What is the difference between biodegradable and copostable?
Biodegradable materials can be decomposed into very small parts, due to biological activity and chemical alteration of the material structure. By contrast, materials that totally decompose when exposed to certain conditions, leaving no visible or toxic residuals, are defined as compostable.
An oak twig, for example, is not compostable, because it decomposes too slowly. In other words, composting is the entire biodegradation process.
The time it takes for a material to biodegrade is closely linked to factors like temperature, humidity, oxygenation and concentration of microorganisms encountered by the substance during the process. The ability to artificially control such parameters, for example by constantly monitoring them, enables us to improve the biodegradation performance in terms of decomposition speed.
This is the compostability process, so the possibility to increase the speed of biodegradation under controlled conditions.