2008
DOI: 10.1590/s0366-69132008000300002
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Avaliação da eficiência de caulinita intercalada com dimetilsulfóxido em adsorção com o Zn(II) em meio aquoso: cinética do processo de adsorção

Abstract: Amostras de caulinita oriundas da região do Rio Capim, estado do Pará, Brasil, foram intercaladas com dimetilsulfóxido - DMSO. As amostras de caulinita naturais e intercaladas foram utilizadas em processo de adsorção com Zn(II) em meio aquoso em pH 5,0 e temperatura controlada de 298 ± 1K. As propriedades físico-químicas das amostras de caulinita foram otimizadas pelo processo de intercalação, como: área superficial de 14,74 para 91,72 m²g-1 (A1) e diâmetro de poros de 2,79 para 10,72 nm (A1). A análise dos re… Show more

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Cited by 8 publications
(4 citation statements)
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“…The pre-intercalation of kaolinite is the first step responsible for increasing the distance between the kaolinite layers, and this procedure was performed with DMSO. The obtained kaolinite-DMSO exhibited XRD pattern similar to that of DMSO-intercalated kaolinite previously reported [25,26,[43][44][45]. The diffraction pattern showed a significant change of the characteristic kaolinite peak from ~14° 2θ (d 001 =7.09 Å) to ~9° 2θ (d 001 =11.40 Å, Fig.…”
Section: Dmso-intercalated Kaolinitesupporting
confidence: 78%
“…The pre-intercalation of kaolinite is the first step responsible for increasing the distance between the kaolinite layers, and this procedure was performed with DMSO. The obtained kaolinite-DMSO exhibited XRD pattern similar to that of DMSO-intercalated kaolinite previously reported [25,26,[43][44][45]. The diffraction pattern showed a significant change of the characteristic kaolinite peak from ~14° 2θ (d 001 =7.09 Å) to ~9° 2θ (d 001 =11.40 Å, Fig.…”
Section: Dmso-intercalated Kaolinitesupporting
confidence: 78%
“…Por meio da caracterização da caulinita rosa pelo método de fluorescência de raio X foi possível obter a composição química da caulinita rosa apresentada na Tabela 1. A composição química da caulinita está de acordo com valores encontrados na literatura que afirmam ser a caulinita um filossilicato (Angove et al, 1997), constituído de tetraedros de silício ligados a octaedros de alumínio (Leja, 1982;Guerra et al, 2008).…”
Section: Composição Químicaunclassified
“…Kaolinite and ilite are important phyllosilicates with microfibrous morphology in industrial applications due to its unique physical and chemical properties 8 . Considering the favorable peculiarities, removal of pollutant on clay surfaces has received considerable attention, in this context; ilite clay has been shown to remove divalent cadmium and kaolinite in form natural and intercalated eliminates divalent mercury from aqueous medium 9,10 .…”
Section: Introductionmentioning
confidence: 99%