THE EFFECT of ANIONIC SORPTION on THE METAKAOLINITE

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dc.contributor.authorCampos, Valquiria [UNESP]
dc.contributor.authorMorais, Leandro C. [UNESP]
dc.contributor.authorRosa, Andre H. [UNESP]
dc.contributor.authorFraceto, Leonardo F. [UNESP]
dc.contributor.authorBuchler, Pedro M.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:12:11Z
dc.date.available2014-05-20T13:12:11Z
dc.date.issued2010-01-01
dc.description.abstractThis paper reports an investigation on the effect of thermal activation of kaolinite. It is well known that during calcinations (400-650 degrees C), kaolinite loses the OH lattice water and is transformed into metakaolinite or amorphous material. Arsenic is trace element that is toxic to animals including humans. The adsorption of arsenic on kaolinite was investigated at varying pH and thermal pretreatment. Calcination of sample is carried out at 650 degrees C for 3 h. The decomposition of kaolinite is recorded using methods of thermal analysis. The resultant product is identified by XRD. Laboratory experiments were conducted examining the effect of arsenic by thermally modified kaolinite. The Langmuir isotherm was used to describe arsenite and arsenate sorption by the calcined kaolinite. The equilibrium parameters used were based on experimental data obtained for the dynamic adsorption process of arsenic. Removal of arsenate using natural kaolinite was satisfactory, whereas arsenic was not removed by adsorption with thermally modified kaolinite. Moreover, the adsorption of arsenic by kaolinite and metakaolinite decreases with increasing pH.en
dc.description.affiliationSão Paulo State Univ, Dept Environm Engn, BR-18087180 Sorocaba, Brazil
dc.description.affiliationUnespSão Paulo State Univ, Dept Environm Engn, BR-18087180 Sorocaba, Brazil
dc.format.extent1015-1018
dc.identifierhttp://dx.doi.org/10.4028/www.scientific.net/MSF.660-661.1015
dc.identifier.citationAdvanced Powder Technology Vii. Stafa-zurich: Trans Tech Publications Ltd, v. 660-661, p. 1015-1018, 2010.
dc.identifier.doi10.4028/www.scientific.net/MSF.660-661.1015
dc.identifier.issn0255-5476
dc.identifier.orcid0000-0002-2042-018X
dc.identifier.urihttp://hdl.handle.net/11449/178
dc.identifier.wosWOS:000295548800163
dc.language.isoeng
dc.publisherTrans Tech Publications Ltd
dc.relation.ispartofAdvanced Powder Technology Vii
dc.relation.ispartofsjr0,180
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectnatural kaoliniteen
dc.subjectthermal treatmenten
dc.subjectremovalen
dc.subjectanionen
dc.subjectwateren
dc.titleTHE EFFECT of ANIONIC SORPTION on THE METAKAOLINITEen
dc.typeTrabalho apresentado em evento
dcterms.rightsHolderTrans Tech Publications Ltd
unesp.author.lattes5228846314663888[3]
unesp.author.orcid0000-0002-2042-018X[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, Sorocabapt

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Artigos - Engenharia Ambiental - Sorocaba