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Removal of Refractory Organics and Heavy Metals in Landfill Leachate Concentrate by Peroxi-coagulation Process by Dun Liu; Ying Yuan; Yuquan Wei; Hao Zhang; Yanxiao Si; Fang Zhang is a Environmental Science article available to read on EtoBox.

What is Removal of Refractory Organics and Heavy Metals in Landfill Leachate Concentrate by Peroxi-coagulation Process about?

Landfill leachate is a complex effluent and it is difficult to deal with. Electrochemical methods have been considered as a promising alternative technology for treatment of landfill leachate with refractory organic contaminants and heavy metals. Peroxi-coagulation (PC) process with iron anode and modified graphite felt cathode was developed for efficient landfill leachate concentrate treatment. Compared to electro-Fenton (EF) and electrocoagulation (EC) processes, the PC process was more cost-effective due to the combined action of • OH oxidation and iron hydroxides coagulation. A maximal TOC removal of 77.2% ± 1.4% was obtained after 360 min at initial pH = 5.0 and current density of 10 mA/cm 2 . After the PC process, concentrations of all seven heavy metals in the final effluents were below the allowable emission limits given by the present regulatory standards. The method preference for heavy metal removal was PC > EC > EF. Based on the three-dimensional fluorescence spectroscopy coupled with regional integration analysis during the PC treatment, the florescence peaks of both humic acids and fulvic acids disappeared after treatment for 360 min. Decreasing trends were observed i

Who reads Removal of Refractory Organics and Heavy Metals in Landfill Leachate Concentrate by Peroxi-coagulation Process?

Author

Dun Liu; Ying Yuan; Yuquan Wei; Hao Zhang; Yanxiao Si; Fang Zhang

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Environmental Science (Physical Sciences)