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Biomass is any matter, living or once living that can be harnessed or further processed to generate fuels such as:
Methane is produced during anaerobic digestion and can be harnessed as a fuel. Methane is also a greenhouse gas Methane is generated from municipal landfills, composting of food waste, agricultural waste, poultry and dairy waste, as well as sewage.
As in the process above for the production of methane, hydrogen, a very 'clean' fuel can be generated by microorganisms such as special algae, or othe organisms under specific conditions.
Biofuels include bio-diesel, ethanol, methanol which are also produced by microbial fermentation of waste materials such as agricultural waste. Green electiricity can be generated by microbial processes such as those mentioned above (Biomass) as well as by incineration of municipal wastes in incineration plants retrofitted with systems to capture the heat generated, in order to generate steam which in turn can drive steam turbines that generate electricity. [Link to horticultural waste cogeneration Plant in Singapore] [Food waste composting plant for Singapore] In Asia, 500 million tonnes of municipal solid wastes are generated every year. About 92% of Singapore's municipal solid wastes are incinerated and used to generate electricity. |
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