Weldegrum Getabalew Shifera, Zemedagegnehu Demise Alebachew, Demeku Aknachew Mebreku, TesfayeTadesse Tekalign, Demewoz Nigus Maregu, Haile Cheru Talbachew, Gizaw Endashaw Tilahun, Atnafu Tesfalem, Hussein Beshir A, Fuli Abire Huluka
Department of Chemistry, Mattu University, P.O. Box 318, Mattu, Ethiopia.
Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, 106335, Taiwan.
Sci Rep. 2025 Jul 30;15(1):27879. doi: 10.1038/s41598-025-08458-5.
Microbial fuel cell (MFC) technology is gaining popularity as a viable and sustainable method of energy and power generation, while simultaneously reducing environmental pollution levels. However, MFCs are not economically feasible due to their low energy productivity and the high cost of producing anode materials. In this study, an anode made of an enset corm biosynthetic graphene derivative (E-rGO) was installed in the dual chamber of an MFC. In addition, a composite anode of E-rGO/FeO was developed to remove Cr (VI) and Pb (II) ions from wastewater while simultaneously generating energy. The synthesized materials were analyzed using UV-Vis, SEM-EDS, XRD, FTIR, RAMA, and TGA spectroscopy to investigate the materials' optical, morphological, and structural properties, molecular vibrational states, structural defects, and thermal stability. CV and EIS were also utilized to investigate the electrochemical characteristics of the synthesized materials. For Cr (VI), the anodes made using E-rGO, and E-rGO/FeO NCs had remediation efficiencies of 70.6%, and 79.2%, while for Pb (II), they were 65.1%, and 73.8%. Furthermore, the composite anode (E-rGO/FeO NCs) delivered a maximum power density of (39.77 mW/m) and a current density of (1171 mA/m), higher than E-rGO modified anode electrode power density (8.75 mW/m) and current density (609 mA/m), respectively. The final results of the produced anodes revealed that Enset corm biomass is a viable and affordable material for improving MFC anode performance. The outcome of the manufactured anodes suggests that enset corm biomass is a viable and economical material to improve MFC anode efficiency.
微生物燃料电池（MFC）技术作为一种可行且可持续的能源和电力生产方法，同时降低环境污染水平，正日益受到欢迎。然而，由于其低能量生产率和阳极材料生产成本高，MFC在经济上并不可行。在本研究中，将由香蕉假茎球茎生物合成石墨烯衍生物（E-rGO）制成的阳极安装在MFC的双室中。此外，还开发了E-rGO/FeO复合阳极，用于从废水中去除Cr（VI）和Pb（II）离子，同时产生能量。使用紫外可见光谱、扫描电子显微镜-能谱仪、X射线衍射、傅里叶变换红外光谱、拉曼光谱和热重分析光谱对合成材料进行分析，以研究材料的光学、形态和结构性质、分子振动状态、结构缺陷和热稳定性。循环伏安法和电化学阻抗谱也用于研究合成材料的电化学特性。对于Cr（VI），使用E-rGO和E-rGO/FeO纳米复合材料制成的阳极的修复效率分别为70.6%和79.2%，而对于Pb（II），它们分别为65.1%和73.8%。此外，复合阳极（E-rGO/FeO纳米复合材料）的最大功率密度为（39.77 mW/m），电流密度为（1171 mA/m），分别高于E-rGO修饰阳极电极的功率密度（8.75 mW/m）和电流密度（609 mA/m）。所制备阳极的最终结果表明，香蕉假茎球茎生物质是一种可行且经济的材料，可用于提高MFC阳极性能。所制造阳极的结果表明，香蕉假茎球茎生物质是一种可行且经济的材料，可提高MFC阳极效率。
