Highly efficient degradation of ofloxacin by UV/Oxone/Co2+ oxidation process |
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Authors: | Jianhui Sun Mengke Song Jinglan Feng Yunqing Pi |
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Affiliation: | College of Chemistry and Environmental Sciences, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang, Henan, People's Republic of China. sunjh_hj@yahoo.com.cn |
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Abstract: | Introduction In this study, UV/Oxone/Co2+ oxidation process was applied to degradation of ofloxacin (OFL) in the presence of Co2+ as the catalytic and Oxone as the oxidant. The operation parameters including pH, temperature, dosages of reagents, and reaction time were studied in detail. Results The results showed that the optimum conditions for the UV/Oxone/Co2+ processes were determined as follows: temperature?=?25°C, pH?=?5.0, [Oxone]?=?0.6?mmol/L, [Oxone]/[Co2+]?=?1,000, and reaction time?=?60?min. Under these conditions, 100% of the OFL degraded. The kinetics was also studied, and degradation of OFL by the UV/Oxone/Co2+ process could be described by first-order kinetics. Conclusions Mineralization of the process was investigated by measuring the total organic carbon (TOC), and the TOC decreased by 87.0% after 60?min. This process could be used as a pretreatment method for wastewater containing ofloxacin. |
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