Influence of the drying conditions of Sargassum sp alga on the bioadsorption of hexavalent chromium

dc.creatorRocha, SCS
dc.creatorCavalcante, JD
dc.creatorda Silva, MGC
dc.creatorPinho, CG
dc.date2006
dc.dateSEP
dc.date2014-11-16T00:32:18Z
dc.date2015-11-26T17:36:02Z
dc.date2014-11-16T00:32:18Z
dc.date2015-11-26T17:36:02Z
dc.date.accessioned2018-03-29T00:18:34Z
dc.date.available2018-03-29T00:18:34Z
dc.identifierEnvironmental Technology. Selper Ltd, Publications Div, v. 27, n. 9, n. 979, n. 990, 2006.
dc.identifier0959-3330
dc.identifierWOS:000241916300005
dc.identifier10.1080/09593332708618714
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/80427
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/80427
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/80427
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1285823
dc.descriptionIndustrial wastes containing synthetic organic compounds and heavy metals are among the most dangerous residues, whose growth has followed the increase in industrial activity. Heavy metals are readily assimilated into the food chain and therefore easily accumulated in the ecosystem. To remove heavy metals from aqueous solutions, marine algae may be used as adsorbents either in their natural form or after treatments by a cross-linking process to improve their mechanical resistance. Drying of biosorbents, such as marine algae, is mentioned in many previous works as a step preceding the adsorption/dessorption cycle. Concerning algae, drying of its fresh biomass allows for proper storage and enhances performance in the sorption of heavy metals. In this work, physical and morphological analyses of fresh and dried Sargassum sp. marine algae, harvested offshore Sao Sebastiao, Sao Paulo state, Brazil, were performed in order to assess the influence of drying conditions on the biosorption process. Chromium concentrations were also determined in different parts of the algal structure before and after the biosorption process. The drying promoted structural changes in the algae, like shrinkage and porosity reduction. It was also observed that the chromium retention was dependent on the structural arrangement of the alga parts, in which the leaf was the major biosorbent.
dc.description27
dc.description9
dc.description979
dc.description990
dc.languageen
dc.publisherSelper Ltd, Publications Div
dc.publisherLondon
dc.publisherInglaterra
dc.relationEnvironmental Technology
dc.relationEnviron. Technol.
dc.rightsfechado
dc.sourceWeb of Science
dc.subjectbiosorption
dc.subjectbiosorption by algae
dc.subjectalga drying
dc.subjectIon-exchange
dc.subjectMarine-algae
dc.subjectBiosorption
dc.subjectMetals
dc.subjectAdsorption
dc.subjectBiomass
dc.subjectProtons
dc.titleInfluence of the drying conditions of Sargassum sp alga on the bioadsorption of hexavalent chromium
dc.typeArtículos de revistas


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