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      Enhanced adsorptive composite foams for copper (II) removal utilising bio-renewable polyisoprene-functionalised carbon derived from coconut shell waste

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          Abstract

          A bio -renewable polyisoprene obtained from Hevea Brasiliensis was used to produce functionalised carbon composite foam as an adsorbent for heavy metal ions. Functionalised carbon materials (C-SO 3H, C-COOH, or C-NH 2) derived from coconut shell waste were prepared via a hydrothermal treatment. Scanning electron microscopy images showed that the functionalised carbon particles had spherical shapes with rough surfaces. X-ray photoelectron spectroscopy confirmed that the functional groups were successfully functionalised over the carbon surface. The foaming process allowed for the addition of carbon (up to seven parts per hundred of rubber) to the high ammonia natural rubber latex. The composite foams had open pore structures with good dispersion of the functionalised carbon. The foam performance on copper ion adsorption has been investigated with regard to their functional group and adsorption conditions. The carbon foams achieved maximum Cu(II) adsorption at 56.5 \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\text{mg g}}_{\text{foam}}^{-1}$$\end{document} for C-SO 3H, 55.7 \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\text{mg g}}_{\text{foam}}^{-1}$$\end{document} for C-COOH, and 41.9 \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\text{mg g}}_{\text{foam}}^{-1}$$\end{document} for C-NH 2, and the adsorption behaviour followed a pseudo-second order kinetics model.

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          Most cited references 38

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          Removal of heavy metal ions from wastewaters: a review.

           Qi Wang,  F Fu (2011)
          Heavy metal pollution has become one of the most serious environmental problems today. The treatment of heavy metals is of special concern due to their recalcitrance and persistence in the environment. In recent years, various methods for heavy metal removal from wastewater have been extensively studied. This paper reviews the current methods that have been used to treat heavy metal wastewater and evaluates these techniques. These technologies include chemical precipitation, ion-exchange, adsorption, membrane filtration, coagulation-flocculation, flotation and electrochemical methods. About 185 published studies (1988-2010) are reviewed in this paper. It is evident from the literature survey articles that ion-exchange, adsorption and membrane filtration are the most frequently studied for the treatment of heavy metal wastewater. Copyright © 2010 Elsevier Ltd. All rights reserved.
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            Adsorption of chromium(VI) from aqueous solution by activated carbon derived from olive bagasse and applicability of different adsorption models

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              Removal of Cu(II), Zn(II) and Co(II) ions from aqueous solutions by adsorption onto natural bentonite

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                Author and article information

                Contributors
                ksuwadee@tu.ac.th
                Journal
                Sci Rep
                Sci Rep
                Scientific Reports
                Nature Publishing Group UK (London )
                2045-2322
                14 January 2021
                14 January 2021
                2021
                : 11
                Affiliations
                [1 ]GRID grid.412434.4, ISNI 0000 0004 1937 1127, Department of Chemistry, Faculty of Science and Technology, , Thammasat University, ; Pathumthani, 12120 Thailand
                [2 ]GRID grid.412434.4, ISNI 0000 0004 1937 1127, Bioenergy and Biochemical Refinery Technology Program, Faculty of Science and Technology, , Thammasat University, ; Pathumthani, 12120 Thailand
                [3 ]GRID grid.472685.a, Synchrotron Light Research Institute (Public Organization), ; 111 University Avenue, Muang District, Nakhon Ratchasima, 3000 Thailand
                [4 ]GRID grid.7922.e, ISNI 0000 0001 0244 7875, Department of Chemical Technology, Faculty of Science, , Chulalongkorn University, ; 254 Phyathai Road, Wangmai, Patumwan, Bangkok, 10330 Thailand
                [5 ]GRID grid.257016.7, ISNI 0000 0001 0673 6172, Institute of Regional Innovation, , Hirosaki University, ; Aomori, 030-0813 Japan
                [6 ]GRID grid.7922.e, ISNI 0000 0001 0244 7875, Office of University Research Affairs, , Chulalongkorn University, ; 254 Phyathai Road, Wangmai, Patumwan, Bangkok, 10330 Thailand
                [7 ]FRST, Academy of Science, Office of the Royal Society, Sanam Suea Pa, Khet Dusit, Bangkok, 10300 Thailand
                Article
                80789
                10.1038/s41598-020-80789-x
                7809016
                © The Author(s) 2021

                Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

                Funding
                Funded by: FundRef http://dx.doi.org/10.13039/501100004396, Thailand Research Fund;
                Award ID: DPG6080001
                Award ID: DPG6080001
                Award Recipient :
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                © The Author(s) 2021

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                soft materials, nanocomposites

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