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Electrochemical Degradation of Rhodamine B Over Ti/SnO2-Sb Electrode

Electrochemical Degradation of Rhodamine B Over Ti/SnO2-Sb Electrode

Dusmant Maharana, Junfeng Niu, Ding Gao, Zesheng Xu, Jianghong Shi

Water Environ Res. 2015 Apr;87(4):304-11.

PMID: 26462074

Abstract:

Electrochemical degradation of rhodamine B (C28H31ClN2O3) 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/cm2 with a 10 mmol/L Na2SO4 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/cm2 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.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP81889	Rhodamine B		81-88-9	Price

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