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Enhancement of hydrogen production and energy recovery through electro-fermentation from the dark fermentation effluent of food waste

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 investigate...

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Detalles Bibliográficos
Autores principales: Jia, Xuan, Li, Mingxiao, Wang, Yong, Wu, Yanan, Zhu, Lin, Wang, Xue, Zhao, Yujiao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9488049/
http://dx.doi.org/10.1016/j.ese.2019.100006
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author Jia, Xuan
Li, Mingxiao
Wang, Yong
Wu, Yanan
Zhu, Lin
Wang, Xue
Zhao, Yujiao
author_facet Jia, Xuan
Li, Mingxiao
Wang, Yong
Wu, Yanan
Zhu, Lin
Wang, Xue
Zhao, Yujiao
author_sort Jia, Xuan
collection PubMed
description 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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spelling pubmed-94880492022-09-23 Enhancement of hydrogen production and energy recovery through electro-fermentation from the dark fermentation effluent of food waste Jia, Xuan Li, Mingxiao Wang, Yong Wu, Yanan Zhu, Lin Wang, Xue Zhao, Yujiao Environ Sci Ecotechnol Original Research 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. Elsevier 2019-12-23 /pmc/articles/PMC9488049/ http://dx.doi.org/10.1016/j.ese.2019.100006 Text en © 2020 The Authors https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Original Research
Jia, Xuan
Li, Mingxiao
Wang, Yong
Wu, Yanan
Zhu, Lin
Wang, Xue
Zhao, Yujiao
Enhancement of hydrogen production and energy recovery through electro-fermentation from the dark fermentation effluent of food waste
title Enhancement of hydrogen production and energy recovery through electro-fermentation from the dark fermentation effluent of food waste
title_full Enhancement of hydrogen production and energy recovery through electro-fermentation from the dark fermentation effluent of food waste
title_fullStr Enhancement of hydrogen production and energy recovery through electro-fermentation from the dark fermentation effluent of food waste
title_full_unstemmed Enhancement of hydrogen production and energy recovery through electro-fermentation from the dark fermentation effluent of food waste
title_short Enhancement of hydrogen production and energy recovery through electro-fermentation from the dark fermentation effluent of food waste
title_sort enhancement of hydrogen production and energy recovery through electro-fermentation from the dark fermentation effluent of food waste
topic Original Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9488049/
http://dx.doi.org/10.1016/j.ese.2019.100006
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