高级搜索

吸附剂浓度对Zn(Ⅱ)和Cd(Ⅱ)在高岭土上吸附的影响

,  , 

downloadPDF

上一篇

下一篇

郭亚利, 严锦根, 侯万国. 吸附剂浓度对Zn(Ⅱ)和Cd(Ⅱ)在高岭土上吸附的影响[J]. 环境工程学报, 2014, 8(5): 1791-1796.
引用本文: 郭亚利, 严锦根, 侯万国. 吸附剂浓度对Zn(Ⅱ)和Cd(Ⅱ)在高岭土上吸附的影响[J]. 环境工程学报, 2014, 8(5): 1791-1796.
shu
Guo Yali, Yan Jingen, Hou Wanguo. Effect of sorbent concentration on Zn(Ⅱ) and Cd(Ⅱ) adsorption on kaolinite[J]. Chinese Journal of Environmental Engineering, 2014, 8(5): 1791-1796.
Citation: Guo Yali, Yan Jingen, Hou Wanguo. Effect of sorbent concentration on Zn(Ⅱ) and Cd(Ⅱ) adsorption on kaolinite[J]. Chinese Journal of Environmental Engineering, 2014, 8(5): 1791-1796.
shu

吸附剂浓度对Zn(Ⅱ)和Cd(Ⅱ)在高岭土上吸附的影响

  • 1.

    山东大学环境研究院, 济南 250100

  • 2.

    中石化胜利油田分公司孤东采油厂, 东营 257237

  • 3.

    山东大学胶体与界面化学教育部重点实验室, 济南 250100

  • 基金项目:

    国家自然科学基金资助项目（21173135）

    高等学校博士学科点专项科研基金（20110131130008）

  • 中图分类号: O647.3

Effect of sorbent concentration on Zn(Ⅱ) and Cd(Ⅱ) adsorption on kaolinite

  • 1.

    Environment Research Institute, Shandong University, Jinan 250100, China

  • 2.

    Gudong Oil Production Factory, Shengli Oilfield Company, SINOPEC, Dongying 257237, China

  • 3.

    Key Laboratory of Colloid & Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, China

  • Fund Project:

  • 摘要: 研究了吸附剂浓度（Cs）对Zn（Ⅱ）和Cd（Ⅱ）在高岭土上吸附的影响。结果表明，随Cs增大，吸附等温线下降，呈现出明显的吸附剂浓度效应（Cs-effect）。采用经典Langmuir和Freundlich吸附等温式对吸附数据进行拟合表明，在给定Cs下，Zn（Ⅱ）和Cd（Ⅱ）的吸附等温线分别符合Langmuir和Freundlich等温式；但这2个等温式不能描述或预测Cs-effect，模型参数与Cs有关，与模型理论预测相悖。为解释和描述固/液界面吸附中的Cs-effect，我们近期提出了表面组分活度（SCA）模型，并推导出了Langmuir-SCA和Freundlich-SCA等温式。采用SCA模型等温式对吸附数据进行拟合表明，Langmuir-SCA和Freundlich-SCA等温式可分别准确地描述Zn（Ⅱ）和Cd（Ⅱ）在高岭土上吸附的Cs-effect结果，证明SCA模型是合理的。
    Abstract: The effect of sorbent concentration (Cs) on the adsorptions of Zn(Ⅱ) and Cd(Ⅱ) on kaolinite was investigated by using a batch equilibration technique. An obvious Cs-effect was observed, i.e., the adsorption isotherms declined as Cs increased. The test data were simulated with the classical Langmuir and Freundlich isotherms, respectively. The results showed that the Zn(Ⅱ) and Cd(Ⅱ) adsorption isotherms could be adequately described using Langmuir and Freundlich model, respectively, for each given Cs. However, the two classical models could not predict the Cs-effect observed, and their parameters varied with Cs, which violates the model predictions. To explain the reasons for the Cs-effect or to describe the Cs-effect, we recently proposed a surface component activity (SCA) model. Two Cs-dependent isotherm equations, Langmuir-SCA and Freundlich-SCA isotherms, were derived according to the SCA model. The applicability of the Langmuir-SCA and Freundlich-SCA isotherms to fit the Cs-effect data was examined, and the results showed that they could accurately describe the adsorption behaviors of Zn(Ⅱ) and Cd(Ⅱ) on kaolinite, respectively.
  • 加载中
  • [1] Bhattacharyya K. G., Gupta S. S. Adsorption of a few heavy metals on natural and modified kaolinite and montmorillonite: A review. Advances in Colloid and Interface Science, 2008, 140(2): 114-131
    [2] Yavuz Ö., Altunkaynak Y., Güzel F. Removal of copper, nickel, cobalt and manganese from aqueous solution by kaolinite. Water Research, 2003, 37(4): 948-952
    [3] O'Connor D. J., Connolly J. P. The effect of concentration of adsorbing solids on the partition coefficient. Water Research, 1980, 14(10): 1517-1523
    [4] Voice T. C., Weber W. J. Sorbent concentration effects in liquid/solid partitioning. Environ. Sci. & Technol., 1985, 19(9): 789-796
    [5] DiToro D. M., Mahony J. D., Kirchgraber P. R., et al. Effects of nonreversibility, particle concentration, and ionic strength on heavy-metal sorption. Environ. Sci. & Technol., 1986, 20(1): 55-61
    [6] Pan G., Liss P. S. Metastable-equilibrium adsorption theory: I. Theoretical. Journal of Colloid and Interface Science, 1998, 201(1): 71-76
    [7] 潘刚. 亚稳平衡态吸附(MEA)理论—传统吸附热力学理论面临的挑战与发展. 环境科学学报, 2003, 23(2): 156-173 Pan G. Metastable equilibrium adsorption theory: A challenge and development to classical thermodynamic adsorption theories. Acta Scientiae Circumstantiae, 2003, 23(2): 156-173(in Chinese)
    [8] Helmy A. K., Ferreiro E. A., de Bussetti S. G. Effect of particle association on 2, 2'-bipyridyl adsorption onto kaolinite. Journal of Colloid and Interface Science, 2000, 225(2): 398-402
    [9] Chang T. W., Wang M. K. Assessment of sorbent/water ratio effect on adsorption using dimensional analysis and batch experiments. Chemosphere, 2002, 48(4): 419-426
    [10] Wu X. F., Hu Y. L., Zhao F., et al. Ion adsorption components in liquid/solid systems. Journal of Environmental Sciences, 2006, 18(6): 1167-1175
    [11] Fehse K. U., Borg H., Sorkau E., et al. Correcting the effect of the sorbent to solution ratio on sorption isotherms from batch tests with soils and sediments. Water, Air, & Soil Pollution, 2010, 210(1-4): 211-220
    [12] Zhao L. X., Hou W. G. The effect of sorbent concentration on the partition coefficient of pollutants between aqueous and particulate phases. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2012, 396: 29-34
    [13] Zhao L. X., Song S. E., Du N., et al. A sorbent concentration-dependent Langmuir isotherm. Acta Physico-Chimica Sinica, 2012, 28(12): 2905-2910
    [14] Zhao L. X., Song S. E., Du N., et al. A sorbent concentration-dependent Freundlich isotherm. Colloid and Polymer Science, 2013, 291(3): 541-550
    [15] Iraolagoitia X. L. R., Martini M. F. Ca2+ adsorption to lipid membranes and the effect of cholesterol in their composition. Colloids and Surfaces B: Biointerfaces, 2010, 76(1): 215-220
    [16] 赵芳, 吴晓芙, 张艳丽, 等. 固液相离子吸附体系中吸附剂浓度效应与Langmuir方程的适用性. 环境化学, 2007, 26(3):335-338 Zhao F., Wu X., Zhang Y., et al. Adsorbent effect and applicability of Langmuir equation for describing ion adsorption in liquid/solid systems. Environmental Chemistry, 2007, 26(3):335-338(in Chinese)
    [17] 徐丛, 李薇, 潘纲. Zn(Ⅱ)/FeOOH吸附体系的固体浓度效应. 物理化学学报, 2009, 25(9):1737-1742 Xu C., Li W., Pan G. Particle concentration effect on Zn(Ⅱ) adsorption at water goethite interfaces. Acta Physico-Chimica Sinica, 2009, 25(9):1737-1742 (in Chinese)
    [18] Arias F., Sen T. K. Removal of zinc metal ion (Zn2+) from its aqueous solution by kaolin clay mineral: A kinetic and equilibrium study. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2009, 348(1-3): 100-108
    [19] Sen T. K., Gomez D. Adsorption of zinc (Zn2+) from aqueous solution on natural bentonite. Desalination, 2011, 267(2-3): 286-294
    [20] Gupta S. S., Bhattacharyya K. G. Removal of Cd(Ⅱ) from aqueous solution by kaolinite, montmorillonite and their poly(oxo zirconium) and tetrabutylammonium derivatives. Journal of Hazardous Materials, 2006, 128(2-3): 247-257
    [21] Bhattacharyya K. G., Gupta S. S. Adsorptive accumulation of Cd(Ⅱ), Co(Ⅱ), Cu(Ⅱ), Pb(Ⅱ), and Ni(Ⅱ) from water on montmorillonite: Influence of acid activation. Journal of Colloid and Interface Science, 2007, 310(2): 411-424
    [22] Bhattacharyya K. G., Sen Gupta S. Influence of acid activation of kaolinite and montmorillonite on adsorptive removal of Cd(Ⅱ) from water. Industrial & Engineering Chemistry Research, 2007, 46(11): 3734-3742
    [23] Shahmohammadi-Kalalagh S., Babazadeh H., Nazemi A. Comparison of linear and nonlinear forms of isotherm models for Zn(Ⅱ) and Cu(Ⅱ) sorption on a kaolinite. Arabian Journal of Geosciences, 2013, DOI: 10.1007/s12517-013-1114-z
    [24] Shahmohammadi-Kalalagh S., Babazadeh H. Isotherms for the sorption of zinc and copper onto kaolinite: Comparison of various error functions. International Journal of Environmental Science and Technology, 2014, 11(1):111-118
  • 加载中
WeChat 点击查看大图
计量
  • 文章访问数:  1709
  • HTML全文浏览数:  1007
  • PDF下载数:  970
  • 施引文献:  0
出版历程
  • 收稿日期:  2013-12-17
  • 刊出日期:  2014-05-06
郭亚利, 严锦根, 侯万国. 吸附剂浓度对Zn(Ⅱ)和Cd(Ⅱ)在高岭土上吸附的影响[J]. 环境工程学报, 2014, 8(5): 1791-1796.
引用本文: 郭亚利, 严锦根, 侯万国. 吸附剂浓度对Zn(Ⅱ)和Cd(Ⅱ)在高岭土上吸附的影响[J]. 环境工程学报, 2014, 8(5): 1791-1796.
shu
Guo Yali, Yan Jingen, Hou Wanguo. Effect of sorbent concentration on Zn(Ⅱ) and Cd(Ⅱ) adsorption on kaolinite[J]. Chinese Journal of Environmental Engineering, 2014, 8(5): 1791-1796.
Citation: Guo Yali, Yan Jingen, Hou Wanguo. Effect of sorbent concentration on Zn(Ⅱ) and Cd(Ⅱ) adsorption on kaolinite[J]. Chinese Journal of Environmental Engineering, 2014, 8(5): 1791-1796.
shu

吸附剂浓度对Zn(Ⅱ)和Cd(Ⅱ)在高岭土上吸附的影响

  • 1. 山东大学环境研究院, 济南 250100
  • 2. 中石化胜利油田分公司孤东采油厂, 东营 257237
  • 3. 山东大学胶体与界面化学教育部重点实验室, 济南 250100
  • 收稿日期:  2013-12-17
基金项目:

国家自然科学基金资助项目（21173135）

高等学校博士学科点专项科研基金（20110131130008）

摘要: 研究了吸附剂浓度（Cs）对Zn（Ⅱ）和Cd（Ⅱ）在高岭土上吸附的影响。结果表明，随Cs增大，吸附等温线下降，呈现出明显的吸附剂浓度效应（Cs-effect）。采用经典Langmuir和Freundlich吸附等温式对吸附数据进行拟合表明，在给定Cs下，Zn（Ⅱ）和Cd（Ⅱ）的吸附等温线分别符合Langmuir和Freundlich等温式；但这2个等温式不能描述或预测Cs-effect，模型参数与Cs有关，与模型理论预测相悖。为解释和描述固/液界面吸附中的Cs-effect，我们近期提出了表面组分活度（SCA）模型，并推导出了Langmuir-SCA和Freundlich-SCA等温式。采用SCA模型等温式对吸附数据进行拟合表明，Langmuir-SCA和Freundlich-SCA等温式可分别准确地描述Zn（Ⅱ）和Cd（Ⅱ）在高岭土上吸附的Cs-effect结果，证明SCA模型是合理的。

English Abstract

    全文HTML

参考文献 (24)

返回顶部

目录

/

返回文章
返回

Copyright © 2019 中国科学院生态环境研究中心