淡江大學機構典藏:Item 987654321/119362
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    題名: Efficient Cu removal from CuEDTA complex-containing wastewater using electrochemically controlled sacrificial iron anode
    作者: Ya, Vinh;Martin, Natacha;Chou, Yi-Hsuan;Chen, Shiao-Shing;Choo, Kwang-Ho;Naddeo, Vincenzo;Le, Ngoc Chung;Li, Chi-Wang
    關鍵詞: Copper removal;Scrap iron;Electro-replacement;Electro-deposition;Direct reduction
    日期: 2020-10-09
    上傳時間: 2020-10-13 12:10:12 (UTC+8)
    摘要: In this study, an electro-replacement/precipitation/deposition/direct reduction (ERPDD) process with scrap iron packed in a Ti mesh cage as a sacrificial anode was investigated for the treatment of wastewater containing CuEDTA complexes. The ERPDD mechanisms were responsible for the removal of Cu from CuEDTA complexes and were verified by a series of experiments using either iron or carbon plates as anodes for the Cu-containing solutions with and without EDTA. A complete Cu removal was achieved with electrical current density applied (1.18-2.36 mA/cm2), whereas only 60% of the Cu was removed without electricity. Dissolved oxygen (DO) was found to have a significant impact on Cu removal. Aeration reduced Cu removal (i.e., only 60% of the Cu was removed), whereas complete Cu removal was achieved with negligible DO concentration under mechanical mixing and N2 purging conditions. Compared to chemical replacement/precipitation (CRP) process, the ERPDD was able to save approximately 60-75% of the total operational costs during the treatment of CuEDTA-containing wastewater, due to the electrochemically controlled dosing of inexpensive sacrificial scrap iron and additional removal mechanisms not found in the CRP process.
    關聯: Chemosphere, 128573
    DOI: 10.1016/j.chemosphere.2020.128573
    顯示於類別:[水資源及環境工程學系暨研究所] 期刊論文

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