Microbial electrosynthesis of acetic acid from carbon dioxide using a bimetallic-granular activated carbon cathode

IF 4.9 2区化学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY

Bioelectrochemistry Pub Date : 2026-03-01 Epub Date: 2025-11-01 DOI:10.1016/j.bioelechem.2025.109158

Sadaf Shakeel , Mohammad Zain Khan , Mariya Shakeel

{"title":"Microbial electrosynthesis of acetic acid from carbon dioxide using a bimetallic-granular activated carbon cathode","authors":"Sadaf Shakeel , Mohammad Zain Khan , Mariya Shakeel","doi":"10.1016/j.bioelechem.2025.109158","DOIUrl":null,"url":null,"abstract":"<div><div>Development of highly stable, conductive, biocompatible and cost-effective cathode is crucial for scaling up microbial electrosynthesis (MES). Bimetallic cathodes have gain importance in recent times due wide application. Current study utilized a bimetallic (nickel and iron) impregnated granular activated carbon (Ni-Fe-GAC) cathode in microbial electrosynthesis. Ni-Fe-GAC cathode was prepared via treating GACs in a mixed solution of nickel chloride and iron sulphate. Deposition of metals on GAC facilitates the improved electron transfer and biofilm formation on the GAC surface, giving 1.4 times higher acetate production than plain GAC (control). Scanning electron microscopy (SEM) confirmed the well adaptation of anaerobic microbes on the surface of Ni-Fe-GAC cathode. Linear sweep voltammetry (LSV) confirmed the better electrochemical performance of Ni-Fe-GAC cathode. A regeneration test was also conducted via acid washing to remove metals from Ni-Fe-GAC followed by reloading. Regeneration successfully restored cathode performance, making Ni-Fe-GAC suitable for long-term application.</div></div>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":"168 ","pages":"Article 109158"},"PeriodicalIF":4.9000,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bioelectrochemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1567539425002610","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/11/1 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"BIOCHEMISTRY & MOLECULAR BIOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

Development of highly stable, conductive, biocompatible and cost-effective cathode is crucial for scaling up microbial electrosynthesis (MES). Bimetallic cathodes have gain importance in recent times due wide application. Current study utilized a bimetallic (nickel and iron) impregnated granular activated carbon (Ni-Fe-GAC) cathode in microbial electrosynthesis. Ni-Fe-GAC cathode was prepared via treating GACs in a mixed solution of nickel chloride and iron sulphate. Deposition of metals on GAC facilitates the improved electron transfer and biofilm formation on the GAC surface, giving 1.4 times higher acetate production than plain GAC (control). Scanning electron microscopy (SEM) confirmed the well adaptation of anaerobic microbes on the surface of Ni-Fe-GAC cathode. Linear sweep voltammetry (LSV) confirmed the better electrochemical performance of Ni-Fe-GAC cathode. A regeneration test was also conducted via acid washing to remove metals from Ni-Fe-GAC followed by reloading. Regeneration successfully restored cathode performance, making Ni-Fe-GAC suitable for long-term application.

Abstract Image

查看原文本刊更多论文

用双金属颗粒活性炭阴极从二氧化碳中电合成乙酸的微生物研究

开发高稳定性、导电性、生物相容性和高性价比的阴极对于扩大微生物电合成（MES）的规模至关重要。双金属阴极由于其广泛的应用，近年来越来越受到重视。目前的研究利用双金属（镍和铁）浸渍颗粒活性炭（Ni-Fe-GAC）阴极进行微生物电合成。在氯化镍和硫酸铁的混合溶液中处理gac，制备了Ni-Fe-GAC阴极。金属在GAC上的沉积促进了GAC表面的电子转移和生物膜的形成，使GAC的醋酸酯产量比普通GAC（对照组）高1.4倍。扫描电镜（SEM）证实厌氧微生物在Ni-Fe-GAC阴极表面具有良好的适应性。线性扫描伏安法（LSV）证实了Ni-Fe-GAC阴极具有较好的电化学性能。还进行了酸洗再生试验，以去除Ni-Fe-GAC中的金属，然后重新加载。再生成功地恢复了阴极性能，使Ni-Fe-GAC适合长期应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Bioelectrochemistry 生物-电化学

CiteScore

9.10

自引率

6.00%

发文量

238

审稿时长

38 days

期刊介绍： An International Journal Devoted to Electrochemical Aspects of Biology and Biological Aspects of Electrochemistry Bioelectrochemistry is an international journal devoted to electrochemical principles in biology and biological aspects of electrochemistry. It publishes experimental and theoretical papers dealing with the electrochemical aspects of: • Electrified interfaces (electric double layers, adsorption, electron transfer, protein electrochemistry, basic principles of biosensors, biosensor interfaces and bio-nanosensor design and construction. • Electric and magnetic field effects (field-dependent processes, field interactions with molecules, intramolecular field effects, sensory systems for electric and magnetic fields, molecular and cellular mechanisms) • Bioenergetics and signal transduction (energy conversion, photosynthetic and visual membranes) • Biomembranes and model membranes (thermodynamics and mechanics, membrane transport, electroporation, fusion and insertion) • Electrochemical applications in medicine and biotechnology (drug delivery and gene transfer to cells and tissues, iontophoresis, skin electroporation, injury and repair). • Organization and use of arrays in-vitro and in-vivo, including as part of feedback control. • Electrochemical interrogation of biofilms as generated by microorganisms and tissue reaction associated with medical implants.