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Oxo-biodegradable plastics, made from a by-product of oil-refining, which degrade in the environment by a process of oxidation initiated by an additive, and then biodegrade after their molecular weight has reduced to the point where naturally-occurring micro-organisms can access the material. Hydro-biodegradable is much more expensive than oxo-biodegradable.(product show case) |
Hydro-biodegradable plastics, made wholly or partly from crops, which biodegrade in a highly microbial environment, such as composting.In the case of oxo-biodegradable and hydro-biodegradable, degradation begins with an abiotic process (oxidation and hydrolysis respectively), followed by a biological process. Both types emit CO2 as they degrade, but hydro-biodegradable can also emit methane. Both types are compostable6, but only oxo-biodegradable can be economically recycled. |
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