Biofuel Extraction Techniques

5An Overview on Established and Emerging Biogas Upgradation Systems for Improving Biomethane Quality

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

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

Abstract

Biogas polishing succeeding its production has become a mandate to achieve fuel quality equivalent to conventional fuels. Various physical and chemical biogas upgradation systems have been developed over the past few decades and are available commercially. However, the available technologies have their limitations with respect to the resource, costs, and energy requirements. Recently, newer methane enrichment technologies based on biological processes have emerged. The research development over these techniques has flourished because of their cost-effectiveness and energy-efficient characteristics. Thus, the biological biogas upgradation systems are expected to be developed soon, which is still under laboratory investigation. This chapter focuses on the principles of upgradation of biogas by applying the trending microbial methane enrichment, bio-electrochemical, and algal-based photosynthetic upgradation systems.

Keywords: Biological biogas upgradation, bioelectrochemical systems, microbial methane enrichment, photosynthetic biogas upgradation

5.1 Introduction

Anaerobic degradation of organic materials has become a boon to humanity, producing biogas. ...