Preparação E Caracterização De Argila Organofílica Para Remoção De Tolueno

Oliveira, Maria Fernanda de; Bedin, Sidmara; Vieira, M.G.A.; Santos, O.A. Andreo dos; Silva, M.G.C. da

doi:10.5151/chemeng-cobeqic2015-299-33859-259917

Anais Do Congresso Brasileiro De Engenharia Química Em Iniciação Científica - Cobeq IC 2015 2015

DOI: 10.5151/chemeng-cobeqic2015-299-33859-259917

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Preparação E Caracterização De Argila Organofílica Para Remoção De Tolueno

Maria Fernanda de Oliveira¹,

Sidmara Bedin²,

M.G.A. Vieira³

et al.

Abstract: RESUMO -Argilas organofílicas possuem grande afinidade por compostos orgânicos. Desta forma, estão sendo aplicadas na adsorção e retenção de resíduos industriais perigosos e contaminantes orgânicos. Neste trabalho preparou-se a argila organofílica a partir de trocas iônicas entre a argila comercial Fluidgel e o sal brometo de hexadeciltrimetilamônio (HDTMA). As argilas, comercial e organofílica foram caracterizadas por medidas de adsorção-dessorção de N 2 , difração de raios X e análise termogravimétrica. Para… Show more

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Study of Variables in the Organofilization Process of Bentonite Clays from Cubati, PB, Brazil, with Ionic Surfactants

Silva¹,

Lima²,

Figueiredo³

et al. 2014

MSF

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Organoclays are used as disperse agent in the composition of drilling fluids, which play important roles during the drilling of petroleum wells. This work is intended to develop several kinds of smectite from Cubati-PB for use in drilling fluids, using the ionic surfactant Praepagen WB. The following materials were used: natural Gray and Superior Green bentonite, from the town of Cubati-PB, and quaternary ammonium salts: Praepagen WB® with 45% active matter. The organoclays were characterized by laser diffraction granulometric analysis, chemical composition by X-ray fluorescence, thermogravimetric analysis, differential thermal analysis and X-ray diffraction. In general, we noticed that the clays present diffractograms and thermal behavior typical of bentonites. The results showed that the studied clay has potential for organofilization. With respect to the process variables, we observed that they do not interfere in the organofilization process.

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Study of Variables in the Organofilization Process of Bentonite Clays from Cubati, PB, Brazil, with Ionic Surfactants

Silva¹,

Lima²,

Figueiredo³

et al. 2014

MSF

View full text Add to dashboard Cite

show abstract

Study of Process Variables for Organofilization of the Bentonite Clay from Cubati, Pb

Silva

Figueiredo

Pereira

et al. 2015

MSF

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Bentonite clays, after treated with surfactants, are called organofilic clays. The objective of this work is the development of organofilic clays, using ionic surfactants, based on a variety of smectite from Cubati, PB, for application in organic media. The following materials were used: Superior Gray bentonite clay from the town of Cubati, PB, Brazil, and the ionic surfactants Praepagen WB® and Praepagen HY®. The clay was characterized with basis on the granulometric analysis by laser diffraction (AG), chemical composition by X-ray fluorescence (EDX), X-ray diffraction (XRD), thermogravimetric analysis (TG) and thermal differential (DTA). The clay was processed and then turned into sodic and later into organofilic clays. The results prove that there was intercalation of the ionic surfactant into the clay fraction, and that the process variables did not affect the organofilization process, but the surfactant type has influence on the process.

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Preparação E Caracterização De Argila Organofílica Para Remoção De Tolueno

Cited by 2 publications

References 4 publications

Study of Variables in the Organofilization Process of Bentonite Clays from Cubati, PB, Brazil, with Ionic Surfactants

Study of Variables in the Organofilization Process of Bentonite Clays from Cubati, PB, Brazil, with Ionic Surfactants

Study of Process Variables for Organofilization of the Bentonite Clay from Cubati, Pb

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