Effect of co-solvents on SC-CO2 extraction of crude oil by consistency test

Rudyk, Svetlana Nikolayevna; Spirov, Pavel; Hussain, Shahid

doi:10.1016/j.supflu.2014.04.003

Cited by 21 publications

(18 citation statements)

References 23 publications

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“…The lipid extraction rates for TPP and ethyl acetate were similar, and hexane and SC-CO 2 were the least efficient methods for lipid extraction with values of 14.6% and 11.9%, respectively. Further optimization of the SC-CO 2 method using co-solvent might improve the extraction yield in a future work, as shown by Rudyk et al [22] for the extraction of nonfood and nonpolar compounds.…”

Section: Resultsmentioning

confidence: 97%

Comparison of Conventional and Sustainable Lipid Extraction Methods for the Production of Oil and Protein Isolate from Edible Insect Meal

Laroche

Perreault

Marciniak

et al. 2019

Foods

104

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Edible insects represent an interesting alternative source of protein for human consumption but the main hurdle facing the edible insect sector is low consumer acceptance. However, increased acceptance is anticipated when insects are incorporated as a processed ingredient, such as protein-rich powder, rather than presented whole. To produce edible insect fractions with high protein content, a defatting step is necessary. This study investigated the effects of six defatting methods (conventional solvents, three-phase partitioning, and supercritical CO2) on lipid extraction yield, fatty profiles, and protein extraction and purification of house cricket (Acheta domesticus) and mealworm (Tenebrio molitor) meals. Ethanol increased the lipid extraction yield (22.7%–28.8%), irrespective of the insect meal used or the extraction method applied. Supercritical CO2 gave similar lipid extraction yields as conventional methods for Tenebrio molitor (T. molitor) (22.1%) but was less efficient for Acheta domesticus (A. domesticus) (11.9%). The protein extraction yield ranged from 12.4% to 38.9% for A. domesticus, and from 11.9% to 39.3% for T. molitor, whereas purification rates ranged from 58.3% to 78.5% for A. domesticus and from 48.7% to 75.4% for T. molitor.

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Section: Resultsmentioning

confidence: 97%

Comparison of Conventional and Sustainable Lipid Extraction Methods for the Production of Oil and Protein Isolate from Edible Insect Meal

Laroche

Perreault

Marciniak

et al. 2019

Foods

104

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“…Co-solvents, especially polar ones such as water, methanol, acetone, ethyl acetate, toluene, petroleum ether, and ethanol, are used as a modifier in CO 2 extraction performance [5][6][7][8]. A co-solvent interacts either with the solute, solvent, or both [5]. Pressure and temperature factors affect interaction and chemical equilibria.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, volatility of compound and physical properties (molecular weight, boiling point, and molecular shape) are other factors that affect the solubility of CO 2 in crude oil [5]. From research done by Rudyk et al [5], Day et al [7], and Fletcher and Heller [11], their results indicated that the solubility of CO 2 in acetone was larger than that in ethanol [7]. The addition of a carbonyl-group component, such as acetone, enables greater extraction of heavier compounds and higher-boiling fractions than that being extracted with the presence of a hydroxyl-group component such as ethanol [5].…”

Section: Introductionmentioning

confidence: 99%

“…From research done by Rudyk et al [5], Day et al [7], and Fletcher and Heller [11], their results indicated that the solubility of CO 2 in acetone was larger than that in ethanol [7]. The addition of a carbonyl-group component, such as acetone, enables greater extraction of heavier compounds and higher-boiling fractions than that being extracted with the presence of a hydroxyl-group component such as ethanol [5]. This occurs because ethanol behaves as a polar and self-associated substance.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Carbonyl and Hydroxyl Compounds Addition on CO2 Injection through Hydrocarbon Extraction Processes

et al. 2020

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CO2 miscible flooding occurs when injection pressure is higher than the minimum miscibility pressure (MMP) which can exceed the fracture pressure. Co-solvents are expected to reduce the MMP by interacting with various hydrocarbons that depend on the polarity and intermolecular forces of solvent and oil. However, there are limited studies that have investigated co-solvent performance in CO2 injection through an extraction process based on oil compositional analysis. This paper is aimed at studying the effects of carbonyl and hydroxyl compounds on oil extraction and also the mutual interactions of CO2-oil-carbonyl and -hydroxyl. The experiment is conducted by using VIPS (viscosity, interfacial tension, pressure-volume, and swelling) and gas chromatography (GC) apparatuses. The compositional results from GC are utilized to analyze the performance of co-solvents, which are further classified based on the carbon number and molecular structure of oil. Acetone is a non-associated polar compound which reacts easily with and assists CO2 to extract polar-aromatic heavy and slightly polar components such as alkenes and straight-chain alkanes, due to high polarizability and low cohesive forces. Ethanol is a self-associated polar compound which has the capability of extracting high-boiling fractions and slightly polar-aromatic components. Moreover, both co-solvents also assist CO2 to extract non-polar components because they have non-polar end in the alkyl group.

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“…Previously, mixtures of scCO 2 with various organic compounds such as acetone, ethanol, dimethyl ether, chlorodifluoromethane, and others were successfully used as the medium for the solubilization of polymers. The effect of increasing the solubility of compounds in scCO 2 is well known and finds application in the catalysis of oxidation reactions, nanocomposite formation, impregnation, chromatography and extraction …”

Section: Introductionmentioning

confidence: 99%

The Effect of the Co‐Solvent on the Aerogel Formation Directly in Supercritical CO₂ Medium

et al. 2020

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A series of flexible hydrophobic siloxane aerogels were obtained by the hydrothiolation reaction in supercritical CO2 medium in the presence of a co‐solvent. The effect of the co‐solvent nature on the aerogel morphology and physico‐mechanical properties were studied. n‐Pentane, a propane/n‐butane mixture, CH2Cl2, dimethyl ether (DME) and 1,1,2‐trichloro‐1,2,2‐trifluoro‐ethane were used as the co‐solvents. The morphology of aerogel particles was studied by SEM. In the case of n‐pentane, propane/n‐butane mixture, CH2Cl2, or DME as the co‐solvents, aerogels with a density of 0.18–0.21 g/cm3 and an average particle size of 0.15‐5.35 μm were obtained. Depending on the morphology, the mechanical properties of aerogels change in the range of 0.2–0.75 MPa (Young's modulus), 38–68 % (compressibility) and 0.11–0.42 MPa (stress rupture). In the case of 1,1,2‐trichloro‐1,2,2‐trifluoro‐ethane as the co‐solvent, the aerogel with an inhomogeneous structure was obtained. All the aerogels studied have a large water contact angle in the range of 142°‐151°.

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Effect of co-solvents on SC-CO2 extraction of crude oil by consistency test

Cited by 21 publications

References 23 publications

Comparison of Conventional and Sustainable Lipid Extraction Methods for the Production of Oil and Protein Isolate from Edible Insect Meal

Comparison of Conventional and Sustainable Lipid Extraction Methods for the Production of Oil and Protein Isolate from Edible Insect Meal

The Effect of Carbonyl and Hydroxyl Compounds Addition on CO2 Injection through Hydrocarbon Extraction Processes

The Effect of the Co‐Solvent on the Aerogel Formation Directly in Supercritical CO₂ Medium

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Effect of co-solvents on SC-CO2 extraction of crude oil by consistency test

Cited by 21 publications

References 23 publications

Comparison of Conventional and Sustainable Lipid Extraction Methods for the Production of Oil and Protein Isolate from Edible Insect Meal

Comparison of Conventional and Sustainable Lipid Extraction Methods for the Production of Oil and Protein Isolate from Edible Insect Meal

The Effect of Carbonyl and Hydroxyl Compounds Addition on CO2 Injection through Hydrocarbon Extraction Processes

The Effect of the Co‐Solvent on the Aerogel Formation Directly in Supercritical CO2 Medium

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The Effect of the Co‐Solvent on the Aerogel Formation Directly in Supercritical CO₂ Medium