Funcionalização da argila bentonita para adsorção de compostos orgânicos

Gabriela Mangili Esteves; Jacqueline Roberta Tamashiro; Fabiana Costa Munhoz Ferraz; Felipe Silva Semaan; Aroldo Magdalena; Angela Kinoshita; Edilson Moura Pinto

doi:10.22481/exon.v11i2.20600

Authors

Gabriela Mangili Esteves Centro Universitário Sagrado Coração – UNISAGRADO
Jacqueline Roberta Tamashiro Universidade do Oeste Paulista https://orcid.org/0000-0001-5607-6555
Fabiana Costa Munhoz Ferraz Centro Universitário Sagrado Coração – UNISAGRADO
Felipe Silva Semaan Universidade Federal Fluminense https://orcid.org/0000-0001-8264-6793
Aroldo Magdalena Universidade Estadual Paulista (Unesp) https://orcid.org/0000-0003-3385-2106
Angela Kinoshita Universidade do Oeste Paulista https://orcid.org/0000-0002-5057-1667
Edilson Moura Pinto Faculdade de Ensino Superior do Interior Paulista – FAIP https://orcid.org/0000-0002-0482-5726

DOI:

https://doi.org/10.22481/exon.v11i2.20600

Keywords:

Organophilic, Hydrocarbons, Benzene, Environmental impact, BTEX

Abstract

Environmental accidents involving the leakage of fuels and derivatives are highly toxic to local in which are transported. Fuels contain organic compounds such as benzene, toluene, ethylbenzene and xylenes (BTEX), which are the main agents of contamination of soils and water resources. The objective of this work was the functionalization of bentonite clay by dissolving it in quaternary salts of tetramethylammonium bromide (MTA) and cetyltrimethylammonium bromide (BCTA) to retaining benzene. X-Ray Diffraction (XRD) technique and gas chromatography was performed. The XRD diffractograms showed widening of basal space in the organophilic clays, indicating that the salts were able to functionalize them, modifying the interlayer layers. In gas chromatography, a higher concentration of benzene adsorption was observed in organophilic clays when compared to untreated clay. The clay functionalized by MTA adsorbed approximately 90% of the organic compound. The results of this work show that both organophilic clays, modified by the two quaternary salts, were effective in the adsorption of benzene. Therefore, functionalized clays can be applied as a new alternative in the treatment of water and soils contaminated by benzene, resulting from environmental accidents.

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Author Biography

Aroldo Magdalena, Universidade Estadual Paulista (Unesp)

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