Circular Biohydrogen Systems: Hybrid Biological Strategies in Dark Fermentation

DOI

10.2991/978-94-6463-922-3_9How to use a DOI?

Keywords

Biohydrogen; Dark Fermentation; Hybrid Biological Systems

Abstract

Dark fermentation is an emerging biological route for clean hydrogen production using organic waste substrates. Its advantages include operational simplicity, low energy input, and wide substrate compatibility, making it a promising option for decentralized renewable energy systems. However, the process is limited by incomplete substrate conversion, with a significant portion of organic carbon remaining as volatile fatty acids and other intermediates, resulting in lower hydrogen yields. To overcome this limitation, the integration of dark fermentation with complementary biological processes has gained increasing attention. These hybrid systems enable the sequential utilization of residual organics, improving energy recovery, enhancing hydrogen production, and broadening the range of value-added products derived from biomass. This review examines several integrated approaches, comparing their performance in terms of hydrogen yield, energy conversion efficiency, substrate flexibility, and practical implementation. A comparative overview highlights the benefits and trade-offs of each strategy, offering insights into their feasibility within circular bioeconomy frameworks. The paper emphasizes the role of hybrid biological systems in advancing sustainable waste-to-energy technologies and contributing to the global transition toward environmentally sound and resource-efficient hydrogen production systems.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Download article (PDF)

TY  - CONF
AU  - J. Dileeplal
AU  - M. Saritha
PY  - 2025
DA  - 2025/12/25
TI  - Circular Biohydrogen Systems: Hybrid Biological Strategies in Dark Fermentation
BT  - Proceedings of the International Conference Recent Advances in Materials, Processes and Technology for Sustainability (RAMPTS 2025)
PB  - Atlantis Press
SP  - 137
EP  - 149
SN  - 2590-3217
UR  - https://doi.org/10.2991/978-94-6463-922-3_9
DO  - 10.2991/978-94-6463-922-3_9
ID  - Dileeplal2025
ER  -