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Temperature‐dependent diffusion coefficient of soluble substances during ethanol extraction of clove
Author(s) -
Myint San,
Daud Wan Ramli Wan,
Mohamad Abu Bakar,
Kadhum Abdul Amir H.
Publication year - 1996
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02518115
Subject(s) - thermal diffusivity , extraction (chemistry) , arrhenius equation , diffusion , nonlinear regression , mass transfer , chemistry , mass diffusivity , thermodynamics , particle (ecology) , mass transfer coefficient , chromatography , analytical chemistry (journal) , materials science , regression analysis , activation energy , organic chemistry , mathematics , statistics , physics , oceanography , geology
The temperature dependence of the diffusion coefficient of ethanol‐soluble substances from ground cloves (particle size 250 μm) during extraction was estimated by fitting batch extraction data at several temperatures (27.8, 40, 50, and 60°C) to a previously developed mass transfer model. The model was based on spherical geometry of particles. Nonlinear regression analysis was used to develop an equation that describes the diffusivity as a function of temperature. The temperature dependence of D A was of the Arrhenius type.