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张晖实验室研究生王哲的论文在SEPARATION AND PURIFICATION TECHNOLOGY 刊出
发布时间:2018-12-04 13:02:50     发布者:易真     浏览次数:

标题:Removal of COD from landfill leachate by advanced Fenton process combined with electrolysis

作者: Wang, Z (Wang, Zhe); Li, JB (Li, Jiangbo); Tan, WH (Tan, Weihua); Wu, XG (Wu, Xiaogang); Lin, H (Lin, Heng); Zhang, H (Zhang, Hui)

来源出版物:SEPARATION AND PURIFICATION TECHNOLOGY 卷:208  期:SI 页码: 3-11 DOI10.1016/j.seppur.2018.06.048   出版年:JAN 8 2019

摘要:Zero valent iron (ZVI) was used as the iron source for the advanced Fenton treatment of landfill leachate in an electrochemical cell. In this process, Fe-0 was dissolved from the surface of ZVI powder and then the generated Fe2+ would activate the added H2O2 to produce hydroxyl radical ((OH)-O-center dot), which is a strong oxidant and can lead to the removal of COD from landfill leachate. The effect of initial pH, H2O2 dosage, Fe-0 dosage, current density and inter-electrode gap on the COD removal of landfill leachate was investigated. The results indicate that COD removal followed pseudo-second order kinetic model. The rate constant and efficiency of COD removal increased with Fe-0 dosage being increased from 0.524 to 1.745 g/L, but decreased when initial pH rose from 2 to 4. The optimal conditions of H2O2 dosage, current density and inter-electrode gap were determined to be 0.187 mol/L, 20.6 mA/cm(2) and 1.8 cm, respectively. The humic acid-like organics in the leachate were effectively degraded and over 70% of COD could be removed from the leachate, showing high efficiency of the electro-advanced Fenton process.

入藏号:WOS:000449136400002

文献类型:Article

语种:English

作者关键词: Landfill leachate; Advanced Fenton; Zero-valent iron; Electrochemical; COD removal

通讯作者地址:Zhang, H (reprint author), Wuhan Univ, Hubei Environm Remediat Mat Engn Technol Res Ctr, Dept Environm Sci & Engn, Wuhan 430079, Hubei, Peoples R China.

电子邮件地址: eeng@whu.edu.cn

地址:

[Wang, Zhe; Li, Jiangbo; Tan, Weihua; Wu, Xiaogang; Lin, Heng; Zhang, Hui] Wuhan Univ, Hubei Environm Remediat Mat Engn Technol Res Ctr, Dept Environm Sci & Engn, Wuhan 430079, Hubei, Peoples R China.
[Wu, Xiaogang] Yangtze Univ, Sch Urban Construct, Jingzhou 434023, Peoples R China.

影响因子:3.927


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