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Characterization and study of sorptive properties of differently prepared organoclays from a Brazilian natural bentonite

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Summary

Organoclays are used in cleaning natural waters from dissolved hydrocarbons by secondary sorption. Aiming future applications in this field, a Brazilian polycationic bentonite was used to prepare HDTMA organoclays, by using different quaternary ammonium salt loadings and clay content slips, to evaluate how these conditions may affect their sorption properties. The organoclays were characterized by CHN analysis, X-ray diffraction, thermogravimetry, and differential thermal analysis. For secondary sorption tests, to compare with published studies, toluene was used as a reference sorbate. Characterization and sorption results indicate that the Brazilian bentonite organoclays prepared in this study have a potential industrial use in environmental applications.

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Authors and Affiliations

  1. University of Săo Paulo, Polytechnic School, Chemical Engineering Department, SP, Brazil

    M. M. G. Ramos Vianna

  2. Inorganic Process Department, School of Chemistry, Federal University of Rio de Janeiro, Brazil

    J. Dweck

  3. University of Săo Paulo, Polytechnic School, Materials and Metallurgical Engineering Department, SP, Brazil

    V. F. J. Kozievitch

  4. University of Săo Paulo, Polytechnic School, Materials and Metallurgical Engineering Department, SP, Brazil

    F. R. Valenzuela-Diaz

  5. University of Săo Paulo, Polytechnic School, Chemical Engineering Department, SP , Brazil

    P. M. Büchler

Authors
  1. M. M. G. Ramos Vianna
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  2. J. Dweck
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  3. V. F. J. Kozievitch
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  4. F. R. Valenzuela-Diaz
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  5. P. M. Büchler
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Ramos Vianna, M., Dweck, J., Kozievitch, V. et al. Characterization and study of sorptive properties of differently prepared organoclays from a Brazilian natural bentonite. J Therm Anal Calorim 82, 595–602 (2005). https://doi.org/10.1007/s10973-005-0939-4

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  • DOI: https://doi.org/10.1007/s10973-005-0939-4

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