Search Results - "Núñez, Gonzalo A."

Radial Variations in Axial Velocity Affect Supercritical CO2 Extraction of Lipids from Pre-pressed Oilseeds by del Valle, José M, Núñez, Gonzalo A., Díaz, J. Facundo, Gelmi, Claudio A.

“…Packed beds of spherical particles in a cylindrical vessel have a high porosity region next to the vessel wall that allows preferential fluid flow…”
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Solubilities in Supercritical Carbon Dioxide of (2E,6E)-3,7,11-Trimethyldodeca-2,6,10-trien-1-ol (Farnesol) and (2S)-5,7-Dihydroxy-2-(4-hydroxyphenyl)chroman-4-one (Naringenin) by Núñez, Gonzalo A, del Valle, José M, de la Fuente, Juan C

“…We measured the solubility in supercritical carbon dioxide (CO2) of farnesol [(2E,6E)-3,7,11-trimethyldodeca-2,6,10-trien-1-ol] and naringenin…”
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Supercritical transesterification of microalgae triglycerides for biodiesel production: Effect of alcohol type and co-solvent by Tobar, Maira, Núñez, Gonzalo A.

“…[Display omitted] •Co-solvent allows supercritical transesterification (ST) at temperatures ≤300 °C.•Temperature (T) and CO2/methanol ratio have positive…”
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Simulation of a flexible multi-vessel extraction plant with counter-current contacting between a solid substrate and supercritical CO2 by Toledo, Felipe R., García-Serna, Juan, Núñez, Gonzalo A., del Valle, José M.

“…•Program that simulates the operation of a multi-vessel SC-CO2 extraction plant.•Extraction vessels are connected in series operating in a counter-current…”
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Supercritical CO2 extraction of pinocembrin from Lippia origanoides distillation residues. 2. Mathematical modeling of mass transfer kinetics as a function of substrate pretreatment by Arias, Julián, Martínez, Jairo, Stashenko, Elena, del Valle, José M., Núñez, Gonzalo A.

“…Lippia origanoides and L. graveolens are natural sources of essential oils and compounds with bioactivity (e.g., flavonoids). The objective of this work was to…”
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Pressure drop may negatively impact supercritical CO2 extraction of citrus peel essential oils in an industrial-size extraction vessel by del Valle, José Manuel, Calderón, Diego, Núñez, Gonzalo A.

“…[Display omitted] •LDF model describes citrus peel extraction using P/T-independent microstructural factor.•Bed porosity is the main parameter affecting…”
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Separation of Isoeugenol from Methylcyclohexane as a Model Mixture of Biojet Fuel Purification: Solvent Selection and Liquid–Liquid Equilibrium by Espinoza-Cartagena, Franco, Ormazábal-Latorre, Sebastián, Pazo-Carballo, César, Gajardo-Parra, Nicolás F., Núñez, Gonzalo A., Garrido, José Matías, Cea-Klapp, Esteban, Santiago, Rubén, Held, Christoph, Canales, Roberto I.

“…The biorefinery concept emerged as an opportunity to reduce the negative effects of climate change and as a potential source of products for the fuel industry,…”
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Particle size distribution and stratification of pelletized oilseeds affects cumulative supercritical CO2 extraction plots by del Valle, José M., Carrasco, Constanza V., Toledo, Felipe R., Núñez, Gonzalo A.

“…[Display omitted] •Empirically modified LDF model was adapted to account for particle size distribution.•Empirically modified LDF model includes Urrego et…”
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Supercritical CO2 oilseed extraction in multi-vessel plants. 3. Effect of extraction pressure and plant size on production cost by Núñez, Gonzalo A., del Valle, José M., Navia, Daniel

“…[Display omitted] •Extraction pressure (P) positively affects the production cost (CPC) of oilseeds.•Capital costs of SFE plants depends on P, number and…”
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Supercritical CO2 oilseed extraction in multi-vessel plants. 2. Effect of number and geometry of extractors on production cost by Núñez, Gonzalo A., del Valle, José M.

“…•Production cost (CPC) can be reduced by increasing specific mass flow rate of CO2 (q).•CPC does not depend on L/D ratio of extraction vessel for constant…”
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Supercritical CO2 oilseed extraction in multi-vessel plants. 1. Minimization of operational cost by del Valle, José M., Núñez, Gonzalo A., Aravena, Raúl I.

“…•Operational cost of multi-vessel SFE plants decreases as particle size (dp) decreases.•If dp≤1mm, extraction results in a wave of oil-saturated CO2 moving in…”
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Equilibrium partition of rapeseed oil between supercritical CO2 and prepressed rapeseed by Urrego, Freddy A., Núñez, Gonzalo A., Donaire, Yazmin D., del Valle, José M.

“…•Oil partition was measured by recirculating the CO2 phase up to equilibrium prior to sampling.•Residual oil content in seed was back-estimated using mass…”
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Mathematical simulation of heat and mass transfer during controlled depressurization of supercritical CO2 in extraction vessels by Murias, M. Soledad, del Valle, José M., Núñez, Gonzalo A.

“…[Display omitted] •Vessel depressurization times (td) can be estimated by heat transfer simulation.•td increases with vessel volume (V) and initial CO2…”
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Thermodynamic properties of CO2 during controlled decompression of supercritical extraction vessels by Richter, Eduardo A., del Valle, José M., Núñez, Gonzalo A.

“…•Decompressions at constant valve opening follow near-adiabatic, transition, and post-pseudocritical stages.•Vented flow during decompression is a choked-type…”
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Simulation of a supercritical carbon dioxide extraction plant with three extraction vessels by Núñez, Gonzalo A., Gelmi, Claudio A., del Valle, José M.

“…► New algorithm to simulate a supercritical fluid extraction industrial plant. ► Mass transfer in a supercritical fluid extraction plant with three or more…”
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Supercritical CO2 extraction of pelletized oilseeds: Representation using a linear driving force model with a nonlinear sorption isotherm by Toledo, Felipe R., del Valle, José M., Opazo, Álvaro P., Núnez, Gonzalo A.

“…This work develops a general, predictive model for the SuperCritical (SC) CO2 extraction of pelletized oilseeds. Cumulative SC-CO2 extraction curves of small…”
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