Biodegradable waste
From Wikipedia, the free encyclopedia
Biodegradable waste is a type of waste which comprises of waste streams that are available for biodegradation. These wastes typically originate from plants, animals and other living organisms.
It can be commonly found in municipal solid waste (sometimes called biodegradable municipal waste [BMW]):
Other biodegradable wastes include:
[edit] Uses of biodegradable waste
Biodegradable waste is a little recognised resource. Through correct waste management the two key processes of anaerobic digestion and composting, it can be converted into valuable products.
Anaerobic digestion converts biodegradable waste into:
- Biogas which can be used to generate renewable energy or heat for local heating
- Soil improver (digestate)
Composting converts biodegradable waste into:
[edit] Biodegradable waste and global warming
Biodegradable waste is an important substance due to its links with global warming. When it is disposed of in landfill it breaks down under uncontrolled anaerobic conditions. This produces landfill gas which if not harnessed escapes into the atmosphere. Landfill gas contains methane which is a potent greenhouse gas stronger than carbon dioxide.
The European Union Landfill Directive puts key requirements on member states for the management of biodegradable waste in order to prevent global warming.
[edit] See also
- Animal By-Products Regulations UK biodegradable waste legislation
- Biodegradation
- Climate change
- Landfill Allowance Trading Scheme
