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The removal of lead ions of the aqueous solution by calcite with cotton morphology.

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Title: The removal of lead ions of the aqueous solution by calcite with cotton morphology.
Authors: Liu, Zexiang1, Shen, Qiuying, Zhang, Qiance1, Bian, Longchun2, Liu, Yongjun2 yjliu@ynu.edu.cn, Yuan, Bo2, Pan, Xuejun3, Jiang, Fengzhi fengzhij@ynu.edu.cn
Source: Journal of Materials Science. Aug2014, Vol. 49 Issue 15, p5334-5344. 11p. 2 Diagrams, 5 Charts, 6 Graphs.
Subjects: Adsorption capacity, Calcite analysis, Metal ions, Lead, Aqueous solutions, Thermodynamic state variables, Cotton research, Plant morphology
Abstract: In this paper, calcite with cotton morphology was prepared by co-precipitation method using cotton as templates. The effect of contact time, initial concentration, and solution temperature on calcite adsorption of lead ions was studied using a batch technique. The maximal adsorption capacity of calcite for Pb2+ was 3347.02 mg/g with a minimum contact time of 60 min. The pseudo-second-order kinetic model and Langmuir/Freundlich isotherms were proposed for modeling kinetic and equilibrium data, respectively. Thermodynamic parameters such as ∆G0, ∆H0, and ∆S0 were calculated to reveal the nature of sorption. Original calcite and the products of adsorption were characterized using SEM, TEM/EDAX, SAED, XRD, and BET. Dissolution of calcite followed by precipitation of lead carbonate was found to be the main operating mechanism for Pb2+ adsorption by calcite. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Materials Science is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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An: 95993790
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  Data: The removal of lead ions of the aqueous solution by calcite with cotton morphology.
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  Data: <searchLink fieldCode="AR" term="%22Liu%2C+Zexiang%22">Liu, Zexiang</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Shen%2C+Qiuying%22">Shen, Qiuying</searchLink><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Qiance%22">Zhang, Qiance</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Bian%2C+Longchun%22">Bian, Longchun</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Liu%2C+Yongjun%22">Liu, Yongjun</searchLink><relatesTo>2</relatesTo><i> yjliu@ynu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Yuan%2C+Bo%22">Yuan, Bo</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Pan%2C+Xuejun%22">Pan, Xuejun</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Jiang%2C+Fengzhi%22">Jiang, Fengzhi</searchLink><i> fengzhij@ynu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Materials+Science%22">Journal of Materials Science</searchLink>. Aug2014, Vol. 49 Issue 15, p5334-5344. 11p. 2 Diagrams, 5 Charts, 6 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Adsorption+capacity%22">Adsorption capacity</searchLink><br /><searchLink fieldCode="DE" term="%22Calcite+analysis%22">Calcite analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+ions%22">Metal ions</searchLink><br /><searchLink fieldCode="DE" term="%22Lead%22">Lead</searchLink><br /><searchLink fieldCode="DE" term="%22Aqueous+solutions%22">Aqueous solutions</searchLink><br /><searchLink fieldCode="DE" term="%22Thermodynamic+state+variables%22">Thermodynamic state variables</searchLink><br /><searchLink fieldCode="DE" term="%22Cotton+research%22">Cotton research</searchLink><br /><searchLink fieldCode="DE" term="%22Plant+morphology%22">Plant morphology</searchLink>
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  Label: Abstract
  Group: Ab
  Data: In this paper, calcite with cotton morphology was prepared by co-precipitation method using cotton as templates. The effect of contact time, initial concentration, and solution temperature on calcite adsorption of lead ions was studied using a batch technique. The maximal adsorption capacity of calcite for Pb2+ was 3347.02 mg/g with a minimum contact time of 60 min. The pseudo-second-order kinetic model and Langmuir/Freundlich isotherms were proposed for modeling kinetic and equilibrium data, respectively. Thermodynamic parameters such as ∆G0, ∆H0, and ∆S0 were calculated to reveal the nature of sorption. Original calcite and the products of adsorption were characterized using SEM, TEM/EDAX, SAED, XRD, and BET. Dissolution of calcite followed by precipitation of lead carbonate was found to be the main operating mechanism for Pb2+ adsorption by calcite. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Materials Science is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10853-014-8236-x
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      – Code: eng
        Text: English
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        PageCount: 11
        StartPage: 5334
    Subjects:
      – SubjectFull: Adsorption capacity
        Type: general
      – SubjectFull: Calcite analysis
        Type: general
      – SubjectFull: Metal ions
        Type: general
      – SubjectFull: Lead
        Type: general
      – SubjectFull: Aqueous solutions
        Type: general
      – SubjectFull: Thermodynamic state variables
        Type: general
      – SubjectFull: Cotton research
        Type: general
      – SubjectFull: Plant morphology
        Type: general
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      – TitleFull: The removal of lead ions of the aqueous solution by calcite with cotton morphology.
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            NameFull: Liu, Zexiang
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            NameFull: Bian, Longchun
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              M: 08
              Text: Aug2014
              Type: published
              Y: 2014
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