| 四环素在CuY分子筛上的吸附行为研究 |
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| 引用本文： | 刘景亮,郑寿荣,许昭怡. 四环素在CuY分子筛上的吸附行为研究[J]. 无机化学学报, 2012, 28(3): 453-458 |
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| 作者姓名： | 刘景亮 郑寿荣 许昭怡 |
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| 作者单位： | 南京大学环境学院,污染控制与资源化研究国家重点实验室,江苏省机动车尾气污染控制重点实验室,南京210046 |
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| 基金项目： | 国家自然科学基金(No.21077050);科技部国际科技合作(No.2010DFA91910);江苏省自然科学基金(No.BK2010051)资助项目 |
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| 摘 要： | 采用离子交换法制备了不同交换量的CuY分子筛吸附剂。分别使用扫描电子显微镜(SEM)和X-射线衍射(XRD)对其进行表征,并研究了其对四环素的吸附性能。XRD结果表明,交换上的Cu2+不影响Y分子筛的晶型和骨架结构。四环素在CuY分子筛上吸附动力学符合伪二级动力学模型。吸附实验结果表明:四环素在CuY分子筛的吸附明显强于Y分子筛,并且其吸附量随着Cu2+交换量增加以及温度的升高而增大;溶液的pH值对CuY分子筛吸附四环素的影响较大,其吸附大小顺序为中性>碱性>酸性。
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| 关 键 词： | 四环素 CuY分子筛 吸附 |
Adsorption of Tetracycline on Cu Exchanged Y-Zeolite |
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| LIU Jing-Liang,ZHENG Shou-Rong and XU Zhao-Yi. Adsorption of Tetracycline on Cu Exchanged Y-Zeolite[J]. Chinese Journal of Inorganic Chemistry, 2012, 28(3): 453-458 |
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| Authors: | LIU Jing-Liang ZHENG Shou-Rong XU Zhao-Yi |
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| Affiliation: | State Key Laboratory of Pollution Control and Resource Reuse, and School of the Environment, Nanjing University, and Jiangsu Province Key Laboratory of Exhaust Pollution and Control Nanjing 210046, China,State Key Laboratory of Pollution Control and Resource Reuse, and School of the Environment, Nanjing University, and Jiangsu Province Key Laboratory of Exhaust Pollution and Control Nanjing 210046, China and State Key Laboratory of Pollution Control and Resource Reuse, and School of the Environment, Nanjing University, and Jiangsu Province Key Laboratory of Exhaust Pollution and Control Nanjing 210046, China |
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| Abstract: | The CuY-zeolites were prepared by ion-exchange method, and characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD). Then the adsorption of tetracycline on CuY-zeolites was investigated. The exchanged copper does not affect the crystalline phase and skeleton of the Y-zeolite. Adsorption kinetic of tetracycline on CuY-zeolite could be well described by the pseudo-second order kinetic model. Adsorption experimental results show that tetracycline adsorption on CuY-zeolite is much stronger than adsorption on Y-zeolite. Additionally, the adsorption increases with increasing copper content and temperature. The pH value of the solution significantly affects the tetracycline adsorption on CuY-zeolite, in an order of neutral > alkaline > acidic. |
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| Keywords: | tetracycline CuY-zeolite adsorption |
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