Degradation of the antibiotic sulfamonomethoxine sodium in aqueous solution by photo-Fenton oxidation

作者：Sun JianHui; Feng JingLan^*; Shi ShaoHui; Pi YunQing; Song MengKe; Shi Yan

来源：Chinese Science Bulletin, 2012, 57(5): 558-564.

DOI：10.1007/s11434-011-4887-z

• sulfamonomethoxine sodium
• degradation
• photo-Fenton

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 mu mol/L and T=25 degrees 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 sulfamonomethoxine sodium.

• 出版日期2012-2
• 单位河南师范大学