SCI和EI收录∣中国化工学会会刊

›› 2015, Vol. 23 ›› Issue (10): 1698-1704.DOI: 10.1016/j.cjche.2015.08.030

• 能源、资源与环境技术 • 上一篇    下一篇

Adsorption and degradation of norfloxacin by a novel molecular imprinting magnetic Fenton-like catalyst

Mingjie Huang, Tao Zhou, XiaohuiWu, Juan Mao   

  1. School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
  • 收稿日期:2014-10-30 修回日期:2015-07-21 出版日期:2015-10-28 发布日期:2015-11-27
  • 通讯作者: Tao Zhou, XiaohuiWu
  • 基金资助:
    Supported by the National Natural Science Foundation of China (21407052), Key Project in the National Science & Technology Pillar Program during the Twelfth Five-year Plan Period (2012BAC02B04), Research Fund for the Doctoral Program of Higher Education of China (201201420087), SRF from ROCS and SEM, and the Fundamental Research Funds for the Central Universities (2014QN144).

Adsorption and degradation of norfloxacin by a novel molecular imprinting magnetic Fenton-like catalyst

Mingjie Huang, Tao Zhou, XiaohuiWu, Juan Mao   

  1. School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2014-10-30 Revised:2015-07-21 Online:2015-10-28 Published:2015-11-27
  • Supported by:
    Supported by the National Natural Science Foundation of China (21407052), Key Project in the National Science & Technology Pillar Program during the Twelfth Five-year Plan Period (2012BAC02B04), Research Fund for the Doctoral Program of Higher Education of China (201201420087), SRF from ROCS and SEM, and the Fundamental Research Funds for the Central Universities (2014QN144).

摘要: In this study, a novel magnetically separable adsorbent, molecular imprinting magnetic γ-Fe2O3/crosslinked chitosan composites (MIPs), were prepared by a microemulsion process. Adsorption and Fenton-like oxidative degradation of a model pharmaceutical pollutant norfloxacin (NOR) by using MIPs were investigated. Various characterization methodswere used to study the properties ofMIPs, and it is suggested that the hydroxyl groups are the main adsorption sites for NOR. MIPs present better selective adsorption for NOR than its reference antibiotic sulfadiazine. The NOR adsorption data can be well fitted by Langmuir isotherm model and pseudosecond- order kinetic model. The optimum pH range for NOR adsorption is 7-10. In addition, the MIP-catalyzed Fenton-like system (MIPs/H2O2) exhibits remarkably faster removal rate for NOR than the case of γ-Fe2O3/ H2O2. The result indicates that MIPs will be a good functional material in decontamination of pharmaceutical wastewaters since MIPs can be magnetically recycled after the treatment.

关键词: Fenton-like, Norfloxacin, Molecular imprinting, &gamma, -Fe2O3, Adsorption

Abstract: In this study, a novel magnetically separable adsorbent, molecular imprinting magnetic γ-Fe2O3/crosslinked chitosan composites (MIPs), were prepared by a microemulsion process. Adsorption and Fenton-like oxidative degradation of a model pharmaceutical pollutant norfloxacin (NOR) by using MIPs were investigated. Various characterization methodswere used to study the properties ofMIPs, and it is suggested that the hydroxyl groups are the main adsorption sites for NOR. MIPs present better selective adsorption for NOR than its reference antibiotic sulfadiazine. The NOR adsorption data can be well fitted by Langmuir isotherm model and pseudosecond- order kinetic model. The optimum pH range for NOR adsorption is 7-10. In addition, the MIP-catalyzed Fenton-like system (MIPs/H2O2) exhibits remarkably faster removal rate for NOR than the case of γ-Fe2O3/ H2O2. The result indicates that MIPs will be a good functional material in decontamination of pharmaceutical wastewaters since MIPs can be magnetically recycled after the treatment.

Key words: Fenton-like, Norfloxacin, Molecular imprinting, &gamma, -Fe2O3, Adsorption