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Type: Artigo de periódico
Title: Characterization of Brazilian Bentonite Organoclays as Sorbents of Petroleum-derived Fuels
Author: Bertagnolli, C
da Silva, MGC
Abstract: This work focused on preparing and characterizing Brazilian bentonite clay through the use of quaternary ammonium salt so as to apply it as a sorbent for petroleum-derived fuels. Bentonite clay was organophilizated by the intercalation of quaternary ammonium salts such as cetyl-pyridinium chloride and benzalkonium chloride. The resulting materials were characterized by X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy, N-2 physisorption and infrared spectroscopy techniques. The clay similarity with petroleum-derived fuels, gasoline and diesel oil were defined by sorption and swelling tests. The increase in basal spacing and the appearance of absorption bands related to the CH2 and CH3 groups confirm the efficiency of Brazilian organoclays. Removal percentages between 50 and 60 for benzene, toluene and xylene indicate the potential of organoclay in the remediation of areas contaminated by petroleum-derived fuels.
Subject: Verde-Lodo clay
quaternary ammonium salt
X-ray diffraction
infrared spectroscopy
Country: Brasil
Editor: Univ Fed Sao Carlos, Dept Engenharia Materials
Citation: Materials Research-ibero-american Journal Of Materials. Univ Fed Sao Carlos, Dept Engenharia Materials, v. 15, n. 2, n. 253, n. 259, 2012.
Rights: aberto
Identifier DOI: 10.1590/S1516-14392012005000017
Date Issue: 2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

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