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Updated: Jun 2, 2026
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Hydrogen Production and Utilization in a Membrane Reactor
Published on: March 10, 2023
Hydrogen production: two stage processes for waste degradation.
X Gómez1, C Fernández, J Fierro
1Chemical Engineering Department, University of Leon, IRENA, Avda. de Portugal 41, Leon 24071, Spain. xagomb@unileon.es
Bioresource Technology
|April 13, 2011
Summary
Dark fermentation produces hydrogen biologically under mild conditions, utilizing residual biomass. Enhancing hydrogen yield requires exploring advanced processes like photofermentation or bioelectrochemical systems for effluent treatment.
Area of Science:
- Biotechnology
- Renewable Energy
- Environmental Science
Background:
- Dark fermentation is a biological process for hydrogen generation.
- It offers mild operational conditions and utilizes residual biomass.
- Increasing hydrogen yield is a key challenge in this process.
Purpose of the Study:
- To review recent advancements in fermentative hydrogen production.
- To explore secondary treatment processes for dark fermentation effluents.
- To assess the potential of photofermentation, bioelectrochemical systems, and anaerobic digestion for H2 valorization.
Main Methods:
- Literature review of recent studies on dark fermentation.
- Analysis of secondary treatment options for fermentation effluents.
- Evaluation of photofermentation, bioelectrochemical systems (BES), and anaerobic digestion.
Main Results:
- Dark fermentation has a maximum theoretical hydrogen yield of 33% from sugars.
- Secondary processes can further convert fermentation by-products into hydrogen.
- Bioelectrochemical systems and photofermentation are promising for H2 production from effluents.
Conclusions:
- Dark fermentation is a viable pre-treatment for biomass valorization.
- Integrating secondary treatment stages is crucial for maximizing hydrogen yield.
- Further research into BES and photofermentation can enhance sustainable hydrogen production.
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