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    Please use this identifier to cite or link to this item: https://ir.fy.edu.tw:8080/ir/handle/987654321/3219


    Title: Preferential transport behaviors of ternary Cupric-Nickel-Zinc ion system through cation-exchange membrane with a complexing agent by dialysis
    Authors: Wang,Jau-Kai;Hsieh,Ching-Shieh
    Contributors: 輔英科技大學 應用化學及材料科學系
    Keywords: Preferential transport;Complexing agent;Dialysis
    Date: 2008-05
    Issue Date: 2010-09-28 16:53:35 (UTC+8)
    Abstract: Preferential transport behaviors of ternary metal ion system were studied in a stirred batch cation-exchange membrane dialyzer. Cu2+–Ni2+–Zn2+ system was chosen for investigation. Malonic acid, oxalic acid and citric acid were employed, respectively, as a complexing agent in order to enhance the discrepancy in transport fluxes of metal ions. The results show that the effective order of complexing agents is malonic acid > oxalic acid > citric acid. The stoichiometric ratio of complexing agent to metal ions and the pH value of the feed solution are the primary factors on the preferential transport behaviors of metal ions. The optimal dimensionless permeation flux ratio of PZn–Na/PNi–Na/PCu–Na is obtained about 5.3/3.6/0.7. On the basis of the Nernst–Planck equation and interface equilibrium, a theoretical model of the system is established. The predicted results obtained by theoretical model are in good agreement with the experimental results.
    Relation: Chemical Engineering Journal,Volume 138, Issues 1-3, Pages 103-110
    Appears in Collections:[應用化學及材料科學系] 期刊論文

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