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Activated microporous-mesoporous carbon derived from chestnut shell as a sustainable anode material for high performance microbial fuel cells
- Chen, Qin, Pu, Wenhong, Hou, Huijie, Hu, Jingping, Liu, Bingchuan, Li, Jianfeng, Cheng, Kai, Huang, Long, Yuan, Xiqing, Yang, Changzhu, Yang, Jiakuan
- Bioresource technology 2018 v.249 pp. 567-573
- anodes, biofilm, biomass, carbon, carbonization, chestnut shells, cost effectiveness, electricity, harvesting, microbial fuel cells, organic matter, porous media, wastewater
- Microbial fuel cells (MFCs) are promising biotechnologies tool to harvest electricity by decomposing organic matter in waste water, and the anode material is a critical factor in determining the performance of MFCs. In this study, chestnut shell is proposed as a novel anode material with mesoporous and microporous structure prepared via a simple carbonization procedure followed by an activation process. The chemical activation process successfully modified the macroporous structure, created more mesoporous and microporous structure and decreased the O−content and pyridinic/pyrrolic N groups on the biomass anode, which were beneficial for improving charge transfer efficiency between the anode surface and microbial biofilm. The MFC with activated biomass anode achieved a maximum power density (23.6 W m⁻³) 2.3 times higher than carbon cloth anode (10.4 W m⁻³). This study introduces a promising and feasible strategy for the fabrication of high performance anodes for MFCs derived from cost-effective, sustainable natural materials.