Adding value to soapstocks from the vegetable oil refining: Alternative processes

• Type: Article in International Conference Proceedings Book
• Date: 2020

Authors

Cruz, M (Author) Other; Manuel Fonseca Almeida (Author) FEUP; Dias, JM (Author) Other; Alvim Ferraz, MC (Author) Other

Conference proceedings International

Title: Wastes: Solutions, Treatments and Opportunities III - Selected papers from the 5th International Conference Wastes: Solutions, Treatments and Opportunities, 2019

Pages: 313-318

5th International Conference Wastes: Solutions, Treatments and Opportunities, 2019

4 September 2019 through 6 September 2019

Indexing

Scopus - 0 Citations

Other information

Authenticus ID: P-00R-RTX

DOI: 10.1201/9780429289798-50

Abstract (EN): Soapstock is a major by-product from vegetable oil refining, conventionally recovered by acidification with a strong acid to obtain an acid oil which might be further used. In the present study, acidification with HCl was performed and compared to an alternative process of enzymatic hydrolysis with hexane as organic solvent to enable the direct recovery of soaps and lipids aiming at further integration within a biofuel production process. The best condition achieved in the first case was 10 wt.% of HCl allowing to obtain FFA content of around 60 wt.% and mass yield of 43 wt.%; and, considering the moisture content of the soapstock (47 wt.%), the soaps were converted into FFA efficiently. Regarding the enzymatic hydrolysis using 10 wt.% of enzyme and 1:8 of soapstock: hexane mass ratio, a final FFA content of around 36 wt.% was obtained, showing the hydrolysis of glycerides present in the soapstock. © 2020 Taylor & Francis Group, London, UK.

Language: English

Type (Professor's evaluation): Scientific