Biogas: Production of Biogas, Composition of Biogas, Octane rating of Biogas, Application of Biogas and Drawback of Biogas

Biogas

-Produced by the anaerobic decomposition of organic materials such as cow dung and other waste such as cornhusks, leaves, straw, garbage, flesh of car cusses, poultry droppings, pig dung, human excreta, sewage and the plants specially grown for this purpose like water hyacinth, algae, certain types of grasses. Also any cellulosic organic material of animal or plant origin which is easily bio-degradable is a potential raw material for biogas production. -Also produced by pyrolysis and hydrogasification methods

-Contains a mixture of methane (50-60% vol), CO2 (30-45%), hydrogen (5-10%), nitrogen (0.5-7%) and small traces of other gases such as hydrogen sulphide and oxygen

-It is a clean, but slow burning gas and having value between 5000 to 5500 kcal/kg or 38131 kJ/m3

-The octane rating of biogas is 130 and ignition temperature is 650 ยฐC

-Can be used to operate both compression ignition (diesel) and spark ignition (petrol) engines. CI engines can operate on dual-fuel (biogas+diesel) operation and pilot injection operation in which small quantity of diesel is required for igniting the mixture of air and biogas

-80% saving of diesel oil can be achieved

-Drawback of biogas is present of CO2. The engine performance can be improved by reducing the CO2 content in biogas.

Biogas, Production of Biogas, Composition of Biogas, Octane rating of Biogas, Application of Biogas and Drawback of Biogas
Biogas: Production of Biogas



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