title: Highly efficient degradation of ofloxacin by UV/Oxone/Co2+ oxidation process.
abstract: BACKGROUND
  In this study, UV/Oxone/Co(2+) oxidation process was applied to degradation of ofloxacin (OFL) in the presence of Co(2+) 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/Co(2+) processes were determined as follows: temperature = 25°C, pH = 5.0, [Oxone] = 0.6 mmol/L, [Oxone]/[Co(2+)] = 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/Co(2+) 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.
authors.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
authors.forename: Jianhui
authors.initials: J
authors.lastname: Sun
authors.forename: Mengke
authors.initials: M
authors.lastname: Song
authors.forename: Jinglan
authors.initials: J
authors.lastname: Feng
authors.forename: Yunqing
authors.initials: Y
authors.lastname: Pi
mesh_terms: D002244:Carbon / Q000737:chemistry; D002384:Catalysis; D003035:Cobalt / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D015242:Ofloxacin / Q000737:chemistry*; D016877:Oxidants; D010084:Oxidation-Reduction; D013464:Sulfuric Acids / Q000737:chemistry*; D013696:Temperature; D013997:Time Factors; D014466:Ultraviolet Rays; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D016877:Oxidants; D013464:Sulfuric Acids; D014874:Water Pollutants, Chemical; D003035:Cobalt; D002244:Carbon; D015242:Ofloxacin; C048813:potassium peroxymonosulfuric acid
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