Biosorption of heavy metals using rice milling by-products. Characterisation and application for removal of metals from aqueous effluents

dc.creatorTarley, CRT
dc.creatorArruda, MAZ
dc.date2004
dc.dateFEB
dc.date2014-11-15T22:01:56Z
dc.date2015-11-26T16:16:10Z
dc.date2014-11-15T22:01:56Z
dc.date2015-11-26T16:16:10Z
dc.date.accessioned2018-03-28T23:01:37Z
dc.date.available2018-03-28T23:01:37Z
dc.identifierChemosphere. Pergamon-elsevier Science Ltd, v. 54, n. 7, n. 987, n. 995, 2004.
dc.identifier0045-6535
dc.identifierWOS:000187802800022
dc.identifier10.1016/j.chemosphere.2003.09.001
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/55685
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/55685
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/55685
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1267503
dc.descriptionThe morphological characteristics as well as chemical composition of rice husks were evaluated by different techniques such as spectroscopy and thermogravimetry. The material, which is considered a by-product obtained from rice milling, was then investigated as a potential decontaminant of toxic heavy metals present in laboratory effluents. Studies using glass columns were carried out at room temperature employing 100 ml of synthetic solutions containing Cd(II) and Pb(11) at 100 mg l(-1) in order to study the effects of pH, flow rate and particle size on Cd(H) and Pb(11) adsorption. After establishing the optimised conditions, the potentiality of rice husks for removing Cd(II) and Pb(II) ions from 100 ml of laboratory effluent, presenting concentrations before treatment of 22 and 12 mg l(-1), respectively, was evaluated. The ability to take up other metals species, such as Al(111), Cu(II) and Zn(II), present in this effluent was also studied. According to the data obtained, under the optimised conditions (pH = 4.0, flow rate of 8.0 ml min(-1) and less than or equal to355 mum rice husk particle size), 30 g of husks were necessary to attain the permissible limits for effluent release, as recommend by the EPA, for those species evolved in this work (Al, Cd, Cu, Pb and Zn). (C) 2003 Elsevier Ltd. All rights reserved.
dc.description54
dc.description7
dc.description987
dc.description995
dc.languageen
dc.publisherPergamon-elsevier Science Ltd
dc.publisherOxford
dc.publisherInglaterra
dc.relationChemosphere
dc.relationChemosphere
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectrice husks
dc.subjecteffluent treatment
dc.subjectheavy metals
dc.subjectIndustrial Effluents
dc.subjectSilica-gel
dc.subjectIons
dc.subjectBiomass
dc.subjectCadmium
dc.subjectLead
dc.subjectDecontamination
dc.subjectAdsorption
dc.subjectChromium
dc.subjectChitosan
dc.titleBiosorption of heavy metals using rice milling by-products. Characterisation and application for removal of metals from aqueous effluents
dc.typeArtículos de revistas


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