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Treatment of Cu-EDTA by using Photocatalytic Oxidation Process - Comparison between UV Lamp and Solar Light -  

Shin, In-Soo (Division of Civil and Environmental Engineering, Kwandong University)
Choi, Bong-Jong (Division of Civil and Environmental Engineering, Kwandong University)
Lee, Seung-Mok (Division of Civil and Environmental Engineering, Kwandong University)
Yang, Jae-Kyu (LG Environmental Strategy Institute)
Publication Information
Journal of Korean Society on Water Environment / v.21, no.1, 2005 , pp. 66-72 More about this Journal
Abstract
Effect of the pH, molar ratio of Cu(II)/EDTA, concentration of Cu(II)-EDTA and ionic strength on the photocatalytic oxidation(PCO) of Cu(II)-EDTA in solar light was studied in this work. Experimental results in this work were compared with previous results obtained with UV-lamp. In the kinetics, Cu(II)-EDTA decomposition was favorable below neutral pH. The removal of Cu(II) and DOC was favorable as $TiO_2$ dosage increased. The initial rate for the decomplexation of Cu(II)-EDTA linearly increased as the concentration of Cu(II)-EDTA increased. The removal of Cu(II) and DOC was not much affected by variation of ionic strength with $NaClO_4$ as a background ion while much reduction was observed in the presence of background ions having higher formal charges. The removal trend of Cu(II) and DOC with variation of ionic strength and concentration of Cu(II)-EDTA in solar light was similar with that in UV light. Variation of the molar ratio of Cu(II)/EDTA showed a negligible effect on the removal of both Cu(II) and DOC. However, removal of both Cu(II) and DOC was two-times greater than that previous results obtained with UV light.
Keywords
Cu(II)-EDTA; Solar light intensity; UV; Ionic strength; Photocatalysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 김근한, 신인수, 최봉종, 이승복, 양재규, $TiO_2$에 의한 Cu(II)-EDTA 흡착에서 음이온물질 및 pH 영향, 대한환경공학회지, 25(5), pp. 644-649 (2003)
2 윤경식, 광전기화학과 태양에너지의 변호, 화학공업과 기술, 6(3), pp.43-52 (1988)   PUBMED
3 Foster, N. S., Noble, R. D. and Koval, C. A., Reversible Photoreductive Deposition and Oxidative Dissolution of Copper Ions in Titanium Dioxide Aqueous Suspensions, Environ. Sci. Technol., 27(2), pp. 350-356 (1993)   DOI
4 신인수, 최봉종, 이승목, 양재규, $TiO_2$ 광촉매반응을 이용한 구리함유 폐수처리 연구, 대한환경공학회지, 25(10), pp.1225-1232 (2003)
5 Boston. J. R., The Photochemical Conversion and Storage of Solar Energy: An Historical Perspective, Solar Eng. Mat. Solar Cells, 38, pp. 543-554 (1995)   DOI   ScienceOn
6 오정무, 태양에너지 이용에 관한 현황 및 전망, 화학공학, 18(14), pp. 301-307 (1980)   PUBMED
7 Chang, W. and Lin, W. Y., Bactericidal Activity of $TiO_2$ Photocatalyst in Aqueous Media: Toward a Solar-Assisted Water Disinfection System, Environ. Sci. Technol., 28(5), pp. 934-938 (1994)   DOI   ScienceOn
8 Davis, A. P. and Green, D. L., Photocatalytic Oxidation of Cadmium-EDTA with Titanium Dioxide, Environ. Sci. Technol., 33(4), pp. 609-617 (1999)   DOI   ScienceOn
9 Riley, R. G., Zachara, J. M. and Wobber, F. J., Chemical Contaminants on DOE Lands and Selection of Contaminant Mixtures for Subsurface Science Research, U.S. Department of Energy, DOE/ER-0547T (1992)
10 Yang, J. K. and Davis, A. P., Photocatalytic Oxidation of Cu(II)-EDTA with Illuminated $TiO_2$: Kinetics, Environ. Sci. Technol., 34(17), pp. 3789-3795 (2000)   DOI   ScienceOn
11 Robero, A.V., Caprio, A., and Insola, R., Advanced Oxidation Processes(AOP) for Water Purification and Recovery, Catalysis Today, 53, pp. 51-59 (1999)   DOI   ScienceOn
12 Cho, I. H., Kim, H. Y. and Zoh, K. D., Detoxification of Trichlchloroethylene(TCE) using Solar Light/$TiO_2$ in a UV Concentrating Radiation System, J. Water Environment and Technology, 1(1), pp. 37-42 (2003)   DOI
13 Noguelra, R. F. and Jardin, W. F., Decontamination using Solar Light, Solar Energy, 56(5), pp. 471-477 (1996)   DOI   ScienceOn