A batch-mode cube microbial fuel cell based "shock" biosensor for wastewater quality monitoring
A batch-mode cube microbial fuel cell based "shock" biosensor for wastewater quality monitoring
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DOI：
10.1016/j.bios.2014.06.051
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发表时间：
2014-12-15
影响因子：
12.6
通讯作者：
Li, Baikun
中科院分区：
文献类型：
--
作者：
Liu, Bingchuan;Lei, Yu;Li, Baikun
采用单室间歇式立方体微生物燃料电池（CMFC）作为一种新型的自维持生物传感器，对废水中典型有毒金属的毒性冲击（毒性浓度突变）进行实时监测。选择铬、铁、硝酸盐和乙酸钠四种冲击分别代表废水中急性毒性重金属、低毒金属、常见营养盐和有机污染物的冲击。以废水为接种物，在CMFC中培养阳极产电菌，3天内即可完全驯化，表明该自供电传感器可以快速适应废水。结果表明，CMFC能够根据电压信号的变化区分毒素和非毒素的冲击。阳极开路电位（OCP）值与CMFC电压变化具有良好的相关性，表明电压变化主要取决于阳极表面产电菌的活性。由爱思唯尔公司出版
A single chamber batch-mode cube microbial fuel cell (CMFC) was explored as a novel self-sustained biosensor for real-time monitoring the toxicity shocks (sudden change in toxins concentration) of representative toxic metals in wastewater influent. Four types of shocks, including chromium, iron, nitrate, and sodium acetate, were selected to represent the shocks of acute-toxic heavy metal, low-toxic metal, common nutrient, and organic contaminant in wastewater, respectively. Wastewater was used as the inoculum in CMFCs for anodic electrogenic bacteria that were fully acclimated within 3 days, which indicated that this self-powered sensor can be quickly adapted to wastewater. The results showed that the CMFC was able to distinguish shocks of toxins from non-toxins based on voltage signal changes. Anode open circuit potential (OCP) values were well correlated with the CMFC voltage changes, indicating that the voltage changes were mainly dependent on the activity of the electrogenic bacteria on the anode surfaces. Published by Elsevier B.V.