Electro-Fenton 반응을 위한 불용성 전극의 과산화수소 생성과 Rhodamine B의 제거

Hydrogen Peroxide Generation of DSA for Electro-Fenton Reaction and Removal of Rhodamine B

This study is to investigate optimal conditions for the electrogenerated hydrogen peroxide production and the application of electro-Fenton process using DSA electrode. 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 laboratory scale batch reactor. Performance for hydrogen peroxide generation of the six electrodes lie in: 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 not affect to a hydrogen peroxide generation. A complete color removal was obtained for RhB (200 mg/l) at the 8 min of electro-Fenton process under optimum operation conditions of Fe²+ 0.105 g/l and 5.0A. Electro-Fenton process increased initial reaction and decreased final reaction time. However the effect was not high.