Most 'compostable' bioplastics are anything but, says new report

A new report from Beyond Plastics highlights significant concerns regarding bioplastics labeled as "compostable." The report asserts that most of these bioplastics can only decompose in commercial composting facilities, which are often reluctant to accept them due to fears of microplastic and chemical contamination. The lack of federal standards in the U.S. means that bioplastic certifications are largely voluntary and influenced by the very industries they aim to regulate. The report indicates that bioplastics may take longer to break down than advertised and can leave behind toxic micro- and nanoplastics that pose risks to ecosystems and human health. Furthermore, many consumers are misled into believing that compostable products can be disposed of in home compost bins, which is often not the case. The report also raises alarms about the potential for compost containing bioplastics to harbor harmful chemicals, including PFAS, which can accumulate in the food chain. The bioplastics industry disputes these findings, claiming that contamination primarily arises from conventional plastics. The report calls for clearer standards and better consumer education, urging policymakers to promote reuse systems and responsible production practices instead of relying on bioplastics as a solution to plastic pollution.

- Most bioplastics labeled as compostable cannot be composted in home systems.

- There are no federal standards for bioplastic compostability in the U.S.

- Bioplastics can leave behind toxic microplastics and harmful chemicals.

- The bioplastics industry claims contamination is mainly from conventional plastics.

- The report advocates for clearer standards and a shift towards reusable systems.