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Electrochemical Decolorization of a Rhodamine B using Dimensionally Stable Anode  

Kim, Dong Seog (Department of Environmental Science, Catholic University of Daegu)
Park, Young Seek (Division of Health Science, Daegu University)
Publication Information
Journal of Korean Society on Water Environment / v.23, no.3, 2007 , pp. 377-384 More about this Journal
Abstract
This study has carried out a performance of dimensionally stable anode for the purpose of decolorization of Rhodamine B (RhB) in water. Seven kinds of 1, 2 and 3 component electrodes were prepared by plating and thermal deposition, which were coated by the oxides of Pt, Ru, Ir, Sn-Sb, Ir-Sn-Sb, Ru-Sn-Sb and Ru-Sn-Ti on Ti metal surface, respectively. Performance for RhB decolorization of the seven electrodes lay in: Ru-Sn-Ti/Ti ${\fallingdotseq}$ Ru-Sn-Sb/Ti > Ir-Sn-Sb/Ti > Sn-Sb/Ti > Ru/Ti > Ir/Ti > Pt/Ti. The effects of electrode area and distance, electrolyte type and concentration, current density and pH were investigated on the decolorization of RhB using Ru-Sn-Ti/Ti electrode. Decolorization of RhB was not influenced by electrode area and distance largely, however wattage was influenced by them. NaCl was superior to the decolorization of RhB than $Na_2SO_4$. Optimum NaCl dosage and current density were 0.5 g/L and $0.183A/cm^2$, respectively. The pH effect of decolorization of RhB was not significant within the range of 3-7.
Keywords
Current density; Dimensionally stable anode; Electrode area; Electrolyte; pH;
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Times Cited By KSCI : 14  (Citation Analysis)
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