LAPSE:2023.35141
Published Article
LAPSE:2023.35141
Modelling and Scaling-Up of a Supercritical Fluid Extraction of Emulsions Process
April 28, 2023
Supercritical CO2 (scCO2) is utilized in the supercritical fluid extraction of emulsions (SFEE) to swiftly extract the organic phase (O) from an O/W emulsion. The dissolved substances in the organic phase precipitate into small particles and remain suspended in the water (W) with the aid of a surfactant. The process can be continuously conducted using a packed column in a counter-current flow of the emulsion and scCO2, at moderate pressure (8−10 MPa) and temperature (37−40 °C). To ensure the commercial viability of this technique, the organic solvent must be separated from the CO2 to facilitate the recirculation of both streams within the process while minimizing environmental impact. Thus, the aim of this work was to design a plant to produce submicron materials using SFEE, integrating the recovery of both solvents. First, experimental equilibrium data of the ternary system involved (CO2/ethyl acetate/water) were fitted with a proper thermodynamic model. Then, simulations of the whole integrated process at different scales were carried out using Aspen Plus®, along with economical evaluations. This work proposes the organic solvent separation with a distillation column. Thus, the two solvents can be recovered and recycled to the process in almost their entirety. Furthermore, the particles in the aqueous raffinate are produced free of solvents and sterilized for further safe use. The costs showed an important economy scale-up. This work could ease the transfer of the SFEE technology to the industry.
Keywords
continuous process, counter-current packed column, scale-up, supercritical carbon dioxide, supercritical fractionation
Suggested Citation
Tirado DF, Cabañas A, Calvo L. Modelling and Scaling-Up of a Supercritical Fluid Extraction of Emulsions Process. (2023). LAPSE:2023.35141
Author Affiliations
Tirado DF: Dirección Académica, Universidad Nacional de Colombia, Sede de La Paz, La Paz 202017, Colombia [ORCID]
Cabañas A: Department of Physical Chemistry, Universidad Complutense de Madrid, Av. Complutense s/n, 28040 Madrid, Spain [ORCID]
Calvo L: Department of Chemical and Materials Engineering, Universidad Complutense de Madrid, Av. Complutense s/n, 28040 Madrid, Spain [ORCID]
Journal Name
Processes
Volume
11
Issue
4
First Page
1063
Year
2023
Publication Date
2023-04-01
Published Version
ISSN
2227-9717
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Original Submission
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PII: pr11041063, Publication Type: Journal Article
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LAPSE:2023.35141
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doi:10.3390/pr11041063
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Apr 28, 2023
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