| D301树脂吸附钼蓝的热力学与动力学(英文) |
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| 引用本文： | 赵中伟,许晓阳,陈星宇,霍广生,陈爱良,刘旭恒,徐慧. D301树脂吸附钼蓝的热力学与动力学(英文)[J]. 中国有色金属学会会刊, 2012, 22(3): 686-693. DOI: 10.1016/S1003-6326(11)61232-6 |
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| 作者姓名： | 赵中伟 许晓阳 陈星宇 霍广生 陈爱良 刘旭恒 徐慧 |
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| 作者单位： | 中南大学冶金科学与工程学院;稀有金属冶金及材料制备湖南省重点实验室;中南大学物理科学与技术学院 |
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| 基金项目： | Project(2007AA06Z129) supported by the High-tech Research and Development Program of China |
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| 摘 要： | 通过静态吸附实验,研究D301树脂对钼蓝的吸附热力学和动力学。结果表明:D301对钼蓝的吸附行为符合Freundlich等温方程;在不同温度下,D301吸附钼蓝的吸附焓变ΔH和吸附熵变ΔS均为正值,而吸附自由能变ΔG为负值,表明吸附是一个自发的、吸热过程,升温有利于吸附。动力学研究表明,此吸附过程符合双驱动模型,吸附过程主要受粒内扩散步骤控制,经拟合获得动力学总方程。
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| 关 键 词： | 镍钼矿 钼蓝 吸附 热力学 动力学 |
| 收稿时间： | 2011-01-21 |
Thermodynamics and kinetics of adsorption of molybdenum blue with D301 ion exchange resin |
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| ZHAO Zhong-wei,XU Xiao-yang,CHEN Xing-yu,HUO Guang-sheng,CHEN Ai-liang,LIU Xu-heng,XU Hui. Thermodynamics and kinetics of adsorption of molybdenum blue with D301 ion exchange resin[J]. Transactions of Nonferrous Metals Society of China, 2012, 22(3): 686-693. DOI: 10.1016/S1003-6326(11)61232-6 |
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| Authors: | ZHAO Zhong-wei XU Xiao-yang CHEN Xing-yu HUO Guang-sheng CHEN Ai-liang LIU Xu-heng XU Hui |
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| Affiliation: | 1.School of Metallurgical Science and Engineering,Central South University,Changsha 410083,China;2.Hunan Key Laboratory for Metallurgy and Material Processing of Rare Metals,Changsha 410083,China;3.School of Physical Science and Technology,Central South University,Changsha 410083,China |
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| Abstract: | The adsorption behavior of D301 for molybdenum blue was investigated.The thermodynamics parameters in adsorption process were calculated and the adsorption kinetics was studied.The experimental results show that the adsorption characteristic of D301 for molybdenum blue fits well with the Freundlich adsorption isotherm equation.In the adsorption process of D301 for molybdenum blue,both the enthalpy change ΔH and entropy change ΔS are positive,while the free energy change ΔG is negative when temperatures are in the range of 303-333 K.It is indicated that the adsorption is a spontaneous and endothermic process,and the elevated temperatures benefit to the adsorption.Kinetic studies show that the kinetic data are well described by double driving-force model,and the adsorption rate of molybdenum blue on D301 is controlled by the intraparticle diffusion during the adsorption process.The total kinetic equation is determined. |
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| Keywords: | Ni-Mo ore molybdenum blue adsorption thermodynamics kinetics |
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