Biogas is a renewable energy resource that can be an alternative solution for the world's insatiable energy demands while helping in managing waste and reducing the greenhouse gas (GHG) emissions. It is also regarded as carbon neutral as the carbon in biogas comes from organic matter (feedstock) that captured this carbon from atmospheric CO2 over a relatively short timescale.

This book has been written and compiled to collate latest information on biogas technology to help readers, researchers and extension workers alike to understand the fruitful exploitation of the process. It has fourteen chapters, primarily in three major categories: 01. the first category dealing with the basic biomethanation process including its ecology, microbiology, biochemistry and molecular biology. 02. the second category dealing with the evolution of the technology in Indian/global scenario from the lab to the land 03. the last category is dealing with the economics of the technology. All the various known and active names in this field of research and development have put their hearts and minds into their contributed chapters.

The additional details provided in the Annexures (viz., Model bankable scheme for biogas commercialisation venture; Frequently asked questions in adopting biogas technology; Common terminologies in biogas research; Glossary of abbreviations and symbols frequently used in biogas research; and Prominent global entities in biogas R&D and commercialisation) double the usefulness of the compilation.

Snehasish Mishra, Associate Professor, PhD (Life Sciences), of the School of Biotechnology, KIIT Deemed University has research exposure in the areas of microbiology, biotechnology, limnology, environmental biotechnology, renewable energy, bioprocess engineering and food sciences.

Tapan K Adhya, Professor, School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT) Deemed University, Bhubaneswar - 751024, also is the Director, South Asia Nitrogen Centre, New Delhi.

Sanjay K Ojha completed his PhD in Biotechnology from KIIT University, Bhubaneswar before doing his postdoctoral research at the Department of Biophysics, AIIMS, New Delhi. Currently, he is a Research Scientist in Pandorum Technologies Pvt Ltd., collaborating with LV Prasad Eye Institute, Hyderabad

1. Methanogenesis: Microbiology and Ecology 2. Biochemistry and Molecular Biology of Biomethanation 3. Methane Driven Biogeochemical Processes in Terrestrial Ecosystem  4. Bioenergetics and Evolutionary Relationship in Biomethanation with Respect to MCR  5. Application of Methanation as an Alternate Energy Technology 6. Biogas Generation from Kitchen Wastes and its Purification Technology 7. Biomethanation of Rice Straw-Feasibility Assessment  8. Biogas Production from Dairy Effluents  9. Valorization of Pineapple Wastes for Biomethane Generation  10. Optimised Process Considerations for Enhanced Kitchen Refuse Biomethanation 11. Electrofermentation in Aid of Bioenergy and its Industrial Application  12. Industrial Applications of Anaerobic Digestion 13. Biomethanation under Biphasic Conditions: Success Story of Nisargruna Biogas Plant 14. Improved Biogas Plants and Related Technologies A Status Report  15. Socioeconomic Analyses of Biogas Technology Towards the Upliftment of Rural India