Sorption of norfloxacin, sulfamerazine and oxytetracycline by KOH-modified biochar under single and ternary systems

文献类型： 外文期刊

第一作者： Luo, Jiwei

作者： Luo, Jiwei;Li, Xue;Ge, Chengjun;Yu, Huamei;Huang, Peng;Li, Jiatong;Luo, Jiwei;Ge, Chengjun;Muller, Karin;Tsang, Daniel C. W.;Bolan, Nanthi S.;Rinklebe, Jorg;Rinklebe, Jorg;Wang, Hailong;Wang, Hailong;Wang, Hailong

作者机构：

关键词： Sorption modeling; Antibiotics; Competitive sorption; Organic pollutant; Engineered biochar

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.642； 五年影响因子：9.237 ）

ISSN： 0960-8524

年卷期： 2018 年 263 卷

页码：

收录情况： SCI

摘要： Pollution of water by single antibiotics has been investigated in depth. However, in reality, a wide range of different contaminants is often mixed in the aquatic environment (contaminant cocktail). Here, single and competitive sorption dynamics of ionizable norfloxacin (NOR), sulfamerazine (SMR) and oxytetracycline (OTC) by both pristine and modified biochars were investigated. Sorption kinetics of the three antibiotics was faster in ternary-solute than single-solute system. Sorption efficiency was enhanced in the competitive system for NOR by the pristine biochar, and for OTC by both the pristine biochar and the modified biochar, while SMR sorption by the pristine biochar and the KOH-modified biochar was inhibited. Sorption was governed by electrostatic interactions, pi-pi EDA and H-bonds for antibiotics sorption by biochar. SMR and OTC sorption by biochar was influenced by cation bridging and surface complexation, respectively. This research finding will guide the development of treatment procedures for water polluted by multiple antibiotics.

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