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KMID : 1156220080340020175
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Journal of Environmental Health Sciences
2008 Volume.34 No. 2 p.175 ~ p.182
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Hydrogen Peroxide Generation of DSA for Electro-Fenton Reaction and Removal of Rhodamine B
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Kim Dong-Seog
Park Young-Seek
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Abstract
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This study investigates the optimal conditions for electrogenerated hydrogen peroxide production and the application of the electro-Fenton process using DSA electrodes. The influences of parameters for the hydrogen peroxide generation such as electrode materials, electrolyte concentration, current, pH, air flow rate and electrode distance were investigated using a laboratory scale batch reactor. The relative performance for hydrogen peroxide generation of each of the six electrodes is : Ru-Sn-Ti ＞ Ru-Sn-Sb ＞ Ru ＞ Ir ＞ Pt ＞ Sn-Sb. Optimum NaCl dosage, current and air flow rate were 2.0 g/l, 12.5 A and 2 l/min, respectively. When the pH is low, hydrogen peroxide concentration was high. Electrode distance dos not effect to a hydrogen peroxide generation. A complete color removal was obtained for RhB (200 ㎎/l) at the 8 min mark of the electro-Fenton process under optimum operation conditions of Fe2+ 0.105 g/l and 5.0 A. The electro-Fenton process increased initial reaction and decreased final reaction time. However the effect was not high.
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KEYWORD
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electrolysis, electro-Fenton, hydrogen peroxide, Fe²?, DSA(dimensionally stable anode)
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