Removal of As(III) and As(V) in Aqueous Phases by Fe and Mn Oxides Coated Granular Activated Carbon

Title
Removal of As(III) and As(V) in Aqueous Phases by Fe and Mn Oxides Coated Granular Activated Carbon
Authors
이희용양중석최재영이승목
Keywords
비소제거; 산화; 입자활성탄; 흡착; Arsenic; Oxidation; GAC; Adsorption
Issue Date
2009-08
Publisher
大韓環境工學會誌; Journal of Korean Society of Environmental Engineers
Citation
VOL 31, NO 8, 613-620
Abstract
The objective of this study was to evaluate the efficiency of Fe and Mn oxides coated granular activated carbons (FMOCGs) for the removal of arsenite and arsenate by oxidation and adsorption mechanisms using surface characterization and batch adsorption experiments. Within four manufactured adsorbents, Fe and Mn contents of FMOCG-1 was the highest (178.12 mg Fe/g and 11.25 mg Mn/g). In kinetic results, As(III) was removed by oxidation and adsorption with FMOCGs. Removal of arsenic by FMOCGs increased as pH value of the solution decreased. The adsorption isotherm results were well fitted with Langmuir isotherm. Adsorption amount of As(V) onto FMOCGs was higher than that of As(III) and the maximum adsorption capacities of FMOCGs for As(III) and As(V) were 1.38~8.44 mg/g and 2.91~9.63 mg/g, respectively.
URI
http://pubs.kist.re.kr/handle/201004/36219
ISSN
1225-5025
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KIST Publication > Article
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