Biogas

In evaluating national development and the standard of living of any nation, the supply and consumption of energy are significant. Human energy consumption has been moderate before the industrial revolution in 1890s. Man has mostly relied on the energy from brute animal's strength to do work. Recently, humans acquired control over coal, electricity, crude oil, natural gas, etc. Sustainable resource management of waste and the development of alternative energy source are the present challenges due to economic growth. The history of waste utilization shows independent developments in various developing and industrialized countries/Solid and liquid wastes including soluble and biodegradable organic materials create serious environmental problems when disposed to the environment in an uncontrolled manner but they can be valued as an energy source if decomposed in a controlled anaerobic chamber.The review paper encompasses the several trends and features of biogas.