ABSTRACT
This chapter reviews the scenario of Indian biogas generation, policies, and problems faced. Anaerobic digestion assists in killing disease-causing pathogens. In anaerobic digestion, microorganisms digest organic materials in the absence of oxygen, airtight condition, and at a certain level of moisture, temperature, and pH. In acetogenesis, breakdown of short-chained, alcohols, aromatic fatty acids, and higher Volatile fatty acids to acetate and H2 occurs. As anaerobic digestion process uses facultative anaerobes for the decomposition of organic matter, environmental conditions and nutrient availability play important roles in the biogas production. In food processing industries such as fruits, dairy, vegetables, sugar, meat or oil processing, a large amount of waste is generated in both solid and liquid forms. Paper waste is considered as a good feedstock for biogas production; therefore, it can be utilized as a source of cheaper energy generation and waste management.
