Volume 3, Issue 1 (2019)                   IQBQ 2019, 3(1): 3-28 | Back to browse issues page

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1- Department of Chemical Engineering, Faculty of Engineering, Arak University, Arak 38156-8-8349, Iran , ehsan1salehi@gmail.com
2- Department of Chemical Engineering, Faculty of Engineering, Arak University, Arak 38156-8-8349, Iran
3- Faculty of Petrochemical Engineering, Amirkabir University of Technology, Mahshahr, 6351-7-13178, Iran
Abstract:   (9654 Views)
Research Subject: In this paper, the adsorbents used to remove lead ion using adsorption operation have been reviewed.
Research Approach: The types of adsorbents used to remove lead ions, the modifications of adsorbents, adsorption conditions, isotherms and adsorption capacity of adsorbents have been investigated and compared based on the literature survey.
Main Results: Modification by impregnation of functional groups has a significant role in increasing the adsorption capacity. The pH of the solution plays an important role in the adsorption of lead ions and generally the adsorption capacity increases by increasing the pH of the solution. Langmuir's isotherm model has been more consistent with the equilibrium data. Among the reviewed adsorbents, carbon-based adsorbents such as activated carbon and graphen-oxide, modified by chemicals such as ammonium persulfate or polyamines, show higher adsorption. Also, biomasses due to their abundance and low prices have the potential to be used as lead ion adsorbents.
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Article Type: Analytic Review | Subject: Biomedical Enginireeng
Received: 2019/01/23 | Accepted: 2019/06/26 | Published: 2019/06/26

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