Bio-Electron-Fenton (BEF) process driven by microbial fuel cells for triphenyltin chloride (TPTC) degradation.
Bio-Electron-Fenton (BEF) process driven by microbial fuel cells for triphenyltin chloride (TPTC) degradation.
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DOI：
10.1016/j.jhazmat.2016.10.047
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发表时间：
2017-02
影响因子：
13.6
通讯作者：
Xiaoyu Yong;Donglei Gu;Yuandong Wu;Zhiying Yan;Jun Zhou;Xiayuan Wu;P. Wei;Honghua Jia;Tao Zhen
中科院分区：
文献类型：
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作者：
Xiaoyu Yong;Donglei Gu;Yuandong Wu;Zhiying Yan;Jun Zhou;Xiayuan Wu;P. Wei;Honghua Jia;Tao Zhen
氯化三苯基锡（TPTC）的大量使用造成了严重的环境污染。本研究基于生物电子-芬顿法，提出了一种有效的微生物燃料电池（MFC）降解TPTC的方法。以石墨毡为电极的MFC的最大电压比以碳布为电极的MFC的最大电压高278.47%。MFC产生的电能可用于在Fe@Fe2O3（*）/石墨毡复合阴极上原位产生H2 O2，最高可达135.96 μmol L− 1，并进一步与浸出的Fe 2+反应产生羟基自由基。当阴极室中加入100 μmol L− 1 TPTC时，TPTC的降解率为78.32 ± 2.07%，降解速率为0.775 ± 0.021 μmol L−1h−1。这种生物电子芬顿驱动的TPTC降解可能涉及锡单键-碳键的断裂，其主要过程可能是逐步脱苯直至形成无机锡和CO2.本研究为TPTC的降解提供了一种节能、高效的途径。
The intensive use of triphenyltin chloride (TPTC) has caused serious environmental pollution. In this study, an effective method for TPTC degradation was proposed based on the Bio-Electron-Fenton process in microbial fuel cells (MFCs). The maximum voltage of the MFC with graphite felt as electrode was 278.47% higher than that of carbon cloth. The electricity generated by MFC can be used forin situgeneration of H2O2to a maximum of 135.96 μmol L−1at the Fe@Fe2O3(*)/graphite felt composite cathode, which further reacted with leached Fe2+to produce hydroxyl radicals. While 100 μmol L−1TPTC was added to the cathodic chamber, the degradation efficiency of TPTC reached 78.32 ± 2.07%, with a rate of 0.775 ± 0.021 μmol L−1h−1. This Bio-Electron-Fenton driving TPTC degradation might involve in Snsingle bondC bonds breaking and the main process is probably a stepwise dephenylation until the formation of inorganic tin and CO2. This study provides an energy saving and efficient approach for TPTC degradation.