composting – What is the difference between biodegradable and compostable plastic? – GWC Mag

Biodegradable and compostable plastics are both designed to break down over time, but they differ in how they decompose and the environmental impact of their breakdown process.

Biodegradable plastics break down through natural processes into smaller molecules, eventually returning to nature. However, the breakdown process may leave behind residues or microplastics that can persist in the environment and cause harm.

Compostable plastics, on the other hand, not only break down into smaller components but also undergo a specific process called composting. During composting, organic materials decompose aerobically, producing nutrient-rich compost that can be used to enrich soil. Compostable plastics fully degrade into natural elements, leaving no harmful residues behind.

Compostable plastics are typically made from renewable resources like plant-based materials and are certified to meet specific compostability standards. They provide a more sustainable alternative to traditional plastics because they reduce the amount of waste sent to landfills and contribute to the production of valuable compost that improves soil health.

In summary, while both biodegradable and compostable plastics break down over time, compostable plastics undergo a more controlled decomposition process and result in the production of beneficial compost. Therefore, compostable plastics offer a superior environmental solution for reducing plastic waste and promoting sustainability.