Complete Cu removal through Fe(II) mediated decoupling of CuEDTA complexes from simulated industrial wastewater with simultaneous precipitation
學年 110
學期 1
出版（發表）日期 2021-08-01
作品名稱 Complete Cu removal through Fe(II) mediated decoupling of CuEDTA complexes from simulated industrial wastewater with simultaneous precipitation
作品名稱（其他語言）
著者 Vinh Ya; Yao-Hung Chen; Yi-Hsuan Chou; Natacha Martin; Kwang-Ho Choo; Naresh Mameda; Pongsak (Lek) Noophan; Chi-Wang Li
單位
出版者
著錄名稱、卷期、頁數 Environmental Technology & Innovation 23, 101726
摘要 A complete removal of Cu from CuEDTA complexes by replacement/precipitation reactions using ferrous ions was realized. The effects of pH, iron dosage and reactions time on Cu removal were evaluated. The results were explained with the aid of chemical equilibrium modeling. Fe(III) ions effectively liberate Cu(II) ions from CuEDTA complexes by the replacement reaction at an acidic pH region, but the precipitation of ferric hydroxides at elevated pH levels renders a negative effect on Cu removal. In contrast, Fe(II) ions replace Cu(II) effectively at an alkaline pH region, where both replacement and precipitation of Cu can take place simultaneously. Cu removal was enhanced and was independent of the precipitation time when Fe(II) was dosed instead of Fe(III), reaching 100% removal of Cu at Cu:EDTA:Fe molar ratio of 1:1:5. The treatment efficacy of the replacement/precipitation processes for Cu removal followed by Fenton process for COD removal was compared with that of Fenton process for COD removal followed by alkaline precipitation for Cu removal. A complete Cu removal was achieved by the former, whereas only 40%–66% of Cu was removed by the latter.
關鍵字 Copper;Ferric;Ferrous;Metal complex;Replacement;Precipitation
語言 en_US
ISSN
期刊性質 國外
收錄於 SCI
產學合作
通訊作者
審稿制度 否
國別 GBR
公開徵稿
出版型式 ,電子版
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機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/120937 )

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