Mathematical modelling of supercritical fluid extraction of liquid lanoline from raw wool. Solubility and mass transfer rate parameters
A new mathematical model is presented for the supercritical fluid extraction of lanoline from wool using near-critical ethanol-modified CO2, using our previous experimental data. The model is intended to account for the extraction of lanoline at conditions well above its melting point (60–80 °C) and...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2020 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/340024 |
| Acceso en línea: | https://hdl.handle.net/2117/340024 https://dx.doi.org/10.1016/j.cherd.2020.10.013 |
| Access Level: | acceso abierto |
| Palabra clave: | Lanolin Wool-fat Wool Solution (Chemistry) Mass transfer Extraction Lanoline Raw wool Solubility Near-critical CO2 Mass-transfer Lanolina Llana -- Greix Llana Solució (Química) Transferència de massa Àrees temàtiques de la UPC::Enginyeria química |
| Sumario: | A new mathematical model is presented for the supercritical fluid extraction of lanoline from wool using near-critical ethanol-modified CO2, using our previous experimental data. The model is intended to account for the extraction of lanoline at conditions well above its melting point (60–80 °C) and pressures up to 150 bar. The model parameters are a Henry-type fluid-to-liquid partition coefficient for lanoline, K = Cg/CL, and a fluid-side mass-transfer coefficient, kG. For Re ~1, K is independent of velocity and wool packing density, but increases with pressure (K = 4 - 15 × 10-4). kG is found to be independent of temperature; it increases with velocity, decreases with pressure, and increases with wool packing density. The values found are kG = 5.66 × 10-6 m/s (70 bar) and kG = 1.51 × 10-6 m/s (150 bar) |
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