Phase equilibrium data pertaining to the extraction of cottonseed oil with ethanol and 2-propanol View Full Text


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Article Info

DATE

1953-07

AUTHORS

Frank C. Magne, Evald L. Skau

ABSTRACT

Basic phase relation data have been obtained relative to the extraction of cottonseed oil with ethanol and 2-propanol, especially as affected by water in the solvent. Mutual solubility diagrams have been constructed for cottonseed oil with ethanol and 2-propanol of various aqueous concentrations. Tie-line data at 30° C. have been obtained for the ternary ethanol-cotton-seed oil-water and 2-propanol-cottonseed oil-water systems. These combined data will be of assistance in the selection of the most desirable temperatures and moisture concentrations in the solvent extraction of cottonseed with these alcohols. Comparison with results previously published for soybean oil suggests that the mutual solubility data for cottonseed oil and aqueous ethanols are applicable to other vegetable oils over a wide range of iodine values.In general, the results indicate that 2-propanol is the more desirable solvent since complete miscibility with the oil can be attained at temperatures below its normal boiling point even at moisture contents as high as 10% by weight whereas ethanol can tolerate only about 1.5% of water. High moisture contents result in more effective separation of the oil from the solvent when the miscella is cooled after extraction. Constant boiling aqueous ethanol and 2-propanol present the disadvantage of requiring greater than atmospheric pressure during extraction in order to attain complete miscibility with the oil. More... »

PAGES

288-291

References to SciGraph publications

  • 1949-12. Isopropanol as a solvent for extraction of cottonseed oil. II. Separation of purified oil from miscella in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1947-11. Isopropanol as a solvent for extraction of cottonseed oil in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1948-01. The nondistillation alcohol extraction process for soybean oil in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1950-07. Isopropanol as a solvent for extraction of cottonseed oil III. The use of recycling to effect solvent economy in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
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    http://scigraph.springernature.com/pub.10.1007/bf02671203

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    http://dx.doi.org/10.1007/bf02671203

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