MFC-非均相Fenton法的甲基红脱色及产电性能研究

doi:10.11894/1005-829x.2015.35(4).036

摘要/Abstract

摘要：

提出了微生物燃料电池(MFC)-非均相Fenton法处理染料废水的新概念。在双室MFC碳纸阴极上添加石墨烯和Fe₃O₄纳米颗粒(质量比1:1)复合物涂层,给阴极室曝气,在pH为中性条件下,阴极氧接受从阳极传递过来的电子原位生成H₂O₂,并与Fe₃O₄纳米颗粒发生非均相Fenton反应生成·OH,从而促进阴极室内甲基红溶液的脱色。实验结果表明,48 h内该方法对甲基红的脱色率达86.5%,同时MFC电压稳定保持在(0.238±0.007) V。实验过程中未检出Fe²⁺和Fe³⁺,说明未发生均相Fenton反应。

关键词: 石墨烯, Fe₃O₄, 微生物燃料电池, 脱色, 甲基红

Abstract:

The combined process,microbial fuel cell(MFC)-heterogeneous Fenton-like reaction as a new concept used for treating dye wastewater has been proposed. Grapheme and Fe₃O₄ nano-particles,whose mass ratio is 1:1 should be smeared on the surface of carbon paper cathode in the dual-chamber MFC. As the aeration takes place in cathode chamber,the pH is under a neutral condition,cathode oxygen adopts the electrons transmitted from anode, H₂O₂ is in-situ produced and heterogeneous Fenton-like reaction is triggered with Fe₃O₄ nano-particles and produce hydroxyl radicals, facilitating the decolorization of methyl red. The experimental results show that the decolorization rate of methyl red can reach 86.5% and the MFC voltage is maintained at(0.238±0.007) V in 48 hours. Furthermore, ferrous and ferric iron have not been detected in experiments, indicating that homogenous Fenton reaction has not occurred.

Key words: graphene, Fe₃O₄, microbial fuel cell, decolorization, methyl red

中图分类号:

X703.1

彭宏, 刘维仪, 黎嘉天. MFC-非均相Fenton法的甲基红脱色及产电性能研究[J]. 工业水处理, 2015, 35(4): 36-40.

Peng Hong, Liu Weiyi, Li Jiatian. Research on the decolorization of methyl red and bioelectricity generating capacity by a combined process,MFC and heterogeneous Fenton-like reaction[J]. INDUSTRIAL WATER TREATMENT, 2015, 35(4): 36-40.

https://www.iwt.cn/CN/Y2015/V35/I4/36

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