Degradation of the antibiotic sulfamonomethoxine sodium in aqueous solution by photo-Fenton oxidationReportar como inadecuado




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Chinese Science Bulletin

, Volume 57, Issue 5, pp 558–564

First Online: 21 January 2012Received: 27 December 2010Accepted: 05 July 2011

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, Fe 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, Fe= 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.

Keywordssulfamonomethoxine sodium degradation photo-Fenton This article is published with open access at Springerlink.com

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Autor: JianHui Sun - JingLan Feng - ShaoHui Shi - YunQing Pi - MengKe Song - Yan Shi

Fuente: https://link.springer.com/article/10.1007/s11434-011-4887-z







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