Degradation of azo dyes using in-situ Fenton reaction incorporated into H2O2-producing microbial fuel cell
Degradation of azo dyes using in-situ Fenton reaction incorporated into H2O2-producing microbial fuel cell
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利用原位芬顿反应降解偶氮染料并纳入产 H2O2 微生物燃料电池
DOI：
10.1016/j.cej.2010.03.032
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发表时间：
2010-05-15
影响因子：
15.1
通讯作者：
Fang, Xiao-hong
中科院分区：
文献类型：
--
作者：
Fu, Lei;You, Shi-Jie;Fang, Xiao-hong
研究了微生物燃料电池（MFC）-芬顿（Fenton）体系对偶氮染料的降解，该体系通过在中性阴极电解液中氧的双电子还原原位产生H2 O2。采用先合成H2 O2再进行芬顿反应的顺序操作，当Fe 2+浓度为1 mmol/L时，MFC-常规芬顿体系对75 mg/L苋菜红的去除率在1 h内达到82.59%.在MFC-电化学芬顿体系中，添加0.5 mmol/L的Fe 3+，阿马兰斯红（75 mg/L）的去除率可达76.43%，阴极电位稳定1 h。同时，当以K3 Fe（CN）（6）为阴极电子受体时，获得了28.3W/m3的最大功率密度，大于K3 Fe（CN）（6）为阴极电子受体时的17.2W/m3。该研究提出了一种利用可生物降解废水产生的能量沿着电能同时进行处理的概念验证新方法，使含染料废水处理成为一种绿色处理工艺，更具可持续性。(C)2010爱思唯尔有限公司版权所有。
This study investigated degradation of azo dyes by using microbial fuel cell (MFC)-Fenton system, in which in-situ production of H2O2 was achieved through two-electron reduction of oxygen in neutral catholyte. Based on sequential operation where H2O2 was synthesized followed by Fenton reaction, the MFC-conventional Fenton system was shown able to remove amaranth (75 mg/L) with the ratio of 82.59% within 1 h when 1 mmol/L Fe2+ was applied. For the MFC-electrochemical Fenton system with 0.5 mmol/L Fe3+ addition, the removal ratio of amaranth (75 mg/L) could reach 76.43% and cathode potential could keep stable for 1 h. Meanwhile, a maximum power density of 28.3 W/m(3) was obtained, which was larger than that of 17.2 W/m(3) when K3Fe(CN)(6) was used as cathodic electron acceptor. This study suggests a proof-in-concept new manner for biorefractory wastewater treatment using the energy produced from biodegradable wastewater along with electrical energy generation simultaneously, which makes dye-containing wastewater treatment a green treatment process and more sustainable. (C) 2010 Elsevier B.V. All rights reserved.