groups, will leverage these findings to help inform policymaking around compostable packaging, update best management practices for composting facilities and shape a field test standard for evaluating compostable packaging disintegration at composting facilities. Data from this study will be donated to the Compostable Field Testing Program (CFTP), which will later launch an open-source database on the disintegration of compostable packaging. Additionally, ASTM International is currently developing an in-field test method for assessing disintegration of compostable items at composting facilities, and the data from this study will be used to inform the draft field testing method. As the Consortium moves into its next phase of work, the results of this study will shape its engagement and education efforts with composters, municipalities, regulators, brands and packaging manufacturers.
“Field testing for disintegration has been ongoing for three decades, and the Composting Consortium’s work across the value chain has significantly advanced insights for the industry,” says Diane Hazard, Executive Director of the Compost Research and Education Foundation. “The collaborative approach and open-source data from this project both advances field testing methods and equips compost manufacturers and brands with the knowledge to better understand the variability of disintegration across different systems, all major steps towards successfully processing compostable packaging.”
“Brands and manufacturers must prioritize material selection and design and labeling for compostable packaging to achieve optimal performance in composting environments, which can then incentivize composters to accept food-contact compostable packaging materials at their facilities,” says Frank Franciosi, Executive Director of the US Composting Council, an industry partner of the Composting Consortium. “As feedstock for composters becomes diversified and more complex, it’s important for all entities within the supply chain to support consumer education on source separation of organics and reevaluate best management practices to support those composters who choose to accept compostable packaging, and this study is another tool for our industry to be able to start that process.”
“Alongside design and reduction as well as reuse and recycling, composting is an important solution for waste mitigation. Through this research, the Composting Consortium sheds light on what is needed for compostable packaging to have the greatest positive impact. Informed by this robust data, we can together ensure the responsible growth of compostable packaging and composting infrastructure, and drive toward circular outcomes, including increased diversion of food scraps and compostable packaging from landfills,” says Kate Daly, Managing Director and Head of the Center for the Circular Economy at Closed Loop Partners.
The study brought together the Consortium’s corporate brand partners, including PepsiCo, the NextGen Consortium, Colgate-Palmolive, Community Impact at Danaher, Eastman, The Kraft Heinz Company, Mars, Incorporated and Target Corporation; technical partners including the US Composting Council, Resource Recycling Systems (RRS), the Compostable Field Testing Program (CFTP) and the Biodegradable Products Institute (BPI); and a cohort of compost partners including Atlas Organics, Napa Recycling & Waste Services, Specialized Environmental Technologies, Windham Solid Waste Management, Black Earth Compost, Ag Choice Organics Recycling, Happy Trash Can Compost, Veteran Compost and Dayton Foodbank. Advisory partners include 5 Gyres, Foodservice Packaging Institute (FPI), ReFED, the Compost Research and Education Foundation (CREF), the Sustainable Packaging Coalition (SPC), Compost Manufacturing Alliance (CMA), Eco-Cycle, University College London (UCL), Western Michigan University (WMU), University of Wisconsin-Stevens Point and World Wildlife Fund (WWF).
About the Composting Consortium
The Composting Consortium is a multi-year collaboration to pilot industry-wide solutions and build a roadmap for investment in technologies and infrastructure that enable the recovery of compostable food packaging and food scraps. The Composting Consortium is managed by Closed Loop Partners’ Center for the Circular Economy. Learn more about the Consortium at closedlooppartners.com/composting-consortium/
About the Center for the Circular Economy at Closed Loop Partners
The Center for the Circular Economy is the innovation arm of Closed Loop Partners, a firm at the forefront of building the circular economy. The Center executes research and analytics, unites organizations to tackle complex material challenges and implements systemic change that advances the circular economy. The Center for the Circular Economy’s expertise spans circularity across the full lifecycle of materials, connecting upstream innovation to downstream recovery infrastructure and end markets. Learn more about the Center for the Circular Economy at closedlooppartners.com/the-center/
First-of-Its-Kind Study by the Composting Consortium Analyzes Contamination Rates Across U.S. Composting Facilities
February 28, 2024
Commonly held assumptions about contamination were put to the test, revealing new data on the realities of contamination at composting facilities.
February 28, 2024, New York, NY — Today, the Composting Consortium, an industry collaboration led by the Center for the Circular Economy at Closed Loop Partners, released an unprecedented report on compost contamination, Don’t Spoil the Soil: The Challenge of Contamination at Composting Sites. The report reveals first-of-its-kind data on the amount of contamination at U.S. composting facilities, and the significant cost to manage it. Working with composters across the U.S., the Consortium’s in-field study quantifies contamination rates in feedstock and finished compost, highlighting a need for policy, innovation and packaging design to help composters improve contamination mitigation and strengthen organics recovery processes.
The report is released at a critical time for the composting industry, as pressure increases around the growing food waste crisis in the U.S. Today, nearly 40% of food is wasted and sent to landfill in the U.S.––at a loss of $430 billion––and only about 4% of all post-consumer food waste generated by Americans is sent to composters. Organics collection and infrastructure is one key solution to the crisis. To meet growing demand, the U.S. composting industry is shifting. While most composting facilities in the U.S. still only process yard trimmings, curbside organics collection has surged by 49% since 2021. Composter feedstock acceptance policies are also slowly shifting to match demand, with approximately 145 full-scale compost facilities in the U.S. now accepting food waste and some forms of food-contact compostable packaging—that packaging can be a key vessel for diverting food waste to compost, if recovered at composting facilities.
There is eagerness among compost manufacturers to be a part of the food waste solution, but concerns about contamination risks in the organics stream continue to be the one of biggest barriers to greater acceptance of food waste and food-contact compostable packaging. Concerns are increasing amidst the growing volume of compostable packaging in the U.S., largely due to look-alike, non-compostable packaging inadvertently entering the composting stream due to unclear labeling and confusion among consumers. This creates operational and financial challenges for haulers and composters, hindering further acceptance of food waste across the country.
Before the Composting Consortium released this report, there was little to no publicly available data on the amount and types of contamination in feedstock or finished compost products, or the time and money spent by composters to manage contamination at their facilities. To support the composting industry in its transition to accept food waste and food-contact compostable packaging, the Composting Consortium set out to address this data gap by conducting a first-of-its-kind study with 10 leading composters of varying sizes across the continental U.S., capturing a geographically and operationally diverse dataset on contamination volumes and decontamination practices.
The study measures and characterizes contamination across different points of the composters’ processes––and analyzes the financial cost to composters to handle contamination. The study examines five commonly held assumptions about contamination and compostable packaging, and breaks down in-field realities in a data-backed and easy-to-follow format. Key findings include:
- Conventional plastic is the most common contaminant received by composters, making up an average of 85% of the contamination that composters receive, by volume;
- Despite diligent efforts to combat contamination, conventional plastic can persist in the finished compost; 4 out of 10 composters in the study had trace amounts of conventional flexible plastic in their finished compost;
- Contamination has a significant impact on the bottom line; on average, 21% of composter operating costs are spent on contamination removal;
- Most composters had contamination, irrespective of whether or not they accept compostable packaging; several factors contribute to the levels of contamination that a facility receives;
- Eight out of nine composters who accept compostable products in the study had no detectable amounts of compostable packaging in their finished compost.
The data confirms the pervasiveness of plastic contamination, and the need to further mitigate this challenge, both upstream and downstream in the composting value chain. It also highlights that more consistent and standardized compostable packaging design and labeling is needed to ensure that certified, food-contact packaging is properly sorted and recovered at end of life. In the same vein, non-compostable packaging should be distinct in its design and labeling to reduce the risk of conventional plastic packaging making its way into the organics stream. Composters must be supported and incentivized to accept food and certified food-contact compostable packaging, to ensure these materials drive value and circular outcomes to the composting industry.
“Addressing contamination is critical to paving the way for broader organics recovery as a key solution to the food waste crisis in the U.S.,” says Kate Daly, Managing Director of the Center for the Circular Economy at Closed Loop Partners. “The Composting Consortium’s findings shed light on the significant opportunities––and challenging realities––of composting in the U.S. today. This study lays the groundwork for future research and investment to scale end-of-life solutions for food and food-contact compostable packaging to drive circular outcomes.”
This study is an important snapshot of a pervasive challenge that affects the compost industry. This work represents the Composting Consortium’s continued efforts to break siloes and bring together the key stakeholders––upstream, midstream and downstream––to remove barriers and advance a circular economy for organics and compostable packaging. Addressing contamination requires enhancing transparency, intensifying educational efforts and championing innovation. Additional research and collaboration across the entire composting and compostable packaging ecosystem can help pave the way for a circular future, turning food waste into a valuable resource and relieving composters from the burden of contamination.
About the Composting Consortium
The Composting Consortium is a multi-year collaboration to pilot industry-wide solutions and build a roadmap for investment in technologies and infrastructure that enable the recovery of compostable food packaging and food scraps. The Composting Consortium is managed by Closed Loop Partners’ Center for the Circular Economy. PepsiCo and the NextGen Consortium are founding partners of the Consortium. Colgate-Palmolive; Community Impact at Danaher; Eastman; The Kraft Heinz Company; Mars, Incorporated; and Target Corporation joined as supporting partners, and the Biodegradable Products Institute, the US Composting Council and the U.S. Plastics Pact joined as industry partners. Our compost partners for the Contamination Pilot include Ag Choice, Atlas Organics, Black Earth Compost, Dirt Hugger, The Food Bank at Dayton, Happy Trash Can Compost, Napa Recycling, Specialized Environmental Technologies (SET), Veteran Compost, and Windham Solid Waste Management District. Our advisory partners include 5 Gyres, Foodservice Packaging Institute (FPI), ReFED, Compost Research and Education Foundation (CREF), the Sustainable Packaging Coalition (SPC), Compost Manufacturers Alliance (CMA), Eco-Cycle, University College London (UCL), Western Michigan University (WMU), University of Wisconsin-Stevens Point and World Wildlife Fund (WWF). Learn more about the Consortium at closedlooppartners.com/composting-consortium/
About the Center for the Circular Economy at Closed Loop Partners
The Center for the Circular Economy (‘the Center’) is the innovation arm of Closed Loop Partners, a leading circular economy-focused investment firm in the U.S. The Center executes research and analytics, unites organizations to tackle complex material challenges and implement systemic change that advances the circular economy. The Center for the Circular Economy’s expertise spans circularity across the full lifecycle of materials, connecting upstream innovation to downstream recovery infrastructure and end markets.
Many Americans Don’t Understand What to Do with Compostable Packaging. Here’s a Solution.
February 20, 2024
As countries and corporations get one year closer to their own deadlines for meeting major climate targets, there are some important pathways to emissions reduction that cannot be ignored. Food waste mitigation is one of them.
Roughly one-third of the world’s food is wasted each year––a loss estimated at $230 billion. Nearly 60% of the uncontrolled methane emissions from municipal landfills are caused by discarded food, highlighting its significant impact on the environment. To address the urgent food waste and climate challenge, demand for organics circularity is rising, and with it, the volume of food-contact compostable packaging––a market poised to grow 16% annually in the U.S. until 2032, 4x faster than traditional plastic packaging.
Certified, food-contact compostable packaging can enable the diversion of food waste from landfill and support a circular economy. If food packaging filled with food scraps is properly recovered and sent to composting facilities, then this food wouldn’t end up emitting greenhouse gases in landfills. The food and packaging would also be converted into nutrient-rich compost. But if certified compostable packaging is not appropriately collected and processed into compost after it’s used, more waste is created.
We often hear that there is a lack of recovery infrastructure for compostable materials. The reality is, U.S. composting infrastructure is in the middle of transitioning from processing just yard waste to accepting more types of inputs, including post-consumer food waste and food-contact compostable packaging. Today, 70% of the 200 full-scale composting facilities that process food waste already accept and process some forms of compostable packaging. Plus, 15 million Americans have access to organics collection, a dramatic 49% increase in access since BioCycle’s last survey in 2021.
For food-contact compostable packaging to be successful in the market today, labeling and design need to be aligned so that consumers throw packaging in the right bin, and composters can easily process these materials. Yet, data shows that some labels confuse consumers, who mistake packaging as compostable when it’s not, or misunderstand where to dispose of that packaging at the end of its use.
Without policies that drive clear, standardized labels and instructions on where compostable packaging needs to go after it’s used, a lot of it ends up in landfills or contaminating recycling streams. Conversely, non-compostable look-alike products and packaging can make their way to compost facilities where they end up contaminating the soil. These look-alikes are the primary contamination challenge in the organics stream.
To address this challenge, the Composting Consortium, led by the Center for the Circular Economy at Closed Loop Partners, and the Biodegradable Products Institute (BPI) embarked on a joint study to test different packaging label and design approaches, and how these inform consumers’ assumptions on what to do with compostable packaging after it’s been used. The findings can inform policies that better support labeling practices and standards for both compostable and non-compostable packaging. In the U.S. today, five states have compostable packaging labeling laws, including Washington, California, Colorado, Minnesota and Maryland. Other states, like Virginia and New Jersey, recently introduced laws that would establish recycling labeling requirements.
Until this study, this information on American consumers had not been publicly available. The Composting Consortium and BPI released the findings in a first-of-its-kind industry report. Here’s a snapshot of what the data reveals:
- Nearly 1/3 of respondents say they would place compostable packaging in the recycling bin
Compostable packaging is not designed to be recycled at a material recovery facility (MRF) and can contaminate the recycling stream if intermixed with fossil fuel-based plastics. Compostable packaging that mistakenly ends up in recycling streams loses a significant portion of its value and creates a contamination challenge that impedes the recovery of valuable recyclable materials. Cross-contamination of the recycling and composting streams is an expensive operational challenge and would pose significant risk to both industries. Brands that have set ambitious sustainable packaging goals are also impacted by inadequate collection and processing of these materials.
Our recommendation: Brands and municipalities should work together on educational campaigns and clear, on-pack messaging.
- Up to 50% of respondents say they would place packaging labeled as “made from plants” in the composting bin
“Made from plants” describes the materials used to make the packaging, not where the package should go at the end of its use. In fact, “made from plants” claims are commonly found on plastic packaging that should be recycled (i.e. PET made from ethanol derived from corn). Our study found that American consumers are especially confused by products and packaging that are not actually compostable yet have green or natural coloring, green tinting, or make claims such as “made from plants” without any context or disclaimer language. These plastic, non-compostable materials are virtually indistinguishable from their compostable counterparts.
Our recommendation: Brands and policymakers should support labeling policies that standardize clear, consistent consumer communications, design and labeling.
Source: Alamy
- Adding a trusted certification logo and larger “compostable” call out increases consumers’ ability to identify packaging as compostable by up to 22%
Our study finds that using at least two to three design elements that call out compostability on food-contact compostable packaging, such as the BPI certification mark, the intentional use of tinting and coloring, and a more prominent “compostable” call out, is most effective for consumer understanding.
Our recommendation: Brands and manufacturers should refer to the Composting Consortium’s latest report and BPI’s Industry Labeling Guidelines for specific examples of packaging design strategies that improve consumer identification, increase recovery of compostable materials and mitigate contamination at facilities.
Coming this month: A new report from the Composting Consortium on contamination rates at different composting facilities! Sign up for a webinar to learn about our findings here!
Without standardized labeling, misleading designs and claims will continue to cause consumer confusion. This research provides insights to brands, manufacturers, consumers, policymakers, municipalities, composters and other stakeholders on effective design and labeling techniques that could improve the diversion of food-contact compostable packaging to the right material stream. While these new findings shed light on the issue, this is just the beginning. As the composting space rapidly evolves, complementary studies will be critical to advancing the recovery of compostable packaging––a critical path to reducing food waste and greenhouse gas emissions.
Learn more about these findings in the latest report from the Composting Consortium and BPI here: https://www.closedlooppartners.com/research/us-consumer-perception-of-compostable-packaging/.