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Environmental Engineering Research 2009;14(2): 134-139. DOI: https://doi.org/10.4491/eer.2009.14.2.134
Removal Efficiency of Arsenic by Adsorbents having Different Type of Metal Oxides
Sang-Yoon Min1, Byeong-Kwon Kim1, Sun-Ju Park1, Yoon-Young Chang1, and Jae Kyu Yang2
1Department of Environmental Engineering, Kwangwoon University, Seoul 139-701, Korea
2Division of General Education, Kwangwoon University, Seoul 139-701, Korea
Corresponding Author: Jae Kyu Yang ,Tel: +82-2-940-5769, Fax: +82-2-917-5769, Email: jkyang@kw.ac.kr
Received: March 12, 2009;  Accepted: June 1, 2009.
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ABSTRACT
In this study, oxidation of As (III) as well as removal of total arsenic by adsorbents coated with single oxides or multi-oxides (Fe (III), Mn (IV), Al (III)) was investigated. In addition, multi-functional properties of adsorbents coated with multi-oxides were evaluated. Finally, application of activated carbon impregnated with Fe or Mn-oxides on the treatment of As (III) or As (V) was studied. As (V) adsorption results with adsorbents containing Fe and Al shows that adsorbents containing Fe show a greater removal of As (V) at pH 4 than at pH 7. In contrast adsorbents containing Al shows a favorable removal of As (V) at pH 7 than at pH 4. In case of iron sand, it has a negligible adsorption capacity for As (V) although it contains 217.9 g-Fe/kg-adsorbent. Oxidation result shows that manganese coated sand (MCS) has the greatest As (III) oxidation capacity among all metal oxides at pH 4. Oxidation efficiency of As (III) by IMCS (iron and manganese coated sand) was less than that by MCS. However the total removed amount of arsenic by IMCS was greater than that by MCS.
Keywords: Arsenic | Adsorption | Metal-oxide | Oxidation
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Removal of Arsenic from Aqueous Solution Using Hybrid Metal Oxide  2012 December;17(S1)
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