Removal of Fluoride from Aqueous Solution Using Aluminum-Impregnated Chitosan Biopolymer

dc.creatorSwain, SK
dc.creatorDey, RK
dc.creatorIslam, M
dc.creatorPatel, RK
dc.creatorJha, U
dc.creatorPatnaik, T
dc.creatorAiroldi, C
dc.date2009
dc.date2014-11-19T10:22:41Z
dc.date2015-11-26T18:02:18Z
dc.date2014-11-19T10:22:41Z
dc.date2015-11-26T18:02:18Z
dc.date.accessioned2018-03-29T00:43:57Z
dc.date.available2018-03-29T00:43:57Z
dc.identifierSeparation Science And Technology. Taylor & Francis Inc, v. 44, n. 9, n. 2096, n. 2116, 2009.
dc.identifier0149-6395
dc.identifierWOS:000269792500012
dc.identifier10.1080/01496390902881212
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/70889
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/70889
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/70889
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1292191
dc.descriptionAluminum impregnated chitosan (AIC) was prepared and applied as an adsorbent for the removal of fluoride from aqueous solutions. The process involved two stages: (i) isolation of chitosan from chitin, (ii) impregnation of aluminum in isolated chitosan at fixed pH. SEM and EDS techniques were used to characterize the composition of adsorbent AIC. Dynamic adsorption experiments on AIC were carried out at various pH, contact times, adsorption dosages, and initial fluoride concentration to determine optimum adsorption properties. The experimental data were analyzed using two adsorption models, Langmuir and Freundlich, with the later system providing the best fit. Thermodynamic parameters showed the adsorption process as spontaneous and endothermic. The adsorption process follows first-order kinetics for which a mechanism has been proposed. Reusability of the AIC was tested up to four consecutive cycles. The desorption experiment showed 92% elution of adsorbed fluoride at a pH of 12. Finally, the performance of the adsorbent material was studied on field water samples collected from a fluorosis endemic-region.
dc.description44
dc.description9
dc.description2096
dc.description2116
dc.descriptionUGC, New Delhi [F.33-292/2007]
dc.descriptionUGC, New Delhi [F.33-292/2007]
dc.languageen
dc.publisherTaylor & Francis Inc
dc.publisherPhiladelphia
dc.publisherEUA
dc.relationSeparation Science And Technology
dc.relationSep. Sci. Technol.
dc.rightsfechado
dc.rightshttp://journalauthors.tandf.co.uk/permissions/reusingOwnWork.asp
dc.sourceWeb of Science
dc.subjectAdsorption
dc.subjectadsorption model
dc.subjectchitosan
dc.subjectfluoride
dc.subjectExchange-resin
dc.subjectIon-exchanger
dc.subjectAdsorption
dc.subjectDefluoridation
dc.subjectWater
dc.subjectEquilibrium
dc.subjectChitin
dc.subjectElectrodialysis
dc.subjectNanofiltration
dc.subjectChloride
dc.titleRemoval of Fluoride from Aqueous Solution Using Aluminum-Impregnated Chitosan Biopolymer
dc.typeArtículos de revistas


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