The mechanism and oxidation efficiency of bio-electro-Fenton system with Fe@Fe2O3/ACF composite cathode
The mechanism and oxidation efficiency of bio-electro-Fenton system with Fe@Fe2O3/ACF composite cathode
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Fe@Fe2O3/ACF复合阴极生物电Fenton体系的机理及氧化效率
DOI：
10.1016/j.seppur.2019.116103
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发表时间：
2020-03
影响因子：
8.6
通讯作者：
Hou Baolin
中科院分区：
文献类型：
--
作者：
Xu Peng;Zheng Dayang;Xie Zhiyi;Ma Jingwei;Yu Jian;Hou Baolin
采用Fe@Fe2O3/ACF复合阴极，构建了一种新型的双室耦合电fenton （EF）微生物燃料电池（MFC）系统，可在正极和负极同时降解猪废水（SW）和罗丹明B （RhB）。24 h后,取消利率85.2 ± 3.3%,75.1 ±3.1%和60.5 ±2.8% BOD5、COD和TOC在阳极,分别的阴极RhB去除效率为95.0 ±3.5% RhB 10 mg / L,外部阻力120 Ω,空气流量0.3 L / min,阳极酸碱10和阴极3。同时，最大功率密度为16.7 W/m3，电流密度为36 A/m3，电压为900 mV。最后，通过俘获实验和电子自旋共振（ESR）验证了羟基自由基（dotOH自由基）是主要的活性氧化物质，从而提出了RhB的电子传递机制和降解途径。集成生物电fenton （BEF）具有长期稳定性，是一种很有前途的生态友好型难处理废水处理技术。
A novel microbial fuel cell (MFC) system coupled with electro-Fenton (EF) in a two-chamber was constructed using a Fe@Fe2O3/ACF composite cathode to simultaneously degrade swine wastewater (SW) and rhodamine B (RhB) in both anode and cathode chambers. After 24 h, the removal rates were 85.2 ± 3.3%, 75.1 ± 3.1% and 60.5 ± 2.8% for BOD5, COD and TOC in the anode, respectively, the cathodic RhB removal efficiency was 95.0 ± 3.5% at RhB 10 mg/L, external resistance 120 Ω, air flow rate 0.3 L/min, anodic pH 10 and cathodic pH 3. Meanwhile, the maximum power density, current density, voltage were 16.7 W/m3, 36 A/m3, 900 mV, respectively. Finally, it was validated by trapping experiments and electron spin resonance (ESR) that hydroxyl radical (radical dotOH) was the main reactive oxidizing specie, thereby the electron transfer mechanism and the degradation pathway of RhB were put forward. The integrated bio-electro-Fenton (BEF) was verified to be long-term stability, and might be a promising eco-friendly technique for refractory wastewater treatment.
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影响因子：
12.8
作者：
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通讯作者：
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作者：
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作者：
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影响因子：
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作者：
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