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KMID : 1024520090180010049
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Journal of the Environmental Sciences
2009 Volume.18 No. 1 p.49 ~ p.60
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A Study on the Preparation of the Dimensionally Stable Anode(DSA) with High Generation Rate of Oxidants(I)
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Kim Dong-Seog
Park Young-Seek
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Abstract
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Fabrication and oxidants formation of 1 and 2 component metal oxide electrode, which is known to be so effective to destruct non-biodegradable organics in wastewater, were studied. Five electrode materials (Ru, Pt, Sn, Sb and Gd) were used for the 1 and 2 component electrode. The metal oxide electrode was prepared by coating the electrode material on the surface of the titanium mesh and then thermal oxidation at for 1 h. The removed RhB per 2 min and unit W for one component electrode decreased in the following sequences: Ru/Ti>Sb/Ti>Pt/Ti>Gd/Ti>Sn/Ti. The concentration of oxidants generated in 1 and 2 component electrodes was in the order of: > free Cl>>. OH radical was not generated from in entire one and two component electrodes. RhB degradation rate and generated oxidants of the Ru-Sn=9:1 electrode was higher than that of the two component electrode. The exact relationship between the removal of RhB and the generated oxidants concentration was not obvious. However, it was assumed that electrode with high RhB decolorization had high oxidant concentration.
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KEYWORD
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Electrochemical oxidation, DSA, Anode material, Oxidants, Dye
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