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Water accumulation in the alcohol extraction of cottonseed
Author(s) -
Abraham G.,
Hron R. J.,
Kuk M. S.,
Wan P. J.
Publication year - 1993
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/bf02542628
Subject(s) - moisture , aqueous solution , water content , solvent , alcohol , extraction (chemistry) , cottonseed , chemistry , adsorption , ethanol , chromatography , materials science , organic chemistry , food science , geology , geotechnical engineering
The critical moisture content of cottonseed flakes extracted with an aqueous alcohol solvent can be defined as that flake moisture level at which the flakes lose no moisture during extraction. This study shows that the critical moisture content for aqueous ethanol (92%, w/w) is 3%. For aqueous isopropanol (88%, w/w) this value is 6%. If the moisture contents of the flakes are above these levels, then the solvents pick up moisture. For moisture contents below this level, the flakes adsorb moisture and actually dry the alcohol. It is proposed that this latter capability can be used as a basis for a method to control water accumulation in aqueous alcohol solvent extractions.