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    Please use this identifier to cite or link to this item: https://ir.cnu.edu.tw/handle/310902800/32150

    標題: Groundwater treatment by electrodialysis: gearing up toward green technology
    作者: Mendoza, Rose Marie O.
    Dalida, Maria Lourdes P.
    Kan, Chi-Chuan
    Wan, Meng-Wei
    貢獻者: Far Eastern Univ, Nicanor Reyes Med Fdn, Gen Educ Dept
    Univ Philippines, Dept Chem Engn, Natl Grad Sch Engn
    Chia Nan Univ Pharm & Sci, Inst Hot Spring Ind
    Chia Nan Univ Pharm & Sci, Dept Environm Resources Management
    關鍵字: Electrodialysis
    Groundwater treatment
    Removal efficiency
    Green technology
    Sustainable environment
    日期: 2018-09
    上傳時間: 2019-11-15 15:42:50 (UTC+8)
    摘要: The performance of a tailor-made electrodialysis stack to treat groundwater was conducted and evaluated. The stack was operated at optimum experimental conditions at applied voltage of 17 V, feed flow velocity of 0.033 L/s, and desalination time of 92 min. Major cation contents of the groundwater were Na, K, Ca, Mg, and As, and anions identified were Cl, NO3, SO4, HCO3, and PO4. The average cation and anion removal efficiency were 99.15% and 100%, respectively. The oxidation-reduction potential was also recorded to increase from -162.2 to 908 mV, indicating a shift from a highly reducing to a highly oxidizing reaction. Solution pH was also noted to drop from 7.62 to 5.80 with corresponding decrease in the conductivity of 1,388-36 mu S/cm. The product water can be classified as that of purified water and suitable for drinking and analytical purposes. Arsenic desalination kinetics was found to increase overtime at constant applied voltage and feed flow rate. Lower As feed concentration samples tend to achieve product water concentrations with maximum contaminant level lower than 10 ppb earlier than high feed concentration samples.
    link: http://dx.doi.org/10.5004/dwt.2018.22929
    關聯: Journal of Oleo Science, v.127, pp.178-183
    Appears in Collections:[觀光事業管理系(含溫泉所)] 期刊論文
    [環境資源管理系(所)] 期刊論文

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