期刊
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
卷 11, 期 2, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jece.2023.109608
关键词
Microbial fuel cells; Wax gourd; Carbon monolith; Geobacter
A porous carbon monolith derived from wax gourd (WGCM) was prepared by freeze-drying and carbonization, and then coated with nano-Fe3O4 to obtain the nano-Fe3O4/WGCM anode. The WGCM anode increased the maximum power density of microbial fuel cells (MFCs), and the nano-Fe3O4/WGCM anode further promoted it. The results demonstrated that the preparation of carbon monolith coated with nano-Fe3O4 was a promising method for anode enhancement in MFCs.
Anode materials were vital for power production in microbial fuel cells (MFCs). By freeze-drying and carbon-ization, porous carbon monolith derived from wax gourd (WGCM) was prepared. WGCM was then coated by nano-Fe3O4 to obtain the nano-Fe3O4/WGCM anode. WGCM anode increased the maximum power density of the MFCs from 430.6 mW/m2 to 906.6 mW/m2, while nano-Fe3O4/WGCM anode further promoted it to 1438.8 mW/ m2. WGCM had a three-dimensional (3D) microporous network structure, a hydrophilic surface and good con-ductivity, which enhanced biofilm formation and reduced internal resistance. Fe3O4 increased Geobacter enrichment on anode surface, a popular electricigen in MFCs. Calculated from anode surface microbial cell density and the relative abundance, Geobacter on the nano-Fe3O4/WGCM increased by 41.4% compared with the WGCM anode. The results demonstrated that the preparation of carbon monolith coated with nano-Fe3O4 was a promising method for anode enhancement in MFCs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据