Biofuel Extraction Techniques

4Role of Additives on Anaerobic Digestion, Biomethane Generation, and Stabilization of Process Parameters

Adya Isha^*, Bhaskar Jha, Tinku Casper D’ Silva, Subodh Kumar, Sameer Ahmed Khan, Dushyant Kumar, Ram Chandra and Virendra Kumar Vijay

Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi, India

Abstract

Anaerobic digestion (AD) is a globally accepted and adopted technology for the conversion of organic material into green fuel. However, the lack of system process stability, lower biomethane generation, and digester efficiency are some of the major setbacks for the biochemical processes involved in the AD process. In recent years, there has been a lot of curiosity shown by researchers focussed on tackling these challenges through various strategies. Among them, the introduction of enhancing additives in the AD process has received broader research attention. The enhancing additives (metallic, biological, carbon, and alkali-based) with their abundant rejuvenating properties are reported to easily fix the associated issues within the AD process. The metallic additives improved the microbial synergy and interspecies electron transfer that improved the process and biomethane production. Bioaugmentation through biological additives includes different enzymes and microbial consortium, boosting the weakened microbial activity under stressed environments. The enhancing carriers based on carbon, clay, and other natural materials are also known ...