Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/746
Título: Mathematical modelling of supercritical CO2 extraction of volatile oils from aromatic plants
Autor: Grosso, C.
Coelho, José Augusto Paixão
Pessoa, F. L. P.
Fareleira, J. M. N. A.
Barroso, J. G.
Urieta, J. S.
Palavra, A. F.
Sovova, H.
Palavras-chave: Supercritical fluid extraction
Modelling
Volatile oils
Data: 1-Jun-2010
Editora: Pergamon - Elsevier Science LTD
Citação: Grosso C, Coelho J P, Pessoa F L P, Fareleira J M N A, Barroso J G, Urieta J S, Palavra A F, Sovova H. Mathematical modelling of supercritical CO2 extraction of volatile oils from aromatic plants. Chemical Engineering Science. 2010; 65 (11): 3579-3590.
Relatório da Série N.º: 11
Resumo: The modelling of the experimental data of the extraction of the volatile oil from six aromatic plants (coriander, fennel, savoury, winter savoury, cotton lavender and thyme) was performed using five mathematical models, based on differential mass balances. In all cases the extraction was internal diffusion controlled and the internal mass transfer coefficienty (k(s)) have been found to change with pressure, temperature and particle size. For fennel, savoury and cotton lavender, the external mass transfer and the equilibrium phase also influenced the second extraction period, since k(s) changed with the tested flow rates. In general, the axial dispersion coefficient could be neglected for the conditions studied, since Peclet numbers were high. On the other hand, the solute-matrix interaction had to be considered in order to ensure a satisfactory description of the experimental data.
Peer review: yes
URI: http://hdl.handle.net/10400.21/746
ISSN: 0009-2509
Aparece nas colecções:ISEL - Eng. Quim. Biol. - Artigos

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