Enhancement of hydrogen production and energy recovery through electro-fermentation from the dark fermentation effluent of food waste
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To enhance hydrogen production efficiency and energy recovery, a sequential dark fermentation and microbial electrochemical cell (MEC) process was evaluated for hydrogen production from food waste. The hydrogen production, electrochemical performance and microbial community dynamics were investigated during startup of the MEC that was inoculated with different sludges. Results suggest that biogas production rates and hydrogen proportions were 0.83 L/L d and 92.58%, respectively, using anaerobic digested sludge, which is higher than that of the anaerobic granular sludge (0.55 L/L d and 86.21%). The microbial community were predominated by bacterial genus Acetobacterium , Geobacter , Desulfovibrio, and archaeal genus Methanobrevibacter in electrode biofilms and the community structure was relatively stable both in anode and cathode. The sequential system obtained a 53.8% energy recovery rate and enhanced soluble chemical oxygen demand (sCOD) removal rate of 44.3%. This research demonstrated an important approach to utilize dark fermentation effluent to maximize the conversion of fermentation byproducts into hydrogen.
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Hydrogen recovery was improved by the sequential process of electro-fermentation of food waste from the effluents of dark fermentation.
“Hydrogen recovery was also improved by the sequential process of electro-fermentation of food waste from the effluents of dark fermentation [53].”
From Food Waste Biorefinery: Pathway towards Circular Bioeconomy (2021) · cites this paper as [53]
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Food Waste Biorefinery: Pathway towards Circular Bioeconomy
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- Authors
- Jia, X., Li, M., Wang, Y., Wu, Y., Zhu, L., Wang, X., & Zhao, Y.
- Affiliations
- Beijing Technology and Business University (CN)
- Chinese Research Academy of Environmental Sciences (CN)
- Corresponding author
- Jia, Xuan
- Li, Mingxiao
- Venue
- Environmental Science and Ecotechnology
- Publisher
- Elsevier BV
- Published
- 2020-01
- Volume
- 1
- Pages
- 100006
- ISSN
- 2096-9643 (ISSN-L)
- 2666-4984
- PMC
- PMC9488049
- OpenAlex
- W2999448967
- Cited by
- 91
- References
- 50
- Citations by year
- 2026: 15 · 2025: 19 · 2024: 13 · 2023: 11 · 2022: 13 · 2021: 8 · 2020: 12
- FWCI
- 3.95
- Type
- journal article
- Language
- en
- Update notices
- erratum (2020-10-01)
- Open access
- gold
- doi.org
- Licence
- Locations
- Environmental Science and Ecotechnology (publishedVersion, cc-by-nc-nd)
- PubMed Central (publishedVersion, cc-by-nc-nd)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- National Natural Science Foundation of China (21406213, 51408572)
- Topics
- Physical Sciences › Environmental Science › Environmental Engineering › Microbial Fuel Cells and Bioremediation
- Physical Sciences › Engineering › Building and Construction › Anaerobic Digestion and Biogas Production
- Physical Sciences › Environmental Science › Waste Management and Disposal › Landfill Environmental Impact Studies
- Keywords
- hydrogen production, dark fermentation, microbial electrochemical cells, food waste, dark fermentation effluent, energy recovery, anaerobic digested sludge, anaerobic granular sludge, microbial community dynamics, Geobacter, Methanobrevibacter, soluble COD removal, biogas
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