标题：Adsorption of tetracycline and sulfonamide antibiotics on amorphous nano-carbon作者：Yixiao Wu, Beidou Xi, Guangji Hu, Dihua Wang, Aimin Li, Weihao Zhang*, Lei Lu & Huijun Ding
来源出版物：Desalination and Water Treatment DOI：10.1080/19443994.2015.1135407 出版时间：13 Jan 2016
摘要：Antibiotics in the aquatic environment present potential risks to aquatic ecosystems. The adsorption of tetracycline (TC) and two sulfonamides (SAs), sulfadiazine (SD) and sulfamethoxazole (SMZ), from an aqueous solution of synthesized amorphous nano-carbon (ANC) was investigated. The ANC had a large adsorption capacity for TC (125.55 mg/g), SD (620.74 mg/g), and SMZ (332.21 mg/g). Several mechanisms (i.e. cation exchange, electrostatic interaction, hydrophobic effect, H-bonding, and π–π interactions) are potentially involved in the adsorption process. SAs were more strongly adsorbed on ANC because their molecules are smaller than those of TC. Adsorption nearly reached equilibrium within 2 h, with a removal rate of over 75%. Temperature and pH of the solution positively affected the adsorption process. Cations (Na+ and Ca2+) in solution had a slight effect on adsorption; Ca2+ inhibited adsorption, while Na+ promoted it. The adsorption process was fitted to pseudo-second-order kinetic and Freundlich models, which indicated that adsorption was both favorable and spontaneous. Fourier transform infrared spectroscopy revealed the interactions between antibiotics and ANC.
文献类型：Article
语种：English
作者关键词：Nanomaterials, Amorphous carbon, Tetracycline, Sulfonamide, Adsorption
通讯作者地址：Weihao Zhang, School of Resource and Environment Science, Wuhan University, Wuhan 430079, PR China
地址：
[Yixiao Wu, Dihua Wang,Weihao Zhang,Lei Lu & Huijun Ding]School of Resource and Environment Science, Wuhan University, Wuhan 430079, PR China.
[Beidou Xi]State Key Lab Environment Criteria & Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, PR China
[Guangji Hu]Environmental Engineering Program, University of Nortdhern British Columbia, Prince George, British Columbia V2N 4Z9, Canada
[Aimin Li]Hubei Environmental Monitoring Central Station, Wuhan 430072, PR China
[Weihao Zhang]Hubei Provincail Collaborative Innovation Center for Water Resources Security, Wuhan University, Wuhan 430072, PR China
ISSN：1944-3994
eISSN:1944-3986
影响因子（2014）：1.173
全文链接：http://www.tandfonline.com/doi/abs/10.1080/19443994.2015.1135407
