Resourceful utilization of Bougainvillea horticultural waste for synchronous degradation and power generation in MFCs

IF 4.5 2区化学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY

Bioelectrochemistry Pub Date : 2026-08-01 Epub Date: 2026-01-24 DOI:10.1016/j.bioelechem.2026.109237

Yeling Zhou, Yicheng Wu, Bingjun Shu, Feipeng Xu

{"title":"Resourceful utilization of Bougainvillea horticultural waste for synchronous degradation and power generation in MFCs","authors":"Yeling Zhou, Yicheng Wu, Bingjun Shu, Feipeng Xu","doi":"10.1016/j.bioelechem.2026.109237","DOIUrl":null,"url":null,"abstract":"<div><div>The disposal of horticultural waste derived from <em>Bougainvillea</em> species poses substantial environmental challenges in coastal cities of southeastern China. This study innovatively employs <em>Bougainvillea</em> horticultural waste (BHW) as the main substrate in microbial fuel cells (MFCs) for simultaneous organic degradation and bioenergy recovery, with an acid-pretreated BHW-fed MFC (MFC-ABG) included for comparison. Results indicated that the untreated BHW-fed MFC (MFC-BG) achieved a peak voltage of 0.401 V and sustained operation for 19 days, coupled with 78.7% polysaccharide removal. Metagenomics showed that MFC-BG significantly enriched electroactive <em>Geobacter</em> (29.39%) and hydrolytic <em>Proteiniphilum</em> (2.69%), driving lignocellulose decomposition through oxidative auxiliary enzymes (AA4/AA6). Comparatively, MFC-ABG achieved an enhanced voltage of 0.706 V and a high polysaccharide reduction efficiency of 85.6%, benefits attributable to acid-induced substrate solubilization and glycoside hydrolase (GH)-dominated enzymatic shifts. Although microbial community diversity declined in both MFC systems, MFC-BG retained a higher species richness (MFC-BG: Sobs = 28,209; MFC-ABG: Sobs = 25,746), reflecting the adaptive resilience of the associated microbial community. This study confirms BHW as a viable feedstock for MFCs and clarifies the microbial mechanisms underlying the synergistic coupling of substrate degradation and electron transfer</div></div>","PeriodicalId":252,"journal":{"name":"Bioelectrochemistry","volume":"170 ","pages":"Article 109237"},"PeriodicalIF":4.5000,"publicationDate":"2026-08-01","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/S156753942600023X","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2026/1/24 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"BIOCHEMISTRY & MOLECULAR BIOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

The disposal of horticultural waste derived from Bougainvillea species poses substantial environmental challenges in coastal cities of southeastern China. This study innovatively employs Bougainvillea horticultural waste (BHW) as the main substrate in microbial fuel cells (MFCs) for simultaneous organic degradation and bioenergy recovery, with an acid-pretreated BHW-fed MFC (MFC-ABG) included for comparison. Results indicated that the untreated BHW-fed MFC (MFC-BG) achieved a peak voltage of 0.401 V and sustained operation for 19 days, coupled with 78.7% polysaccharide removal. Metagenomics showed that MFC-BG significantly enriched electroactive Geobacter (29.39%) and hydrolytic Proteiniphilum (2.69%), driving lignocellulose decomposition through oxidative auxiliary enzymes (AA4/AA6). Comparatively, MFC-ABG achieved an enhanced voltage of 0.706 V and a high polysaccharide reduction efficiency of 85.6%, benefits attributable to acid-induced substrate solubilization and glycoside hydrolase (GH)-dominated enzymatic shifts. Although microbial community diversity declined in both MFC systems, MFC-BG retained a higher species richness (MFC-BG: Sobs = 28,209; MFC-ABG: Sobs = 25,746), reflecting the adaptive resilience of the associated microbial community. This study confirms BHW as a viable feedstock for MFCs and clarifies the microbial mechanisms underlying the synergistic coupling of substrate degradation and electron transfer

查看原文本刊更多论文

九重葛园艺废弃物在mfc同步降解和发电中的资源化利用

九重葛园艺废弃物的处理对中国东南部沿海城市的环境造成了巨大的挑战。本研究创新性地采用九重葛园艺废弃物（BHW）作为微生物燃料电池（MFC）的主要底物，同时进行有机降解和生物能源回收，并采用酸预处理的九重葛园艺废弃物投料MFC （MFC- abg）进行比较。结果表明，未经处理的bhw投喂MFC （MFC- bg）的峰值电压为0.401 V，持续运行19 d，多糖去除率为78.7%。宏基因组学显示，MFC-BG显著富集电活性地杆菌（29.39%）和水解性嗜蛋白杆菌（2.69%），通过氧化辅酶（AA4/AA6）促进木质纤维素分解。相比之下，MFC-ABG实现了0.706 V的电压增强和85.6%的多糖还原效率，这得益于酸诱导的底物增溶和糖苷水解酶（GH）主导的酶移。尽管两种MFC系统的微生物群落多样性均有所下降，但MFC- bg系统保持了较高的物种丰富度（MFC- bg: Sobs = 28,209; MFC- abg: Sobs = 25,746），反映了相关微生物群落的适应弹性。本研究证实了BHW作为MFCs的可行原料，并阐明了底物降解和电子转移协同耦合的微生物机制

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.