Renewable Energy - Biomass
countries burn 400 million tonnes of animal dung each year.
If this had been used to fertilize the soil instead, an extra
20 million tonnes of grain could have been produced.
Increasingly in industrial countries, industrial waste and
crops grown specifically as energy crops represent growing
biomass sources. The concept includes municipal solid waste
that contains a large organic fraction of domestic waste.
Environment Protection Act of 1990 established emissions limits;
waste gases from incineration have to be cleaned before discharge.This
involves cooling the gases therefore heat recovery for reuse
has become an integral part of burning waste.
South East London Combined Heat & Power Project (SELCHP) was
constructed in 1994 and burns approximately 420,000 tonnes
of municipal waste generating 165 GWh of electricity per year.
In Europe set-aside land is increasingly being used for biomass
crops including managed woodland coppicing. traditional use
of biomass declined sharply in developed countries during
the industrialisation process due to the switching to fossil
fuels (coal and oil).
Large scale use of biomass is now taking place because of
non-renewable resource availability, energy security and environmental
© ep@w Publishing Company Ltd. 2000