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Design of oilseed extractors I. Oil extraction (supplement)
Author(s) -
Karnofsky George
Publication year - 1987
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/bf02609361
Subject(s) - countercurrent exchange , extraction (chemistry) , thermal diffusivity , diffusion , chromatography , process engineering , chemistry , materials science , computer science , thermodynamics , engineering , physics
This supplements an earlier article (1) which presented a method of calculating retention time required for countercurrent extraction of oilseeds from laboratory extraction rate data. The method is based on the empirical observation that extraction rate is governed largely by the rate at which undissolved oil goes into solution, resistance to diffusion from the flakes becoming of consequence only in thick flakes. This article introduces the concepts of parabolic concentration gradient in the flakes and of an apparent diffusivity which is an inherent property of the seed. The method is applied to the solution of several commercially important extractions.