Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/95092
Type: Artigo de periódico
Title: Desorption Of Ethyl Acetate From Adsorbent Surfaces (organoclays) By Supercritical Carbon Dioxide
Author: Coelho G.L.V.
Augusto F.
Pawliszyn J.
Abstract: Supercritical fluid extraction was used to regenerate organically modified montimorilloniteclay (hexadecyltrimethylammonium-clay and tetramethylammonium-clay), after it was used to adsorb ethyl acetate from aqueous solutions. The desorption of ethyl acetate adsorbed over the clays was performed with CO2 at temperatures ranging from 301 to 333 K and pressures ranging from 69.0 to 413.8 bar. A crossover effect was observed. The experimental data was fitted to a simple model, with the best results corresponding to desorption with CO2 in its supercritical region.Supercritical fluid extraction was used to regenerate organically modified montimorillonite-clay (hexadecyltrimethylammonium-clay and tetramethylammonium-clay), after it was used to adsorb ethyl acetate from aqueous solutions. The desorption of ethyl acetate adsorbed over the clays was performed with CO2 at temperatures ranging from 301 to 333 K and pressures ranging from 69.0 to 413.8 bar. A crossover effect was observed. The experimental data was fitted to a simple model, with the best results corresponding to desorption with CO2 in its supercritical region.
Editor: ACS, Washington, DC, United States
Rights: fechado
Identifier DOI: 
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0035834933&partnerID=40&md5=c2f7c52a8189c4fd3e53e1879656e344
Date Issue: 2001
Appears in Collections:Unicamp - Artigos e Outros Documentos

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