Reinforcement of Microbial Electrolytic Cells by Redox Mediators Modified Carbon Felt Electrodes: Electrochemistry and Microbial Dynamics.

Yuze Jiang, Yakun Lu, Yuchen Zhang, Hongbo Liu, Liansheng Li, Jonathan Wong, Gang Zhou, Suyun Xu

Abstract read

In one paragraph

Article in Applied biochemistry and biotechnology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

8 authors.

Yuze JiangSchool of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China.

Yakun LuSchool of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China.

Yuchen ZhangSchool of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China.

Hongbo LiuSchool of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China.

Liansheng LiSchool of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China.

Jonathan WongResearch Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan, Guangdong Province, 523808, China.

Gang ZhouZhejiang Province Environmental Engineering, Co. Ltd, Ningbo, Zhejiang Province, 315100, China.

Suyun XuSchool of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China. xusy@usst.edu.cn.ORCID http://orcid.org/0000-0001-6530-3318

Funding

National Natural Science Foundation of China No. 52370144

6 · The paper itself

Abstract

Redox mediators (RMs) have been widely employed in bioelectrochemical systems to enhance electron transfer efficiency. However, systematic comparisons of RM-driven microbial selectivity and its direct correlation with methane production in microbial electrolysis cells (MECs) remain unexplored. This study investigates methane production in MECs using carbon felt (CF) electrodes modified with four RMs, i.e., neutral red (NR), anthraquinone-2,6-disulfonic acid disodium salt (AQDS), humic acid (HA), methyl viologen (MV), and the conductive polymer polyaniline (PANI). Cyclic voltammetry and electrochemical impedance spectroscopy revealed superior electrochemical activity for NR- and HA-modified electrodes (CF-NR, CF-HA) among the tests. CF-NR and CF-PANI demonstrated the highest biocompatibility, supporting 25% and 15% greater biofilm biomass than unmodified CF, respectively. Modified electrodes exhibited lower alpha diversity than CF, indicating enhanced selectivity in microbial enrichment. Overall, CF-HA achieved the highest methane yield (304.1 mL CH

Indexed as

BiofilmsBioreactorsCarbon FiberElectrodesMethaneMicrobiotaElectrolysisHumic SubstancesOxidation-ReductionCarbon FiberHumic SubstancesMethaneElectroactive biofilmElectrochemical performanceMethane productionModified electrodesRedox mediators

Identifiers

PMID41118127

DOI10.1016/j.envres.2024.119635

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.