Utilizing different food cultures for wastewater treatment and enhanced power generation in microbial fuel cells

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING Biomass & Bioenergy Pub Date : 2025-02-17 DOI:10.1016/j.biombioe.2025.107706

Tariq Nawaz Chaudhary , Shaheryar Ahmed , Muhammad Usman , Ali O.M. Maka , Shafqat Rasool , Mohammad Ghaleeh , Baixin Chen

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Abstract

This study investigates the impact of reactor architecture and biocompatibility of anode material on wastewater treatment and power generation in single-chamber (SC) and dual-chamber (DC) microbial fuel cells (MFCs) by utilizing different bacterial food cultures. Comparison between graphite-coated Cu (composite) and 304L stainless steel (SS) anodes is presented under optimized pH (7.13) and temperature (34 °C). Food cultures, especially buttermilk with an acetic acid substrate, significantly enhanced power density (PD), achieving 2.17 W/m² using composite anode and 1.67 W/m² using SS in SCMFCs. Mixed food cultures raised performance by ∼50 % achieving 3.31 W/m² and 2.97 W/m² using composite and SS anodes respectively. High chemical oxygen demand (COD) removal rates (>68 %) confirm effective wastewater treatment. These findings suggest that macroporous composite anodes can improve microbial compatibility and power output in MFCs, with optimal performance observed at neutral pH and ambient temperatures.

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在微生物燃料电池中利用不同的食物培养物进行废水处理和增强发电

本研究利用不同的细菌食物培养物，研究了反应器结构和阳极材料的生物相容性对单室（SC）和双室（DC）微生物燃料电池（MFCs）废水处理和发电的影响。在优化的pH值（7.13）和温度（34℃）下，比较了石墨包覆Cu（复合）阳极和304L不锈钢（SS）阳极的性能。在scmfc中，食物培养，特别是含有乙酸底物的脱脂乳，显著提高了功率密度（PD），使用复合阳极达到2.17 W/m2，使用SS达到1.67 W/m2。混合食物培养提高了约50%的性能，使用复合阳极和SS阳极分别达到3.31 W/m2和2.97 W/m2。高化学需氧量（COD）去除率（> 68%）证实了有效的废水处理。这些发现表明，大孔复合阳极可以改善mfc的微生物相容性和功率输出，在中性pH和环境温度下表现最佳。

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来源期刊

Biomass & Bioenergy 工程技术-能源与燃料

CiteScore

11.50

自引率

3.30%

发文量

258

审稿时长

60 days

期刊介绍： Biomass & Bioenergy is an international journal publishing original research papers and short communications, review articles and case studies on biological resources, chemical and biological processes, and biomass products for new renewable sources of energy and materials. The scope of the journal extends to the environmental, management and economic aspects of biomass and bioenergy. Key areas covered by the journal: • Biomass: sources, energy crop production processes, genetic improvements, composition. Please note that research on these biomass subjects must be linked directly to bioenergy generation. • Biological Residues: residues/rests from agricultural production, forestry and plantations (palm, sugar etc), processing industries, and municipal sources (MSW). Papers on the use of biomass residues through innovative processes/technological novelty and/or consideration of feedstock/system sustainability (or unsustainability) are welcomed. However waste treatment processes and pollution control or mitigation which are only tangentially related to bioenergy are not in the scope of the journal, as they are more suited to publications in the environmental arena. Papers that describe conventional waste streams (ie well described in existing literature) that do not empirically address ''new'' added value from the process are not suitable for submission to the journal. • Bioenergy Processes: fermentations, thermochemical conversions, liquid and gaseous fuels, and petrochemical substitutes • Bioenergy Utilization: direct combustion, gasification, electricity production, chemical processes, and by-product remediation • Biomass and the Environment: carbon cycle, the net energy efficiency of bioenergy systems, assessment of sustainability, and biodiversity issues.