Lead removal from aqueous solution by natural and pretreated clinoptilolite:: Adsorption equilibrium and kinetics
Lead removal from aqueous solution by natural and pretreated clinoptilolite:: Adsorption equilibrium and kinetics
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DOI：
10.1016/j.jhazmat.2006.12.034
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发表时间：
2007-07-19
影响因子：
13.6
通讯作者：
Tosun, Ismail
中科院分区：
文献类型：
--
作者：
Gunay, Ahmet;Arslankaya, Ertan;Tosun, Ismail
研究了水溶液中的 Pb(II) 离子在斜发沸石上的吸附，以评估接触时间、初始浓度和斜发沸石预处理对 Pb(II) 去除的影响。通过四个双参数（Freundlich、Langmuir、Temkin 和 Dubinin-Radushkevich）、四个三参数（Redlich-Peterson、Sips、Toth 和 Khan）等温线模型以及非线性动力学模型（包括拟一级方程、拟二级方程和 Elovich 方程）对批次平衡试验获得的实验数据进行了分析 回归技术。在双参数等温线中，Temkin 等温线最能描述实验数据。三参数等温线具有较高的回归系数（>0.99）和较低的相对误差（
Adsorption of Pb(II) ions from aqueous solution onto clinoptilolite has been investigated to evaluate the effects of contact time, initial concentration and pretreatment of clinoptilolite on the removal of Pb(II). Experimental data obtained from batch equilibrium tests have been analyzed by four two-parameter (Freundlich, Langmuir, Temkin and Dubinin-Radushkevich), four three-parameter (Redlich-Peterson, Sips, Toth and Khan) isotherm models, and kinetic models including the pseudo-first order, the pseudo-second order and Elovich equations using nonlinear regression technique. Of the two-parameter isotherms, Temkin isotherm was the best to describe the experimental data. Three-parameter isotherms have higher regression coefficients (>0.99) and lower relative errors (