淡江大學機構典藏:Item 987654321/55089
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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/55089


    Title: Recovery of copper and DCA from simulated micellar enhanced ultrafiltration (MEUF) waste stream
    Authors: Liu, Chuan-kun;Li, Chi-wang
    Contributors: 淡江大學水資源及環境工程學系
    Keywords: Metal recovery;MEUF waste;Surfactant;Electroplating
    Date: 2009-11
    Issue Date: 2011-08-11 10:10:54 (UTC+8)
    Publisher: Canakkale: World Academy of Science, Engineering and Technology (W A S E T)
    Abstract: Simultaneous recovery of copper and DCA from simulated MEUF concentrated stream was investigated. Effects of surfactant (DCA) and metal (copper) concentrations, surfactant to metal molar ratio (S/M ratio), electroplating voltage, EDTA concentration, solution pH, and salt concentration on metal recovery and current efficiency were studied. Electric voltage of-0.5 V was shown to be optimum operation condition in terms of Cu recovery, current efficiency, and surfactant recovery. Increasing Cu recovery and current efficiency were observed with increases of Cu concentration while keeping concentration of DCA constant. However, increasing both Cu and DCA concentration while keeping S/M ratio constant at 2.5 showed detrimental effect on Cu recovery at DCA concentration higher than 15 mM. Cu recovery decreases with increasing pH while current efficiency showed an opposite trend. It is believed that conductivity is the main cause for discrepancy of Cu recovery and current efficiency observed at different pH. Finally, it was shown that EDTA had adverse effect on both Cu recovery and current efficiency while addition of NaCl salt had negative impact on current efficiency at concentration higher than 8000 mg/L.
    Relation: World Academy of Science, Engineering and Technology 59, pp.92-97
    Appears in Collections:[Graduate Institute & Department of Water Resources and Environmental Engineering] Journal Article

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