文章基本信息

标题：COMPARISON OF CHLORAMPHENICOL ADSORPTION BEHAVIOR ON BIOCHARS DERIVED FROM REED STRAWS AND MUNICIPAL SEWAGE SLUDGE
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作者：Hanyu Zhang ; Zhaowei Wang ; Xiaoyun Xie 等
期刊名称：Fresenius Environmental Bulletin
印刷版ISSN：1018-4619
出版年度：2017
卷号：26
期号：7
页码：4390-4399
语种：English
出版社：PSP Publishing
摘要：This work studied the adsorption of chloramphenicol (CAP) on two types of biochars derived from reed straw (RSB) and municipal sewage sludge (SSB), which were prepared by pyrolyzing at 500^. The biochars were characterized by scanning electron microscope, Fourier transform infrared spectroscopy, energy dispersive spectroscopy and Brunauer-Emmet-Teller. It revealed that RSB had a higher surface area (125.04 m2/g) than SSB (7.14 m2/g) and the adsorption of chloramphenicol on SSB (如=1.171 mg/g, 308.15K) was much less than that on RSB (^m=6.586 mg/g, 308.15K). Adsorption kinetics of CAP on biochars followed pseudo second order kinetic model, and adsorption isotherm fitted well with Sips model. The adsorption kinetics and thermodynamics demonstrated that the adsorption of CAP on two biochars squinted towards chemical adsorption. The k-k electro-donor-acceptor interaction between nitro group, benzene ring in CAP and % electron on the surface of biochars played an important role in the adsorption of CAP on biochars, while the hydrogen bonding interaction also contributed to the adsorption of CAP on biochars synchronously.
关键词：Chloramphenicol;Biochar;Adsorption kinetics;Adsorption thermodynamics;k-k electro-donor-acceptor