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http://dx.doi.org/10.15681/KSWE.2011.27.2.7

Formation of Oxidants and Removal of Dye Rhodamine B using PbO2 Electrode  

Park, Young-Seek (Faculty of Liberal Education, Daegu University)
Publication Information
Journal of Korean Society on Water Environment / v.27, no.2, 2011 , pp. 194-199 More about this Journal
Abstract
This study has been carried out to evaluate the performance of $PbO_2$ electrode for the purpose of degradation of N,N-Dimethyl-4-nitrosoaniline (RNO, indicator of OH radical), generation of ozone and decolorization of Rhodamine B (RhB) in water. The effect of the applied current (0.2~1.2 A), electrolyte type (NaCl, KCl and $Na_2SO_4$), electrolyte concentration (0.0~2.5 g/L) and solution pH (3~11) were evaluated. Experimental results showed that RhB and RNO removal were increased with the increase of current, NaCl dosage and decrease of pH. Ozone generation tendencies appeared with the almost similar to the RhB and RNO degradation, except of solution pH (Ozone generation was increased with increase of pH). Optimum current for RhB degradation and consumption of electric power was 1.0 A. The RhB degradation with Cl type electrolyte were higher than that with the sulfate type. Optimum NaCl dosage for RhB degradation was 1.0 g/L.
Keywords
Current density; Dye oxidation; Electrolyte; Hydroxyl radical; $PbO_2$ electrode;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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