Novel Cu(II)–EDTA Decomplexation by Discharge Plasma Oxidation and Coupled Cu Removal by Alkaline Precipitation: Underneath Mechanisms

• Published in: Environmental science & technology Vol. 52; no. 14; pp. 7884 - 7891
• Main Authors: Wang, Tiecheng, Cao, Yang, Qu, Guangzhou, Sun, Qiuhong, Xia, Tianjiao, Guo, Xuetao, Jia, Hanzhong, Zhu, Lingyan
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 17.07.2018
• Subjects: Acetic acid; ammonium; Carbon; Chemical precipitation; Coordination compounds; Copper; cupric oxide; Discharge; Edetic acid; EDTA (chelating agent); Energy efficiency; Ethylenediaminetetraacetic acids; Fluorescence; Fourier transform infrared spectroscopy; Heavy metals; hydroxyl radicals; Intermediates; nitrates; Organic acids; Organic carbon; Organic chemistry; Oxidation; ozone; Plasma; Precipitates; singlet oxygen; superoxide anion; Total organic carbon; ultraviolet-visible spectroscopy; Water treatment

Strong complexation between heavy metals and organic complexing agents makes the heavy metals difficult to be removed by classical chemical precipitation. In this study, a novel decomplexation method was developed using discharge plasma oxidation, which was followed by alkaline precipitation to trea...