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

被引：28
作者：
Huang, Mingjie [1 ]
Zhou, Tao [1 ]
Wu, Xiaohui [1 ]
Mao, Juan [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Environm Sci & Engn, Wuhan 430074, Peoples R China
来源：
CHINESE JOURNAL OF CHEMICAL ENGINEERING | 2015年 / 23卷 / 10期
基金：
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词：
Fenton-like; Norfloxacin; Molecular imprinting; gamma-Fe2O3; Adsorption; AQUEOUS-SOLUTION; REACTIVE DYE; ELECTRONIC-STRUCTURE; TANNIC-ACID; WASTE-WATER; CHITOSAN; REMOVAL; OXIDATION; BEHAVIOR; GAMMA-FE2O3;
D O I：
10.1016/j.cjche.2015.08.030
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
In this study, a novel magnetically separable adsorbent, molecular imprinting magnetic gamma-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 methods were used to study the properties of MIPs, 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 gamma-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. (C) 2015 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.
引用
收藏
页码：1698 / 1704
页数：7
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