Superabsorbent hydrogrel based on modified polysaccharide for removal of Pb2+ and Cu2+ from water with excellent performance

dc.creatorGuilherme, MR
dc.creatorReis, AV
dc.creatorPaulino, AT
dc.creatorFajardo, AR
dc.creatorMuniz, EC
dc.creatorTambourgi, EB
dc.date2007
dc.dateSEP 5
dc.date2014-11-13T21:39:47Z
dc.date2015-11-26T16:02:40Z
dc.date2014-11-13T21:39:47Z
dc.date2015-11-26T16:02:40Z
dc.date.accessioned2018-03-28T22:52:04Z
dc.date.available2018-03-28T22:52:04Z
dc.identifierJournal Of Applied Polymer Science. John Wiley & Sons Inc, v. 105, n. 5, n. 2903, n. 2909, 2007.
dc.identifier0021-8995
dc.identifierWOS:000247943800058
dc.identifier10.1002/app.26287
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/74745
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/74745
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/74745
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1265115
dc.descriptionThis contribution describes the absorption percentage of Pb2+ and Cu2+ from water by a superabsorbent hydrogel matrix (SH) made from an anionic polysaccharide copolymerized with acrylic acid (AAc) and acrylamide (AAm). Metal-absorption tests, upon sequential pH variation, indicated that the SH has pH-sensitivity for the absorption of both metals from solution, attributed to the functional ionic groups (-COOH) present in the AAc and arabic gum (AG) segments. At the pH 5.0, the SH exhibited good absorption capacity: 73.10% for Pb-2+,Pb- 81.99% for Cu2+ in water and 63.64% for Pb2+, and 76.67% for Cu2+ in saline water with 0.1 mol kg(-1) ionic strength. A replicated 2 2 full factorial design with a central point was built to evaluate the maximum absorption capacity of the metals into the SH. It was found that both the interaction and main effects of the pH and the initial concentration of metal solution on absorption percentage of the metals were statistically significant. Surface response plots indicated that the absorption capacity of both metals into the SH may be appreciably improved by using the solutions with lower initial concentration of metal and with higher pH values. Metal-absorption results demonstrated that the SH is a convenient material for absorption of Pb2+ and Cu2+ from pure aqueous and saline aqueous environments. (C) 2007 Wiley Periodicals, Inc.
dc.description105
dc.description5
dc.description2903
dc.description2909
dc.languageen
dc.publisherJohn Wiley & Sons Inc
dc.publisherHoboken
dc.publisherEUA
dc.relationJournal Of Applied Polymer Science
dc.relationJ. Appl. Polym. Sci.
dc.rightsfechado
dc.rightshttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dc.sourceWeb of Science
dc.subjecthydrogels
dc.subjectmetal-polymer complexes
dc.subjectpolysaccharides
dc.subjectswelling
dc.subjectwater-soluble polymers
dc.subjectBagasse Fly-ash
dc.subjectSugar-industry Waste
dc.subjectMethylene-blue
dc.subjectSwelling Behavior
dc.subjectAdsorption
dc.subjectAdsorbent
dc.subjectSorption
dc.subjectResin
dc.subjectBeads
dc.subjectIons
dc.titleSuperabsorbent hydrogrel based on modified polysaccharide for removal of Pb2+ and Cu2+ from water with excellent performance
dc.typeArtículos de revistas


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