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- Title
Kinetic models for degumming and bleaching of phospholipids from crude palm oil using citric acid and Super Flo B80® and Tonsil®.
- Authors
Serrano-Bermudez, Luis Miguel; Monroy-Pefia, Camilo Antonio; Moreno, Dario; Abril, Andrés; Nino, Anderson D. Imbachi; Riascos, Carlos Arturo Martinez; Hurtado, Gustavo Buitrago; Rincón, Paulo Cesar Nanidez
- Abstract
Degumming and bleaching stages o f vegetable oil refining processes are required to achieve the phosphorus content specification (610 mg/kg) reducing gums deposit during storage. Studies of degumming stage using citric acid are focused on statistical models, while stud- ies of bleaching stage are focused on pigment removal. Therefore, the availability of kinetic models is limited. The purpose of this study was to propose kinetic models for phosphatides removal from crude palm oil during both degumming and bleaching stages. During degum- ming, the effects of the ratio citric acid to crude palm oil (0.0237,0.077,0.25,0.55, and 0.85 wt%) and the citric acid concentration in the aqueous solution added to the crude palm oil (15, 30, and 45 wt%) both on phosphorus removal were studied. For bleaching, phospho- rus removal was assessed changing the dose (0.25,0.45, and 0.65 wt%) of two adsorbent earths (SuperFlo B80® and Tonsil®). The best fit with experimental data was obtained using reversible first-order kinetic models for both degumming and bleaching stages. Prediction using the models presented in this work suggests that the citric acid and bleaching earth doses ofO.015 wt% and 0.047 wt%, respectively, are enough to reduce the phosphorus content from 35 ppm to product specification in 30 min contact time in each stage.
- Subjects
CITRIC acid; SUPERACIDS; PHOSPHOLIPIDS; TECHNICAL specifications; PETROLEUM refining; VEGETABLE oils
- Publication
Food & Bioproducts Processing: Transactions of the Institution of Chemical Engineers Part C, 2021, Vol 129, p75
- ISSN
0960-3085
- Publication type
Article
- DOI
10.1016/j.fbp.2021.07.005