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Abstract

Biogas is one of the byproducts of anaerobic digestion that results from the breakdown of organic material, including waste and agro-industrial effluents. This chapter emphasizes its vital role in renewable energy and the circular economy enhancing by reintroducing energy and elements into production cycles, thus saving energy and natural resources. It discusses the biogas formation mechanism, substrate types, and yields. With a methane content typically between 40% and 70%, biogas has a great potential for energy use. Codigestion improves methane yield, offering eco-friendly waste treatment. Research on additives such as charcoal and mechanisms such as direct interspecies electron transfer (DIET) and zero-valent iron (ZVI) allows for the enhancement of biogas production. Purification enhances calorific value, improving energy use. The chapter also examines geographic information system (GIS) subsidies for technical-economic biogas/biomethane potential assessments, considering transportation costs. Hydrogen obtainment from biogas could support the energy transition. Lastly, life cycle assessment (LCA) studies evaluate ecological impacts and greenhouse gas (GHG) emissions of the biogas life cycle. This comprehensive exploration aims to enlighten readers on the multifaceted aspects of biogas in the context of the energy transition, vital for sustainability amidst climate change.

Published in

Title: From Crops and Wastes to Bioenergy : Current Status and Challenges
Publisher: Elsevier

SLU Authors

UKÄ Subject classification

Energy Systems
Bioenergy

Publication identifier

  • DOI: https://doi.org/10.1016/B978-0-443-16084-4.00004-3
  • ISBN: 978-0-443-16084-4
  • eISBN: 978-0-443-16085-1

Permanent link to this page (URI)

https://res.slu.se/id/publ/141486