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学科主题: Chemistry
题名: Removal Process of Cu2+ from Aqueous Solutions using Expanded Vermiculite
作者: Wang J. H.; Yan S. Y.; Fan Y. W.; Chen Z. Y.; Wang L.
关键词: Adsorption ; Copper ; Expanded vermiculite ; Kinetics
刊名: ASIAN JOURNAL OF CHEMISTRY
发表日期: 2012
卷: 24, 期:2, 页:611-614
收录类别: SCI
资助者: Foundation of Seed Project of Urumqi Science and Technology Bureau K101410009; Program of High Technology Research and Development Plan in Xinjiang Autonomous Region 200816121
摘要: The adsorption of Cu2+ from aqueous solution by expanded vermiculite was studied in batch mode. The sorption process was fast and equilibrium was achieved in ca. 50 min of contact. The effect of adsorbent dosage, contact time, temperature and initial Cu2+ concentration was investigated. The removal efficiency of Cu2+ using expanded vermiculite reached 99 % in low Cu2+ concentration. Experimental results indicated that a pseudo-second-order reaction model provided the best description of the data with a correlation coefficient 0.99 for different temperatures. The rate constants of adsorption by expanded vermiculite were defined by second-order kinetics of rate constant 0.0228, 80.878 and 120.280 g/mg/min(-1) at 298, 303 and 323 K, respectively. The results indicated that this system was an endothermic process.
内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/1642
Appears in Collections:材料物理与化学研究室_期刊论文

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作者单位: Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China;Xinjiang Key Lab Elect Informat Mat & Devices, Urumqi 830011, Peoples R China;Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Wang J. H.,Yan S. Y.,Fan Y. W.,et al. Removal Process of Cu2+ from Aqueous Solutions using Expanded Vermiculite[J]. ASIAN JOURNAL OF CHEMISTRY,2012,24(2):611-614.
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