Advantages and Disadvantages
Under proper conditions biodegradable plastics can degrade to the point where microorganisms can completely metabolise them to carbon dioxide (and water). For example, starch-based bioplastics produced from sustainable farming methods could be almost carbon neutral (although widespread adoption might result in higher food prices).
There are concerns that "Oxo Biodegradable (OBD)" plastic bags may release metals, and may require a great deal of time to degrade in certain circumstances. Furthermore, OBD plastics may produce tiny fragments of plastic that do not continue to degrade at any appreciable rate regardless of the environment.
Read more about this topic: Biodegradable Plastics
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