| 泥煤对镥的吸附特征 |
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| 引用本文： | 刘峙嵘,周利民,韦鹏,曾凯,陈玲美.泥煤对镥的吸附特征[J].江苏大学学报(自然科学版),2009,30(2). |
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| 作者姓名： | 刘峙嵘 周利民 韦鹏 曾凯 陈玲美 |
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| 作者单位： | 东华理工大学,应用化学系,江西,抚州,344000 |
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| 基金项目： | 教育部留学回国人员科研启动基金，东华理工大学博士启动基金，核资源与环境教育部重点实验室开放基金 |
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| 摘 要： | 静态条件下泥煤对溶液中Lu3+的吸附率较高,而且吸附速度较快,镥与泥煤能迅速发生表面络合反应达到平衡.pH值和离子强度对低浓度镥吸附动力学影响不大.5个经典动力学方程中Elovich方程能较优地描述泥煤吸附Lu3+的过程.泥煤吸附镥属于放热反应,且吸附过程自发不可逆,吸附焓变、熵变、自由能变均为负值.Freundlich吸附等温方程中的n值大于1,说明镥在泥煤上的吸附以单配位为主,且该吸附容易进行.颗粒泥煤的表面分形维数为2.837 5.
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| 关 键 词： | 泥煤 稀土 镥 吸附 分形维数 动力学 |
Adsorption of Lutetium on peat |
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| Liu Zhirong,Zhou Limin,Wei Peng,Zeng Kai,Chen Lingmei.Adsorption of Lutetium on peat[J].Journal of Jiangsu University:Natural Science Edition,2009,30(2). |
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| Authors: | Liu Zhirong Zhou Limin Wei Peng Zeng Kai Chen Lingmei |
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| Institution: | Department of Applied Chemistry;East China University of Technology;Fuzhou;Jiangxi 344000;China |
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| Abstract: | The adsorption of Lutetium on the peat is studied under static conditions.The adsorption ratio and adsorption rate for Lutetium onto peat are so high that the surface complex reaction reaches equilibrium.The adsorption of Lutetium is not pH and ion strength dependent.The kinetic process of adsorption can be described by the Elovich equation excellently among five kinds of classical kinetic models,and the adsorption isotherm fits both the Langmuir equation and Freundlich equation very well by means of regres... |
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| Keywords: | peat rare earth Lutetium adsorption fractal dimension kinetics |
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