Removal of manganese(II) and iron(II) from synthetic groundwater using potassium permanganate

doi:10.1080/19443994.2013.819150

CNU IR > College of Sustainable Environment and Recreation > Dept. of Tourism Management > Periodical Articles > Item 310902800/28669

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

Title:	Removal of manganese(II) and iron(II) from synthetic groundwater using potassium permanganate
Authors:	Phatai, Piaw Wittayakun, Jatuporn Chen, Wen-Hsiang Futalan, Cybelle Morales Grisdanurak, Nurak Kan, Chi-Chuan
Contributors:	溫泉產業研究所
Keywords:	Oxidation Groundwater Iron Manganese Potassium permanganate
Date:	2014-09
Issue Date:	2015-05-06 21:24:33 (UTC+8)
Publisher:	Taylor & Francis Inc
Abstract:	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.
Relation:	Desalination and Water Treatment, v.52 n.31-33, pp.5942-5951
Appears in Collections:	[Dept. of Tourism Management] Periodical Articles

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