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  • 标题:Amoxicillin degradation with electro-persulfate combined with H2O2 from aqueous solution using response surface methodology
  • 本地全文:下载
  • 作者:Maryam Meserghani ; Mahnaz Nikaeen ; Ahmad Jonidi Jafari
  • 期刊名称:Environmental Health Engineering and Management
  • 印刷版ISSN:2423-3765
  • 电子版ISSN:2423-4311
  • 出版年度:2020
  • 卷号:7
  • 期号:3
  • DOI:10.34172/EHEM.2020.24
  • 语种:English
  • 出版社:Kerman University of Medical Sciences
  • 摘要:Background: Discharging wastewaters containing antibiotic into the environment causes some adverse effects on the human health and other organisms. The present study investigated the efficiency of electro-persulfate combined with hydrogen peroxide (H2O2) process as a chemical oxidation in amoxicillin (AMX) degradation. Methods: Optimization of the significant operational independent variables was explored for removal of AMX. Central composite design (CCD) was employed as a statistical tool for experimental design. High-performance liquid chromatography (HPLC) was used for measuring AMX concentration. The most effective factors of the electro-persulfate and H2O2 on the removal efficiency of AMX such as initial concentration of AMX, initial pH, PS/H2O2 molar ratio, and the current density were measured. Results: The optimum conditions for electro-persulfate removal efficiency of AMX to reach the degradation efficiency of higher than 95.28 ± 2.64% at reaction time of 60 minutes were obtained at pH = 4.23, AMX concentration = 31.9 mmol/L, current density = 39 mA/cm2, and PS/H2O2 molar ratio = 0.82. AMX degradation was satisfactorily predicted by the quadratic model with high possibility and confidence level of 95%. The quadratic model had high regression coefficients (R2 = 0.9964 and R2adj = 0.9926), which was totally acceptable. The removal efficiency of AMX reduced from 87.3 ± 6.1 to 25.9 ± 9 as pH increased from 5.5 to 7. Conclusion: According to the results, the electro-persulfate and H2O2 process can be suggested as the most effective, high efficient, and in-situ chemical oxidation for degradation of AMX.
  • 关键词:Amoxicillin;Hydrogen peroxide;Oxidation-reduction;Antibiotic
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