Adsorption and degradation of enrofloxacin, a veterinary antibiotic on natural zeolite
Adsorption and degradation of enrofloxacin, a veterinary antibiotic on natural zeolite
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DOI：
10.1016/j.jhazmat.2005.03.005
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发表时间：
2005-07-15
影响因子：
13.6
通讯作者：
Akmehmet-Balcioglu, I
中科院分区：
文献类型：
--
作者：
Ötker, HM;Akmehmet-Balcioglu, I
研究了天然沸石对兽用抗生素恩诺沙星的吸附及沸石的去污性能。在第一部分的研究中，pH值，温度和铵离子的存在下对吸附过程的影响进行了检查和评价的基础上的Langmuir和Freundlich等温线。恩诺沙星在天然沸石上的吸附被认为是高度依赖于pH值，表现出相应的增加，在pH值的降低。的正值的焓变表明吸附过程的吸热性质。铵离子的存在促进了恩诺沙星在该树脂上的吸附。在研究的第二部分中，红外（IR）光谱，和扫描电子显微镜（SEM）用于测定的改性沸石表面上的吸附和臭氧处理。结果发现，臭氧在足够的浓度在指定的时间内能够分解吸附在沸石上的恩诺沙星。(c)2005 Elsevier B.V.保留所有权利。
The adsorption of enrofloxacin, a veterinary antibiotic onto natural zeolite and further decontamination of zeolite was investigated in the present study. In the first part of the study, the effects of pH, temperature, and presence of ammonium ion on the adsorption process were examined and evaluated on the basis of Langmuir and Freundlich isotherms. Adsorption of enrofloxacin on natural zeolite was found to be highly pH dependent, exhibiting increases correspondent to decreases in pH. The positive value of enthalpy change showed the endothermic nature of adsorption processes. The presence of ammonium ion enhanced the adsorption of enrofloxacin. In the second part of the study, infrared (IR) spectroscopy, and scanning electron microscopy (SEM) were used for the determination of the modifications on the zeolite surfaces resulting from adsorption and ozone treatment. It was found that ozone at sufficient concentrations over specified time periods was able to decompose the enrofloxacin adsorbed on zeolite. (c) 2005 Elsevier B.V. All rights reserved.