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| Degradation of Antibiotic Sulfanilamide in Aqueous Solution via a Heterogeneous Fenton-like Reaction Catalyzed by Nano-Iron Oxides |
| Received:March 01, 2015 |
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| KeyWord:nano-iron oxides;heterogeneous Fenton-like reaction;sulfanilamide;degradation |
| Author Name | Affiliation | E-mail | | PEI Huan | School of Resources and Environment Science, Anhui Agricultural University, Hefei 230036, China | | | MAO Fei | School of Resources and Environment Science, Anhui Agricultural University, Hefei 230036, China | | | SI You-bin | School of Resources and Environment Science, Anhui Agricultural University, Hefei 230036, China | youbinsi@ahau.edu.cn |
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| Abstract: |
| Degradation of antibiotic sulfanilamide by a heterogeneous Fenton-like reaction was investigated using different nano- iron oxides(hematite, maghemite, magnetite, and ferrihydrite) as catalyst and hydrogen peroxide as oxidizing agent. The influences of initial sulfanilamide concentration, catalyst amount, H2O2 dose, and initial pH value on Fenton-like reaction were assessed. The optimal reaction conditions were 2 mg·L-1 of initial sulfanilamide concentration, 1 g·L-1 of catalyst, 30 mL·L-1 of H2O2, and 3.6 of initial pH, and the degradation rate of sulfanilamide could reach 99.27% within 72 h. The degradation process of sulfanilamide by the Fenton-like reaction was mainly oxidation of -NH2 group to the -NO2 via catalytic oxidation reaction. |
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