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题名: Increasing removal of benzene from groundwater using stacked tubular air-cathode microbial fuel cells
作者: Liu
Chi-Yung Lai
Jhe-Wei Ye
Chi-Wen Lin
贡献者: 國立臺灣海洋大學:地球科學研究所
关键词: Benzene removal
Tubular microbial fuel cell (t-MFC)
Cathodic aeration
Stacked configuration
Groundwater bioremediation
日期: 2018-09
上传时间: 2018-12-27T02:53:08Z
出版者: Journal of Cleaner Production
摘要: Abstract: This work develops a small-scale microbial fuel cell (MFC) and evaluates their performance in series or in parallel as a tubular MFC (t-MFC) in removing benzene from groundwater and generating electricity. The results indicate that the time required (tr) for t-MFC to remove all benzene was half of that required by a single MFC. The maximum power density (Pmax) of the serially-connected t-MFC was 12.7 mW/m2, a 3.3-fold increase over the single t-MFC. An optimal benzene removal efficiency with a tr of four days was achieved under persistent aeration at the cathode of the t-MFC, and this tr was 1.25–3-fold lower than those obtained under other aeration conditions. Tubular MFCs connected in series had a higher open-circuited voltage (655 mV) and a lower tr, but the Pmax and maximum current density of the parallelly-connected t-MFC were 3.8 and 1.5 times those of the t-MFC with a serial connection. Intermittent aerating of the cathode improved the removal of benzene and the generation of electricity in a t-MFC by providing sufficient levels of oxygen for the reaction to achieve Pmax. The small t-MFC was easily scaled up by stacking MFCs in series mode, with great potential for field-scale application for in situ bioremediation in hydrocarbon-contaminated groundwater.
關聯: 194 pp.78-84
显示于类别:[應用地球科學研究所] 期刊論文


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