Abstract
In this study, photo-Fenton oxidation was applied to degradation of sulfamonomethoxine sodium (SMMS) in aqueous solution. The operation parameters of pH, temperature, and concentrations of H2O2, Fe2+ and SMMS were investigated. The optimum conditions for the photo-Fenton process were determined as follows: [SMMS]=4.53 mg/L, pH 4.0, [H2O2]=0.49 mmol/L, [Fe2+]= 19.51 μmol/L and T=25°C. Under these conditions 98.5% of the SMMS degraded. The kinetics were also studied, and degradation of SMMS by the photo-Fenton process could be described by first-order kinetics. The apparent activation energy was calculated as 23.95 kJ/mol. Mineralization of the process was investigated by measuring the chemical oxygen demand (COD), and the COD decreased by 99% after 120 min. This process could be used as a pretreatment method for wastewater containing sulfa-monomethoxine sodium.
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Sun, J., Feng, J., Shi, S. et al. Degradation of the antibiotic sulfamonomethoxine sodium in aqueous solution by photo-Fenton oxidation. Chin. Sci. Bull. 57, 558–564 (2012). https://doi.org/10.1007/s11434-011-4887-z
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DOI: https://doi.org/10.1007/s11434-011-4887-z