Sorption of lead on modified silica obtained from chrysotile: isotherms application

Silva Filho, Edson Cavalcanti da; Fortes, Antônio Wuiston Martins; Reis, Luizângela da Silva; Santos, Maria Rita de Morais Chaves; Santos Júnior, Luiz de Sousa; Fonseca, Maria Gardênnia da

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dc.creator	Silva Filho, Edson Cavalcanti da
dc.creator	Fortes, Antônio Wuiston Martins
dc.creator	Reis, Luizângela da Silva
dc.creator	Santos, Maria Rita de Morais Chaves
dc.creator	Santos Júnior, Luiz de Sousa
dc.creator	Fonseca, Maria Gardênnia da
dc.date	2010-04-01
dc.date.accessioned	2022-03-21T20:06:53Z
dc.date.available	2022-03-21T20:06:53Z
dc.identifier	https://comunicatascientiae.com.br/comunicata/article/view/4
dc.identifier	10.14295/cs.v1i1.4
dc.identifier.uri	http://biblioteca-repositorio.clacso.edu.ar/handle/CLACSO/77467
dc.description	A silica was modified with three alcoxysilanes with different quantities of nitrogen, whose the silica obtained from chrysotile acid leaching. The modified silicas were applied in lead removal from aqueous solution, obtained the following capacities: 1.41, 0.78 e 0.60 mmol g-1 for the materials containing 3, 1 and 2 nitrogen in organic chains, respectively. The isotherms were adjusted using different models, and each material showed affinity to a model. The interactions were favorable and spontaneous from Freundlich model and Gibbs free energy, respectively.	en-US
dc.description	Uma sílica foi modificada com três alcoxissilanos com diferentes quantidades de nitrogênio, onde a sílica foi obtida da lixiviação ácida da crisotila (amianto). As sílicas modificadas foram aplicadas na remoção de chumbo de soluções aquosas, obtendo-se as seguintes capacidades: 1,41, 0,78 e 0,60 mmol g-1 para os materiais contendo 3, 1 e 2 átomos de nitrogênios nas cadeias orgânicas, respectivamente. As isotermas foram ajustadas usando diferentes modelos, onde cada material mostrou afinidade a um modelo. As interações foram favoráveis e espontâneas a partir do modelo de Freundlich e da energia livre de Gibbs, respectivamenteSorption of lead on modified silica obtained from chrysotile: isotherms applicationAbstractA silica was modified with three alcoxysilanes with different quantities of nitrogen, whose the silica obtained from chrysotile acid leaching. The modified silicas were applied in lead removal from aqueous solution, obtained the following capacities: 1.41, 0.78 e 0.60 mmol g-1 for the materials containing 3, 1 and 2 nitrogen in organic chains, respectively. The isotherms were adjusted using different models, and each material showed affinity to a model. The interactions were favorable and spontaneous from Freundlich model and Gibbs free energy, respectively.	pt-BR
dc.format	application/pdf
dc.language	por
dc.publisher	Federal University of Piauí	en-US
dc.relation	https://comunicatascientiae.com.br/comunicata/article/view/4/17
dc.source	Comunicata Scientiae; Vol. 1 No. 1 (2010); 15	en-US
dc.source	Comunicata Scientiae; v. 1 n. 1 (2010); 15	pt-BR
dc.source	2177-5133
dc.source	2176-9079
dc.source	10.14295/cs.v1i1
dc.subject	lead	en-US
dc.subject	adsorption	en-US
dc.subject	silica	en-US
dc.subject	chumbo	pt-BR
dc.subject	adsorção	pt-BR
dc.subject	sílica	pt-BR
dc.title	Sorption of lead on modified silica obtained from chrysotile: isotherms application	en-US
dc.title	Sorção de chumbo numa sílica modificada obtida da crisotila: aplicação de isotermas	pt-BR
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion