Effect of graphite fibers on the performance of sediment microbial fuel cell
Effect of graphite fibers on the performance of sediment microbial fuel cell
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DOI：
10.1002/ep.12263
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发表时间：
2016-05
影响因子：
2.8
通讯作者：
Yan Cai;Na Yang;Yueping Ren;Xiufen Li;Yu-gang Shi;Rong Zhu;Xinhua Wang
中科院分区：
文献类型：
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作者：
Yan Cai;Na Yang;Yueping Ren;Xiufen Li;Yu-gang Shi;Rong Zhu;Xinhua Wang
沉积物微生物燃料电池（SMFC）是一种利用微生物作为生物催化剂，将污泥或河湖沉积物中的有机物氧化发电的新技术。在阳极泥中掺入导电石墨纤维可明显提高SMFC的产电性能。SMFC的输出电压和最大功率密度（Pmax）随着添加的石墨纤维从0.5至5 g L-1的增加而增加。最终，具有5 g L−1石墨纤维的SMFC（SMFC-5）表现出最高输出电压（154 mV）和Pmax（12.48 mW m−2），而空白SMFC的分别为65 mV和4.68 mW m−2。此外，随着石墨纤维含量的增加，SMFC阳极表面的磷脂浓度增加，相应阳极的电荷转移电阻（Rct）明显降低。此外，随着石墨纤维的增加，化学需氧量去除效率从空白SMFC的12.72%增加到SMFC-5的44.64%。然而，具有0.5 g L−1石墨纤维的SMFC（SMFC-0.5）提供了最高的库仑效率（CE%），2.46%。© 2015美国化学工程师学会环境规划，35：876-881，2016
Sediment microbial fuel cell (SMFC) is a novel technology that oxidizes organics in sludge or river/lake sediment to generate electricity using microorganisms as the biocatalyst. The electricity production performance of the SMFC was obviously enhanced by mixing conductive graphite fibers into the anodic sludge. The output voltages and the maximum power densities (Pmax) of the SMFCs increased with the increase in the added graphite fibers from 0.5 to 5 g L−1. Ultimately, the SMFC with 5 g L−1 graphite fibers (SMFC‐5) exhibited the uppermost output voltage (154 mV) and Pmax (12.48 mW m−2), whereas that of the blank SMFC were 65 mV and 4.68 mW m−2, respectively. Moreover, the phospholipid concentrations on the anode surfaces of the SMFCs augmented with the increase of graphite fibers and the charge‐transfer resistance (Rct) of the corresponding anodes evidently decreased when the amount of graphite fibers was increased. Furthermore, with the increase of graphite fibers, chemical oxygen demand removal efficiencies increased from 12.72% of the blank SMFC to 44.64% of the SMFC‐5. However, the SMFC with 0.5 g L−1 graphite fibers (SMFC‐0.5) provided the highest coulombic efficiency (CE%), 2.46%. © 2015 American Institute of Chemical Engineers Environ Prog, 35: 876–881, 2016