The efficiency and mechanism in a novel electro-Fenton process assisted by anodic photocatalysis on advanced treatment of coal gasification wastewater
The efficiency and mechanism in a novel electro-Fenton process assisted by anodic photocatalysis on advanced treatment of coal gasification wastewater
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阳极光催化辅助新型电Fenton工艺深度处理煤气化废水的效率和机理
DOI:
10.1016/j.cej.2018.12.171
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发表时间:
2019-04
影响因子:
15.1
通讯作者:
Zheng Dayang
中科院分区:
文献类型:
--
作者:
Xu Peng;Xu Hao;Zheng Dayang
A novel dual-chamber photo-electrochemical oxidation system with Fe@Fe2O3/CF cathode was constructed by combining cathodic electro-Fenton and anodic photocatalysis for advanced treatment of biologically pretreated coal gasification wastewater (CGW). In the electro-Fenton cathode chamber, maximal chemical oxygen demand (COD) removal efficiency of 84.2% was arrived within 120 min at current density 10 mA/cm2, initial pH 3 and air flow rate 0.4 L/min for its initial concentration of 200 mg/L. Correspondingly, the effluent concentration of COD, BOD5, TOC and total phenols were 31.5, 3.9, 8.4 and 13.8 mg/L respectively, satisfying the stringent wastewater discharge standard. Moreover, the H2O2concentration change and wastewater acute toxicity were analyzed. Furthermore, a reasonable degradation mechanism was proposed based on the contribution of hydroxyl radicals (radical dotOH), and thus degradation pathway of phenol as typical pollutant was also speculated. The integrated system is confirmed to be high-effective and stable, and thus it is a potentially promising alternative for treatment toxic refractory industrial wastewater.
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影响因子:
15.1
作者:
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通讯作者:
Xinming Yu;Ming-hua Zhou;Gengbo Ren;Liang Ma
影响因子:
8.6
作者:
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通讯作者:
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影响因子:
22.1
作者:
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影响因子:
12.8
作者:
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通讯作者:
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影响因子:
9.2
作者:
L. Zhuang;Shungui Zhou;Yongtao Li;Tinglin Liu;Deyin Huang
通讯作者:
L. Zhuang;Shungui Zhou;Yongtao Li;Tinglin Liu;Deyin Huang