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	Provedor de dados 116 (1) Autor MEIRELES,M. Angela A. (1) ZAPATA NOREÑA,Caciano (1) Palavra-chave Clove essential oil (1) Diffusion coefficient (1) Finite difference (1) Mass transfer (1) Supercritical extraction (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 1997 (1) País Brazil (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última THE EFFECTIVE DIFFUSIVITY OF CLOVE(Eugenia caryophyllus) ESSENTIAL OIL IN PRESSURIZED CO2 116 ZAPATA NOREÑA,Caciano; MEIRELES,M. Angela A.. The effective diffusivity of clove essential oil in subcritical liquid CO2 was estimated. The experimental apparatus employed was a fixed-bed extractor. The fixed bed was formed with grounded (mesh -32 + 65) and compacted clove buds which were considered a solid element. The effective diffusion coefficient was evaluated by fitting the experimental concentration profile to the unsteady state mass balance equation for unidirectional diffusion in a finite solid medium. The diffusion coefficient was related to the concentration of oil in the solid by an exponential function. The estimated values of the effective diffusion coefficient varied from 3.64 to 5.22x10-10 m2/s. The average relative errors were lower than 3.1%. Tipo: Info:eu-repo/semantics/article Palavras-chave: Diffusion coefficient; Mass transfer; Finite difference; Clove essential oil; Supercritical extraction. Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20611997000400010 Registros recuperados: 1 Primeira ... 1 ... Última

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