Deacidification of soybean oil by membrane technology

L. P. Raman, M. Cheryan, N. Rajagopalan

Research output: Research - peer-reviewArticle

Abstract

After extracting free fatty acids (FFA) from a model crude vegetable oil with methanol, FFA were separated from methanol by nanofiltration. Of the several commercially available membranes that were evaluated, the best resulted in FFA rejection of >90% and flux of >25 Lm-2 h-1. A combination of high-rejection and low-rejection membranes resulted in a retentate stream of 35% FFA and a permeate stream with less than 0.04% FFA, which can be recycled to the extractor. No alkali is required, no soapstock is formed, and almost all streams within the membrane process are recycled with little discharged as effluent.

LanguageEnglish (US)
Pages219-224
Number of pages6
JournalJAOCS, Journal of the American Oil Chemists' Society
Volume73
Issue number2
DOIs
StatePublished - 1996

Fingerprint

Soybean Oil
Nonesterified Fatty Acids
Technology
Membranes
deacidification
soybean oil
free fatty acids
Membrane technology
Methanol
methanol
Plant Oils
Petroleum
Alkalies
soapstock
extractors
permeates
vegetable oil
alkalis
effluents
nanofiltration

Keywords

  • Free fatty acids
  • Membrane technology
  • Methanol
  • Refining
  • Vegetable oils

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Organic Chemistry

Cite this

Deacidification of soybean oil by membrane technology. / Raman, L. P.; Cheryan, M.; Rajagopalan, N.

In: JAOCS, Journal of the American Oil Chemists' Society, Vol. 73, No. 2, 1996, p. 219-224.

Research output: Research - peer-reviewArticle

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