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      Surface cellulose modification with 2-aminomethylpyridine for copper, cobalt, nickel and zinc removal from aqueous solution

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          Abstract

          Cellulose was first modified with thionyl chloride, followed by reaction with 2-aminomethylpyridine to yield 6-(2'-aminomethylpyridine)-6-deoxycellulose. The resulting chemically-immobilized surface was characterized by elemental analysis, FTIR, 13C NMR and thermogravimetry. From 0.28% of nitrogen incorporated in the polysaccharide backbone, the amount of 0.10 ± 0.01 mmol of the proposed molecule was anchored per gram of the chemically modified cellulose. The available basic nitrogen centers attached to the covalent pendant chain bonded to the biopolymer skeleton were investigated for copper, cobalt, nickel and zinc adsorption from aqueous solution at room temperature. The newly synthesized biopolymer gave maximum sorption capacities of 0.100 ± 0.012, 0.093 ± 0.021, 0.074 ± 0.011 and 0.071 ± 0.019 mmol.g-1 for copper, cobalt, nickel and zinc cations, respectively, using the batchwise method, whose data was fitted to different sorption models, the best fit being obtained with the Langmuir model. The results suggested the use of this anchored biopolymer for cation removal from the environment.

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          Most cited references85

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          THE CONSTITUTION AND FUNDAMENTAL PROPERTIES OF SOLIDS AND LIQUIDS. PART I. SOLIDS.

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            A review of chitin and chitosan applications

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              Low-cost adsorbents for heavy metals uptake from contaminated water: a review.

              In this article, the technical feasibility of various low-cost adsorbents for heavy metal removal from contaminated water has been reviewed. Instead of using commercial activated carbon, researchers have worked on inexpensive materials, such as chitosan, zeolites, and other adsorbents, which have high adsorption capacity and are locally available. The results of their removal performance are compared to that of activated carbon and are presented in this study. It is evident from our literature survey of about 100 papers that low-cost adsorbents have demonstrated outstanding removal capabilities for certain metal ions as compared to activated carbon. Adsorbents that stand out for high adsorption capacities are chitosan (815, 273, 250 mg/g of Hg(2+), Cr(6+), and Cd(2+), respectively), zeolites (175 and 137 mg/g of Pb(2+) and Cd(2+), respectively), waste slurry (1030, 560, 540 mg/g of Pb(2+), Hg(2+), and Cr(6+), respectively), and lignin (1865 mg/g of Pb(2+)). These adsorbents are suitable for inorganic effluent treatment containing the metal ions mentioned previously. It is important to note that the adsorption capacities of the adsorbents presented in this paper vary, depending on the characteristics of the individual adsorbent, the extent of chemical modifications, and the concentration of adsorbate.
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                Author and article information

                Journal
                mr
                Materials Research
                Mat. Res.
                ABM, ABC, ABPol (São Carlos, SP, Brazil )
                1516-1439
                1980-5373
                February 2013
                : 16
                : 1
                : 79-84
                Affiliations
                [03] São Luiz MA orgnameFederal University of Maranhão - UFMA orgdiv1Chemistry Department Brazil
                [01] Teresina PI orgnameFederal University of Piauí - UFPI orgdiv1Interdisciplinary Laboratory for Advanced Materials - LIMAV Brazil edsonfilho@ 123456ufpi.edu.br
                [04] Campinas SP orgnameUniversity of Campinas - UNICAMP orgdiv1Institute of Chemistry Brazil
                [02] João Pessoa PB orgnameFederal University of Paraíba - UFPI orgdiv1Chemistry Department Brazil
                Article
                S1516-14392013000100010 S1516-1439(13)01600100010
                10.1590/S1516-14392013000100010
                7fe180e7-2353-4679-80cd-0de1d219e09e

                This work is licensed under a Creative Commons Attribution 4.0 International License.

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                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 58, Pages: 6
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                SciELO Brazil

                Self URI: Full text available only in PDF format (EN)
                Categories
                Regular Articles

                modification,2-aminometylpyridine,sorption,cations,cellulose

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