Removal of copper ions from aqueous solution by tree fern
Removal of copper ions from aqueous solution by tree fern
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DOI：
10.1016/s0043-1354(03)00002-2
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发表时间：
2003-05-01
期刊：
影响因子：
12.8
通讯作者：
Ho, YS
中科院分区：
文献类型：
--
作者：
Ho, YS
利用农副产品树蕨对水溶液中的铜离子进行吸附去除。用Langmuir、Freundlich和Redlich-Peterson等温线对实验数据进行了分析。由Langmuir方程确定铜离子的平衡吸附容量，发现为11.7mg/g。基于准二级吸附机理，建立了一个批吸附模型，预测了铜离子初始浓度和树蕨投加量对吸附速率常数、平衡吸附量和初始吸附速率的影响。计算了各种热力学参数，如Δ G（0），Δ H（0）和Δ S（0）。铜离子/树蕨体系的热力学表明该过程是自发的吸热过程。(C)2003爱思唯尔科技有限公司版权所有。
Tree fern, an agricultural by-product, was used for the sorptive removal of copper ions from aqueous solution. The experimental data was analysed by Langmuir, Freundlich and Redlich-Peterson isotherms. The equilibrium sorption capacity of copper ions was determined from the Langmuir equation and found to be 11.7 mg/g. A batch sorption model, based on the assumption of the pseudo-second-order mechanism, was developed to predict the rate constant of sorption, the equilibrium sorption capacity and the initial sorption rate with the effect of initial copper ion concentration and the tree fern dose. Various thermodynamic parameters, such as DeltaG(0), DeltaH(0) and DeltaS(0), have been calculated. The thermodynamics of copper ion/tree fern system indicates spontaneous and endothermic nature of the process. (C) 2003 Elsevier Science Ltd. All rights reserved.