Designed pendant chain covalently bonded to silica gel for cation removal

dc.creatorDey, RK
dc.creatorAiroldi, C
dc.date2008
dc.dateAUG 15
dc.date2014-11-16T16:02:18Z
dc.date2015-11-26T17:25:40Z
dc.date2014-11-16T16:02:18Z
dc.date2015-11-26T17:25:40Z
dc.date.accessioned2018-03-29T00:12:53Z
dc.date.available2018-03-29T00:12:53Z
dc.identifierJournal Of Hazardous Materials. Elsevier Science Bv, v. 156, n. 41699, n. 95, n. 101, 2008.
dc.identifier0304-3894
dc.identifierWOS:000257722000013
dc.identifier10.1016/j.jhazmat.2007.12.005
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/61262
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/61262
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/61262
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1284367
dc.descriptionThe precursor 1,4-bis(3-aminopropyl)piperazine organofunctionalized silica gel reacted with methylacrylate to yield a new inorganic-organic chelating material, by adopting a heterogeneous and divergent synthetic approach. The synthesized materials were characterized through elemental analyses and spectroscopic techniques such as infrared, nuclear magnetic nuclei of carbon-13 and silicon-29. Due to the increment of basic centers attached to the pendant chains the metal adsorption capability of the final chelating material, was found to be higher than its precursor. The adsorption of metal ions from aqueous solution followed the order Cu2+ > Ni2+ > Co2+. Both Langmuir and Freundlich models were found to be applicable for the adsorption of copper, with the equilibrium parameter value within zero to one. The competitive sorption behavior, with variation of pH, was favorable for the separation of copper from binary mixtures with nickel and cobalt. When sodium, potassium and magnesium cations are present in the medium little effects on adsorption were observed, thus suggesting that the synthesized material can be useful for removal of toxic/heavy metal ions from natural and wastewater systems. (C) 2007 Elsevier B.V. All rights reserved.
dc.description156
dc.description41699
dc.description95
dc.description101
dc.languageen
dc.publisherElsevier Science Bv
dc.publisherAmsterdam
dc.publisherHolanda
dc.relationJournal Of Hazardous Materials
dc.relationJ. Hazard. Mater.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectsilica gel
dc.subjectadsorption
dc.subjectcation removal
dc.subjectchelating material
dc.subjectAtomic-absorption-spectrometry
dc.subjectMetal-ions
dc.subjectSolid/liquid Interface
dc.subjectSchiff-bases
dc.subjectSurface
dc.subjectCopper
dc.subjectThermodynamics
dc.subjectPolymers
dc.subjectNitrogen
dc.subject4,4'-diaminodiphenylether
dc.titleDesigned pendant chain covalently bonded to silica gel for cation removal
dc.typeArtículos de revistas


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