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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/28669


    標題: Removal of manganese(II) and iron(II) from synthetic groundwater using potassium permanganate
    作者: Phatai, Piaw
    Wittayakun, Jatuporn
    Chen, Wen-Hsiang
    Futalan, Cybelle Morales
    Grisdanurak, Nurak
    Kan, Chi-Chuan
    貢獻者: 溫泉產業研究所
    關鍵字: Oxidation
    Groundwater
    Iron
    Manganese
    Potassium permanganate
    日期: 2014-09
    上傳時間: 2015-05-06 21:24:33 (UTC+8)
    出版者: Taylor & Francis Inc
    摘要: The removal of Mn2+ and Fe2+ from synthetic groundwater via oxidation using potassium permanganate was investigated. Batch jar tests were carried out under a constant pH of 8.0, where the effect of parameters such as the oxidant dose, presence of co-ions (Ca2+, Mg2+) and alum addition on the removal of Mn2+ and Fe2+ was examined. The partial removal of Mn2+ using aeration in single and dual metal system was 30.6% and 37.2%, respectively. The oxidant dose of 0.603 mg/L KMnO4 was the minimum amount needed to reduce Mn2+ below its maximum contaminant level. The presence of Fe2+ improved the removal of Mn2+ due to the autocatalytic effect of hydrous manganese-iron oxide, where its presence was confirmed by digital microscopy and EDX. The presence of Ca2+ and Mg2+ as well as the alum addition after oxidation has a negative effect on the removal of Mn2+. The removal mechanism of Mn2+ and Fe2+ was a combination of oxidation and adsorption or co-precipitation between the hydrous oxide and the dissolved metal ions.
    Appears in Collections:[觀光事業管理系(含溫泉所)] 期刊論文

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