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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/7063

Title: Supercritical CO2 extraction of essential oils from Thymus vulgaris
Other Titles: Brazilian Journal of Chemical Engineering
Authors: Melo, Silvio Alexandre Beisl Vieira de
Costa, Glória Meyberg Nunes
Garau, R.
Casula, A.
Pittau, B.
Keywords: Mathematical modeling;Supercritical CO2 extraction;Essential oils;Thymus vulgaris
Issue Date: Sep-2000
Publisher: Associação Brasileira de Engenharia Química
Abstract: Supercritical CO2 extraction of essential oil from Thymus vulgaris leaves was studied using experimental data recently obtained in the Florys S.p.A. laboratory. Mass transfer coefficients in the supercritical and solid phases from extraction curves at 40°C and 20 MPa were evaluated using a mathematical model based on the local adsorption equilibrium of essential oil on lipid in leaves. The adsorption equilibrium constant was fitted to these experimental data, and internal and external mass transfer resistances were calculated, allowing identification of the mechanism controlling the extraction process.
URI: http://www.repositorio.ufba.br/ri/handle/ri/7063
ISSN: 0104-6632
Appears in Collections:Artigos Publicados em Periódicos (Quimica)

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