Is the controlled aerobic, or oxygen requiring, decomposition of organic materials by microorganisms, under controlled conditions. It reduces the volume and mass of the raw materials while transforming them into CO2, water and a valuable soil conditioner – compost. When talking about composting of bioplastics, foremost industrial composting in a managed composting facility is meant (criteria defined in EN 13432).

The main difference between industrial and home composting is that in industrial composting facilities temperatures are much higher and kept stable, whereas in the composting pile temperatures are usually lower, and less constant depending on factors such as weather conditions. Home composting is a way slower paced process than industrial composting. Also, a comparatively smaller volume of waste is involved.