期刊
ENVIRONMENTAL TECHNOLOGY
卷 40, 期 14, 页码 1862-1870出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/09593330.2018.1432694
关键词
Landfill leachate; microelectrolysis-Fenton; polyaluminum chloride; response surface methodology; excitation-emission matrices spectra
资金
- National Natural Science Foundation of China [51409024]
- Natural Science Foundation of Hunan Province [2017JJ3341]
- Science & Technology Project of Changsha [ZD1601058, ZD1601017, ZD1601009]
Landfill leachate was pretreated by chemical flocculation with polyaluminum chloride (PAC) as a flocculant, and subsequently purified by the microelectrolysis-Fenton (MEF) process. Response surface methodology was employed to optimize the MEF process, and the optimal conditions were initial pH 3.20, H2O2 concentration 3.57 g/L, and Fe-C dosage 104.52 g/L. The PAC coagulation combined with MEF processes obtained a superior decontamination performance, and the predicted chemical oxygen demand (COD) and humic acids (HA) removal were respectively 90.27% and 93.79%. The strong fluorescence peak at 425 nm and the trapping experiment showed that was generated during MEF, which had a strong oxidation ability to degrade organic recalcitrant pollutants. The ultraviolet-visible spectra and three-dimensional excitation-emission matrices spectra (3D-EEMs) indicated that PAC coagulation could preferentially remove protein-like substances, while the MEF process was effective in destructing organic recalcitrant pollutants, especially humic-like and fulvic-like substances.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据