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dc.contributor.authorBatista, A. P. S.
dc.contributor.authorRomao, L. P. C.
dc.contributor.authorArguelho, M. L. P. M.
dc.contributor.authorGarcia, C. A. B.
dc.contributor.authorAlves, J. P. H.
dc.contributor.authorPassos, E. A.
dc.contributor.authorRosa, André Henrique [UNESP]
dc.identifier.citationJournal of Hazardous Materials. Amsterdam: Elsevier B.V., v. 163, n. 2-3, p. 517-523, 2009.
dc.description.abstractThe physicochemical characteristics of three Brazilian pears were investigated using elemental analysis, scanning electron microscopy (SEM), X-ray diffractometry (XRD) and studies of Cr(III) biosorption based on adsorption isotherms. Adsorption of Cr(III) by in natura peat from Santo Amaro das Brotas (Sergipe State) was much greater than by peats from either Ribeirao Preto (São Paulo State) or Itabaiana (Sergipe State), with adsorption capacities (q) of 4.90 +/- 0.01, 1.70 +/- 0.01 and 1.40 +/- 0.01 mgg (1), respectively. Pre-treatments with HCl and NaOH + HCl reduced adsorption by the Santo Amaro clas Brotas peat, showing that adsorption efficiency was associated with the amount of organic matter present. Conversely, increase in the mineral content following pre-treatment increased adsorption of Cr(III) by the Ribeirao Preto and Itabaiana peats. Highest adsorption (retention >95.0%) was achieved at equilibrium pH 4.0 using the Santo Amaro das Brotas peat. Experimental data for the adsorption of Cr(III) from aqueous solution onto this peat were fitted to the Langmuir equation, from which an equilibrium adsorption capacity, q(max), of 5.60 mgg(-1) was obtained, which was close to the experimentally determined value. (c) 2008 Elsevier B.V. All rights reserved.en
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.publisherElsevier B.V.
dc.relation.ispartofJournal of Hazardous Materials
dc.sourceWeb of Science
dc.subjectChemical pre-treatmenten
dc.titleBiosorption of Cr(III) using in natura and chemically treated tropical peatsen
dcterms.rightsHolderElsevier B.V.
dc.contributor.institutionUniversidade Federal de Sergipe (UFS)
dc.contributor.institutionUniversidade Federal da Bahia (UFBA)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.description.affiliationUniv Fed Sergipe, Dept Quim, BR-49100000 Sao Cristovao, SE, Brazil
dc.description.affiliationUniversidade Federal da Bahia (UFBA), Inst Quim, BR-40170115 Salvador, BA, Brazil
dc.description.affiliationUniv Estadual Paulista, Dept Engn Ambiental, BR-18087180 Sorocaba, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Engn Ambiental, BR-18087180 Sorocaba, SP, Brazil
dc.rights.accessRightsAcesso restrito
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Ciência e Tecnologia, Sorocabapt
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