Electrochemical Degradation of Rhodamine B over Ti/SnO2‐Sb Electrode. (1st April 2015) - Maharana, Dusmant
ABSTRACT: : Electrochemical degradation of rhodamine B (C28 H31 ClN2 O3 ) over Ti/SnO2 ‐Sb anode was investigated in a rectangular cell. The degradation reaction follows pseudo‐first‐order kinetics. The degradation efficiency of rhodamine B attained >90.0% after 20 minutes of electrolysis at initial concentrations of 5 to 200 mg/L at a constant current density of 20 mA/cm 2 with a 10 mmol/L Na2 SO4 supporting electrolyte solution. Rhodamine B (50 mg/L) degradation and total organic carbon (TOC) removal ratio achieved 99.9 and 86.7%, respectively, at the optimal conditions after 30 minutes of electrolysis. The results showed that the energy efficiency of rhodamine B (50 mg/L) degradation at the optimal current densities from 2 to 30 mA/cm 2 were 23.2 to 84.6 Wh/L, whereas the electrolysis time for 90% degradation of rhodamine B with Ti/SnO2 ‐Sb anode was 36.6 and 7.3 minutes, respectively. The electrochemical method can be an advisable option for the treatment of dyes such as rhodamine B in wastewater.