Comparative study of sulfamethazine degradation in visible light induced photo-Fenton and photo-Fenton-like systems
作者： Jia Wang , Tao Zhou , Juan Mao , Xiaohui Wu
DOI: 10.1016/J.JECE.2015.08.024
关键词:
摘要: Abstract A comparative study between the visible light induced photo-Fenton system (light/Fe 2+ /H 2 O , P-F) and like /S 8 2− P-FL) was carried out for degradation of antibiotic sulfamethazine (SMZ). It found that white-LED could enhance SMZ in both photochemical systems. The optimum dosage ratio [Fe ]:[Oxidant] determined as 1:10 two However, compared to P-F system, P-FL would consume five times catalyst/oxidant (i.e. 1 mM ]/10 mM [persulfate]) amount achieve approximately complete decomposition within 30 min. also effectively degrade at a broad pH range 2–5 (the 3–4). Furthermore, present common inorganic ions exhibited different effects on Although good mineralization detoxicity synthetic wastewater were observed systems, identifications released sulfate intermediates/product suggested pathways. Cleavage S N bond under hydroxyl radical ( OH) attacking dominant while (SO 4 − ) amine group benzene ring followed by cleavage C bonds heterocyclic main pathway system.
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