An efficient method for tylosin removal from an aqueous solution by goethite modified straw mass
An efficient method for tylosin removal from an aqueous solution by goethite modified straw mass
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针铁矿改性秸秆从水溶液中高效去除泰乐菌素的方法
DOI：
10.1039/c6ra19172j
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发表时间：
2016-10
期刊：
影响因子：
3.9
通讯作者：
Youbiao Hu
中科院分区：
文献类型：
--
作者：
Yongyuan Yin;Xuetao Guo;Chen Yang;Liangmin Gao;Youbiao Hu
可再生农业残留物作为废物大量产生，它们的储存和管理造成了环境问题。同样，抗生素也会对生态系统和动植物的生长造成危害。泰洛菌素（tylosin， TYL）作为世界上广泛使用的抗生素之一，其环境风险日益受到人们的关注。为了寻找一种清洁有效的脱除TYL的方法，采用针铁矿对玉米秸秆（MS）进行了改性，并测定了天然形式和改性形式（MSF）对TYL的吸附能力。采用XRD、FTIR、XPS和SEM-EDS对MS和MSF进行了表征。系统地研究了TYL在MS和MSF上的吸附特性。结果表明，TYL在MSF上的吸附量明显高于MS，并且TYL在MS和MSF上的吸附动力学数据符合准二级动力学模型，吸附等温线数据符合线性模型。此外，TYL在MSF和MSF上的吸附热力学表明，高温有利于TYL在MSF和MSF上的吸附。此外，TYL在MS和MSF上的吸附受溶液pH和离子强度的影响。TYL在MS上的吸附机理主要包括静电相互作用和疏水相互作用，而静电相互作用、H键、疏水相互作用和表面络合作用是TYL在MSF上吸附的主要机理。
Renewable agricultural residues are produced in large quantities as waste, and their storage and management create environmental problems. Similarly, antibiotics could cause harm to the ecosystem and to the growth of plants and animals. As one of the widely used antibiotics in the world, the environmental risks of tylosin (TYL) are receiving increasing attention. In order to find a clean and effective method for TYL removal from an aqueous solution, maize straw (MS) is modified by goethite and the sorption capacity of the natural and modified forms (MSF) is determined for TYL removal. The characterisations of MS and MSF were carried out by XRD, FTIR, XPS and SEM-EDS. The characteristics of the sorption behavior of TYL on MS and MSF are systematically investigated. The results indicate that the sorption capacity of TYL on MSF is significantly higher than MS, and the sorption kinetics data of TYL on MS and MSF well fits the pseudo-second-order kinetics model and the sorption isotherms data well fits the linear model. Moreover, the sorption thermodynamics of TYL on MSF and MS indicate that a high temperature could favor the sorption of TYL on MS and MSF. In addition, the sorption of TYL on MS and MSF can be affected by pH and ionic strength of the solution. The sorption mechanisms of TYL on MS mainly involve electrostatic interactions and hydrophobic interactions, whereas electrostatic interactions, H bonding, hydrophobic interactions and surface complexation play a primal role in the sorption of TYL on MSF.
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影响因子：
15.1
作者：
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