A single-chamber microbial fuel cell as a biosensor for wastewaters
A single-chamber microbial fuel cell as a biosensor for wastewaters
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DOI：
10.1016/j.watres.2009.01.005
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发表时间：
2009-07-01
期刊：
影响因子：
12.8
通讯作者：
Scott, Keith
中科院分区：
文献类型：
--
作者：
Di Lorenzo, Mirella;Curtis, Tom P.;Scott, Keith
传统的生化需氧量5天法(BOD(5)法)有很多缺点，主要是不适合过程控制和实时监测。作为替代方案，对空气阴极单室微生物燃料电池(SCMFC)作为生物传感器进行了测试，并从测量范围、响应时间、重复性和操作稳定性等方面分析了其性能。当以人工废水为燃料时，生物传感器的输出与BOD浓度呈线性关系，最高可达350 mg BOD cm(-3)，具有很高的重现性和运行7个月的稳定性，系统进一步改进，将阳极液的总体积减少了75%。这样，响应时间接近生物传感器的水力停留时间(HRT)(即40分钟)。当小体积SCMFC生物传感器以实际废水为原料时，COD浓度与电流输出之间有很好的相关性，证明了该系统对实际废水的适用性。用生物传感器获得的测量值也与用标准测量方法获得的值一致。(C)爱思唯尔有限公司出版的2009年。
The traditional 5-day test of the biochemical oxygen demand (BOD(5) test) has many disadvantages, and principally it is unsuitable for process control and real-time monitoring. As an alternative, a single-chamber microbial fuel cell (SCMFC) with an air cathode was tested as a biosensor and the performance analysed in terms of its measurement range, its response time, its reproducibility and its operational stability. When artificial wastewater was used as fuel, the biosensor output had a linear relationship with the BOD concentration up to 350 mg BOD cm(-3); very high reproducibility; and stability overy 7 months of operation.The system was further improved by reducing by 75% the total anolyte volume. In this way a response time close to the hydraulic retention time (HRT) of the biosensor (i.e. 40 min) was reached. When the small volume SCMFC biosensor was fed with real wastewater a good correlation between COD concentration and current output was obtained, demonstrating the applicability of this system to real effluents. The measurements obtained with the biosensor were also in accordance with values obtained with standard measurement methods. (C) 2009 Published by Elsevier Ltd.