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Concentration of Natural Vitamin E Using a Continuous Countercurrent Supercritical CO 2 Extraction‐Distillation Dual Column
Author(s) -
Shi B.,
Jin J.,
Yu E.,
Zhang Z.
Publication year - 2011
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201000271
Subject(s) - countercurrent exchange , supercritical fluid , chromatography , distillation , extraction (chemistry) , chemistry , supercritical fluid extraction , supercritical carbon dioxide , vacuum distillation , mass transfer , thermodynamics , organic chemistry , physics
A continuous countercurrent supercritical CO 2 extraction‐distillation dual‐column process was developed to extract and concentrate natural vitamin E (VE) from soybean oil deodorizer distillate (SODD). The experimental results demonstrated that process parameters such as extraction pressure, temperature, and solvent‐to‐feed ratio significantly impacted on the extraction efficiency of natural VE. A new five‐parameter mass transfer model for the continuous countercurrent supercritical CO 2 extraction‐distillation dual‐column process was presented based on the Penetration and Double‐Film theories. The calculated values of the mathematical model agreed well with the experimental data, with absolute average relative deviation values of less than 25 %.