Alternative Bio-Based Solvents for Extraction of Fat and Oils: Solubility Prediction, Global Yield, Extraction Kinetics, Chemical Composition and Cost of Manufacturing

Abstract

The present study was designed to evaluate the performance of alternative bio-based solvents, more especially 2-methyltetrahydrofuran, obtained from crop’s byproducts for the substitution of petroleum solvents such as hexane in the extraction of fat and oils for food (edible oil) and non-food (bio fuel) applications. First a solvent selection as well as an evaluation of the performance was made with Hansen Solubility Parameters and the COnductor-like Screening MOdel for Realistic Solvation (COSMO-RS) simulations. Experiments were performed on rapeseed oil extraction at laboratory and pilot plant scale for the determination of lipid yields, extraction kinetics, diffusion modeling, and complete lipid composition in term of fatty acids and micronutrients (sterols, tocopherols and tocotrienols). Finally, economic and energetic evaluations of the process were conducted to estimate the cost of manufacturing using 2-methyltetrahydrofuran (MeTHF) as alternative solvent compared to hexane as petroleum solvent.

Protic Ionic Liquids Used as Metal-Forming Green Lubricants for Aluminum: Effect of Anion Chain Length

“…Since the studied PILs are ethanol-and water-soluble along a wide range of compositions 3,35 , samples were cleaned with these solvents before the morphological characterization, with the removal of most of the PIL from the surface. For cleansing the commercial lubricant and given its nature of vegetable oil, the most appropriate is the removal with solvents like n-hexane or tetrahydrofuran 36 . Ethanol is not a good solvent for vegetable oils.…”

An original approach for lipophilic natural products extraction: Use of liquefied n-butane as alternative solvent to n-hexane

“…205e219;Ishida & Chapman, 2009). As examples, studies have been performed regarding the extraction of rapeseed oils using MeTHF Sicaire, Vian, Fine, Joffre et al, 2015), caraway seeds aromas using a-pinene (Filly, Fabiano-Tixier, Fernandez, & Chemat, 2015) and extraction of rice bran oil using limonene (Mamidipally & Liu, 2004). Such solvents have a good solvation power, are non-toxic and biodegradable (Chemat, 2011, p. 9).…”

Improved rapeseed oil extraction yield and qualityviacold separation of ethanol miscella

“…The value of the effective diffusion coefficient estimated by this fitting was D eff = (1.86 ± 0.02) Â 10 À11 m 2 /s. In comparison, Sicaire et al (2015b) found a diffusion coefficient of 0.34 Â 10 À11 m 2 /s for rapeseed flakes in a conventional hexane extraction process (for a temperature of 55°C). The value of the effective diffusion coefficient characterizes the extraction kinetics for a given temperature and solvent type independently of the particle size and solvent/solid ratio.…”

“…In brief, the analysis was based on the presentation of the flakes-solvent mixture as a polydisperse suspension with a known particle size distribution, and application of Crank's equation for diffusion from a monodisperse suspension of spherical particles (Crank, 1975) to each class of particle size j. Only the first term of the complete Crank's diffusion equation was used (as it was previously done by Allaf et al (2014) and Sicaire et al (2015b)), since superior terms had only insignificant impact on the result of analysis at the studied extraction time range, t > 2 min. The total oil extraction yield Y t mod was calculated as a sum of the extraction yield from each particle class j:…”

“…The analysis of oil extraction kinetics was done as described in detail by Allaf et al (2014) and Sicaire et al (2015b). In brief, the analysis was based on the presentation of the flakes-solvent mixture as a polydisperse suspension with a known particle size distribution, and application of Crank's equation for diffusion from a monodisperse suspension of spherical particles (Crank, 1975) to each class of particle size j.…”