Desorption of toluene from modified clays using supercritical carbon dioxide

Brazilian Journal of Chemical Engineering

D. G. P. Carneiro¹  M. F. Mendes¹  G. L. V. Coelho¹ 

[1] ,Universidade Federal Rural do Rio de Janeiro DEQ Laboratório de Processos de SeparaçãoSeropédica RJ ,Brazil

关键词: Supercritical fluid;    desorption process;    organic compound adsorvents;   

DOI  :  10.1590/S0104-66322004000400013

来源: SciELO

【 摘 要 】

The main objective of this work is to study the regeneration capacity of modified clays using supercritical fluid. These modified clays are used as organic compound adsorvents. The experimental step was done using a packed column with the clay contaminated by toluene. The results obtained showed the influence of the density of the supercritical CO2 and of the organic modifier in the desorption process. These data were modeled with first- and second-order models. Better results were obtained using the second-order model. This study makes possible the scale-up of the desorption process for regeneration of solid matrices using supercritical fluids.

【 授权许可】

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