Kaiwen Liang

Agri-Products Application Center, Hainan Institute of Tropical Agricultural Resouces, Sanya, 572025, Hainan, China
Author    Correspondence author
Journal of Energy Bioscience, 2024, Vol. 15, No. 2   doi: 10.5376/jeb.2024.15.0012
Received: 22 Feb., 2024    Accepted: 30 Mar., 2024    Published: 14 Apr., 2024

This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Liang K.W., 2024, Enhancing the efficiency of converting agricultural waste into biomethane using anaerobic digestion technology, Journal of Energy Bioscience, 15(2): 118-131 (doi: 10.5376/jeb.2024.15.0012)

This study’s focus is on integrating various innovative techniques and process optimizations to improve biomethane yield and overall system performance. The study highlights several key advancements in anaerobic digestion technology. Integrating pyrolysis with anaerobic digestion has shown a significant increase in biomethane production, achieving an overall efficiency of 67% compared to 52% for stand-alone systems. The use of biochar as an additive has been found to enhance hydrolysis, acidogenesis, and methanogenesis, thereby stabilizing the microbial community and increasing methane yield. Co-digestion of food waste with other substrates has also been identified as an effective method to boost biogas production, with yields ranging from 0.272 to 0.859 m³ CH₄/kg VS. Additionally, emerging technologies such as membrane separation and chemical looping for biogas upgrading have been discussed, showing potential for further enhancing biomethane quality and production rates. The integration of advanced techniques such as pyrolysis, biochar addition, and co-digestion, along with innovative biogas upgrading methods, significantly enhances the efficiency of converting agricultural waste into biomethane. These advancements not only improve biomethane yield but also contribute to the sustainability and economic viability of anaerobic digestion technology.

Anaerobic digestion; Biomethane; Agricultural waste; Pyrolysis; Biochar