According to the world's energy scenario,
it is widely accepted that fossil fuel depletion, fuel
increasing price, global warming including other
environmental problems are becoming critical
issues. Hence, alternative energy sources are
expected to substitute fossil fuel in the future.
Among these energy sources, biomass is the only
carbon-based renewable energy and the wide
variety of biomass enables it to be utilized by
most people around the world. It accounts for
approximately 14 % of total energy consumption in
the world [1].