Influence of metal ions on sulfonamide antibiotics biochemical behavior in fiber coexisting system

作     者：Lan Zhang Ruihuan Chen Yun Liu Youjun Deng Zhongpei Li Yuanhua Dong 

作者机构：Key Laboratory of Soil Environment and Pollution Remediation Institute of Soil Science Chinese Academy of Sciences University of Chinese Academy of Sciences Department of Soil and Crop Sciences Texas A&M University 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2019年第31卷第6期

页      面：267-276页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 083001[工学-环境科学] 07[理学] 08[工学] 070304[理学-物理化学(含∶化学物理)] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China (No. 21477137) the Frontier Fields during the Thirteenth Five-Year Plan Period of the Institute of Soil Science, Chinese Academy of Sciences (No. ISSASIP 1658) the State Key Research & Development Program of China (No. 2016YFC0501309) 

主　　题：Adsorption mechanism Co-biodegradation Luffa fiber White-rot fungus 

摘      要：Metal ions and fiber are common compounds in the livestock and poultry manure,which will affect the fate of organic compounds in aqueous environment. However,limited research has addressed the effect of coexisting metal ions and fiber on the biodegradation of sulfonamide antibiotics. Accordingly, a compositing study was performed to assess the effect of metal ions(Fe3+and Cu2+) on the biodegradation of sulfadimethoxine sodium salt(SDM) in the presence of fiber. The enhanced adsorption of SDM onto fiber in the presence of metal ions can be attributed to the π+–π electron donor acceptor(EDA) interaction. The microbial(Phanerochaete chrysosprium) could easily attach onto fiber forming attached microbial, and the degradation rates of SDM of immobilized bacteria in the presence of Fe3 +were 100%, which were significantly higher than those of free bacteria(45%). This study indicates that Fe3 +and fiber could enhance the biodegradation of SDM. Fiber acts as adsorbent, carrier, and substrate which enhanced the removal of SDM.