A novel bio-electro-Fenton process with FeVO4/CF cathode on advanced treatment of coal gasification wastewater
A novel bio-electro-Fenton process with FeVO4/CF cathode on advanced treatment of coal gasification wastewater
复制标题
FeVO4/CF阴极生物电Fenton新型工艺深度处理煤气化废水
DOI：
10.1016/j.seppur.2017.11.073
复制
发表时间：
2018
影响因子：
8.6
通讯作者：
Shi Zhou
中科院分区：
文献类型：
--
作者：
Xu Peng;Xu Hao;Shi Zhou
研究了以FeVO 4/CF为阴极的新型生物电-芬顿法深度处理煤气化废水的可行性。在MFC-FeVO 4/CF体系中，当电压为326.8 mV时，最大功率密度为849.7 mW/m3，对应的电流密度为2.6 A/m3。短路条件下阴极出水BOD 5、COD、TOC和总酚的浓度分别为4.5 mg/L、32.5 mg/L、8.8 mg/L和15.6 mg/L，均达到《污水综合排放标准》一级标准。FeVO 4/CF可用作双效类Fenton催化剂，导致更多活性氧物种的产生。通过循环伏安法测量，证明了在阴极处原位生成类Fenton试剂（Fe（II），V（IV）和H2 O2）。这种新的工艺提供了一种具有成本效益的替代方案，将传统MFC和芬顿的实际优点扩展到工业废水的深度处理。
An investigation was carried out aimed at checking the feasibility of the novel bio-electro-Fenton process with FeVO4/CF cathode on advanced treatment of coal gasification wastewater. The maximum power density arrived 849.7 mW/m3in MFC-FeVO4/CF system, which was corresponding to a current density of 2.6 A/m3at the voltage of 326.8 mV. The concentration of BOD5, COD, TOC and total phenols in the cathode effluent under short-circuit conditions were 4.5 mg/L, 32.5 mg/L, 8.8 mg/L and 15.6 mg/L, respectively, which all met the class-I criteria of the Integrated Wastewater Discharge Standard. FeVO4/CF could be employed as a two-way Fenton-like catalyst that leads to the production of more reactive oxygen species. The in situ generation of Fenton-like reagents (Fe(II, V(IV) and H2O2) at the cathode was demonstrated by the cyclic voltammetry measurement. This novel process provides a cost-effective alternative to extend the practical merits of traditional MFCs and Fenton towards advanced treatment of industrial wastewater.