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Javier Fontalvo - One of the best experts on this subject based on the ideXlab platform.
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liquid liquid equilibrium and molecular toxicity of active and inert diluents of the organic mixture tri iso octylamine Dodecanol dodecane as a potential liquid membrane for lactic acid removal
Journal of Chemical & Engineering Data, 2019Co-Authors: Alan D. Pérez, Verónica M. Gómez, Sneyder Rodriguezbarona, Javier FontalvoAbstract:Lactic acid can be in situ removed from a fermentation broth through reactive liquid extraction or a liquid membrane to enhance the fermentation process. The organic mixture tri-iso-octylamine (TiOA)/Dodecanol/dodecane at 10 vol % of the amine is a potential organic mixture for lactic acid removal. Liquid–liquid equilibria with lactic acid aqueous solutions and molecular toxicity on the bacteria Lactobacillus casei ATCC 393 were measured with several Dodecanol proportions in dodecane (0 to 90 vol %) and 10 vol % TiOA as potential solvents or membrane phases for LA removal from a fermentation broth. Effects of the organic phase on the bacteria as cell growth, biomass production, glucose consumption, productivity, and product to biomass yield are analyzed. Dodecanol increases the lactic acid chemical equilibrium constant for the liquid–liquid equilibria, while increasing the molecular toxicity on the bacteria. However, for Dodecanol concentrations from 30 to 40 vol % the value of the chemical equilibrium co...
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Liquid–Liquid Equilibrium and Molecular Toxicity of Active and Inert Diluents of the Organic Mixture Tri-iso-octylamine/Dodecanol/Dodecane as a Potential Liquid Membrane for Lactic Acid Removal
Journal of Chemical & Engineering Data, 2019Co-Authors: Alan D. Pérez, Verónica M. Gómez, Sneyder Rodríguez-barona, Javier FontalvoAbstract:Lactic acid can be in situ removed from a fermentation broth through reactive liquid extraction or a liquid membrane to enhance the fermentation process. The organic mixture tri-iso-octylamine (TiOA)/Dodecanol/dodecane at 10 vol % of the amine is a potential organic mixture for lactic acid removal. Liquid–liquid equilibria with lactic acid aqueous solutions and molecular toxicity on the bacteria Lactobacillus casei ATCC 393 were measured with several Dodecanol proportions in dodecane (0 to 90 vol %) and 10 vol % TiOA as potential solvents or membrane phases for LA removal from a fermentation broth. Effects of the organic phase on the bacteria as cell growth, biomass production, glucose consumption, productivity, and product to biomass yield are analyzed. Dodecanol increases the lactic acid chemical equilibrium constant for the liquid–liquid equilibria, while increasing the molecular toxicity on the bacteria. However, for Dodecanol concentrations from 30 to 40 vol % the value of the chemical equilibrium co...
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PDMS modified membranes by 1-Dodecanol and its effect on ethanol removal by pervaporation
Separation and Purification Technology, 2019Co-Authors: Juan Alvaro Leon, Javier FontalvoAbstract:Abstract Hydrophobic polydimethylsiloxane (PDMS) membranes in pervaporation are used to remove ethanol compounds from aqueous solutions as fermentation broths. Conventional PDMS membranes, which have been extensively studied, have high fluxes but relatively low selectivities. A new technique to modified PDMS pervaporation membranes is proposed, where a high molecular weight and hydrophobic compound (1-Dodecanol) is inserted in the PDMS polymeric layer at several concentrations. The effect of 1-Dodecanol concentration in the PDMS layer on flux and selectivity for ethanol removal has been measured. The unmodified and modified PDMS layers were analyzed by SEM to study the membrane layer morphology. Also, TGA and DTG were performed to estimate the 1-Dodecanol composition in the PDMS layer remaining after membrane deposition and curing. Pervaporation experiments were carried out at 31 °C for ethanol concentrations in aqueous solutions of 40, 80 and 170 g/L to identify the performance as a function of 1-Dodecanol load in the separation layer. The separation factor increases with the concentrations of 1-Dodecanol in the polymeric layer while total flux decreases. It is known that although PDMS is a hydrophobic material a high water permeation occurs due to swelling and the molecular interaction between ethanol and water during the ethanol mass transfer across the membrane. The high hydrophobicity of 1-Dodecanol reduces this behavior. This new approach presents a strategy to obtain more selective polymeric membranes or with modified properties.
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Liquid–Liquid Equilibria of Lactic Acid/WaterSolutions in Tri-iso-octylamine/Dodecane/1-Dodecanol at 306.1, 310.1,and 316.1 K. Experimental Data and Prediction
Journal of Chemical & Engineering Data, 2019Co-Authors: Alan D. Pérez, Sneyder Rodríguez-barona, Javier FontalvoAbstract:The liquid–liquid equilibria of systems that involves lactic acid in the aqueous phase and tri-iso-octylamine with diluents as dodecane and 1-Dodecanol (active or/and inert) were measured experimentally at three temperatures (306.15, 310.15, and 316.15 K). A previous liquid–liquid equilibrium model that is based on Nernst’s distribution law and mass action law equilibrium equations was extended and generalized for stoichiometric ratios (amine/acid) 1:n. The effect of the diluents and the tertiary amine on the liquid–liquid equilibrium is shown and quantified in terms of the predicted values of the distribution coefficient, chemical equilibrium constants, and temperature. The lactic acid concentration in equilibrium for the organic phase decreases as follows: water/LA/TiOA/1-Dodecanol system > water/LA/TiOA/dodecane/1-Dodecanol > system water/LA/TiOA/dodecane system.
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liquid liquid equilibria of lactic acid watersolutions in tri iso octylamine dodecane 1 Dodecanol at 306 1 310 1 and 316 1 k experimental data and prediction
Journal of Chemical & Engineering Data, 2019Co-Authors: Alan D. Pérez, Sneyder Rodriguezbarona, Javier FontalvoAbstract:The liquid–liquid equilibria of systems that involves lactic acid in the aqueous phase and tri-iso-octylamine with diluents as dodecane and 1-Dodecanol (active or/and inert) were measured experimentally at three temperatures (306.15, 310.15, and 316.15 K). A previous liquid–liquid equilibrium model that is based on Nernst’s distribution law and mass action law equilibrium equations was extended and generalized for stoichiometric ratios (amine/acid) 1:n. The effect of the diluents and the tertiary amine on the liquid–liquid equilibrium is shown and quantified in terms of the predicted values of the distribution coefficient, chemical equilibrium constants, and temperature. The lactic acid concentration in equilibrium for the organic phase decreases as follows: water/LA/TiOA/1-Dodecanol system > water/LA/TiOA/dodecane/1-Dodecanol > system water/LA/TiOA/dodecane system.
H. Bailador - One of the best experts on this subject based on the ideXlab platform.
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The influence of temperature on the liquid–liquid–solid equilibria of the ternary system water + ethanol + 1-Dodecanol
Fluid Phase Equilibria, 2005Co-Authors: N Boluda, Vicente Gomis, Francisco Ruiz, H. BailadorAbstract:Abstract The process of recovery by liquid–liquid extraction of ethanol manufactured in a fermentation process could be improved by using solvents as 1-Dodecanol that have a good separation factor. In this work, liquid–liquid equilibrium data for the ternary system water–ethanol–1-Dodecanol have been determined experimentally at 5, 8, 15, 23 and 30 °C. The results show different shapes of the equilibrium diagrams depending on the temperature. A region with three phases (liquid–liquid–solid) appears in the temperature range between 8 and 23 °C. The lowest temperature at which a water–ethanol–Dodecanol mixture cannot be split in two liquid phases has been determined as 8 °C.
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the influence of temperature on the liquid liquid solid equilibria of the ternary system water ethanol 1 Dodecanol
Fluid Phase Equilibria, 2005Co-Authors: N Boluda, Vicente Gomis, Francisco Ruiz, H. BailadorAbstract:Abstract The process of recovery by liquid–liquid extraction of ethanol manufactured in a fermentation process could be improved by using solvents as 1-Dodecanol that have a good separation factor. In this work, liquid–liquid equilibrium data for the ternary system water–ethanol–1-Dodecanol have been determined experimentally at 5, 8, 15, 23 and 30 °C. The results show different shapes of the equilibrium diagrams depending on the temperature. A region with three phases (liquid–liquid–solid) appears in the temperature range between 8 and 23 °C. The lowest temperature at which a water–ethanol–Dodecanol mixture cannot be split in two liquid phases has been determined as 8 °C.
Alan D. Pérez - One of the best experts on this subject based on the ideXlab platform.
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Liquid–Liquid Equilibrium and Molecular Toxicity of Active and Inert Diluents of the Organic Mixture Tri-iso-octylamine/Dodecanol/Dodecane as a Potential Liquid Membrane for Lactic Acid Removal
Journal of Chemical & Engineering Data, 2019Co-Authors: Alan D. Pérez, Verónica M. Gómez, Sneyder Rodríguez-barona, Javier FontalvoAbstract:Lactic acid can be in situ removed from a fermentation broth through reactive liquid extraction or a liquid membrane to enhance the fermentation process. The organic mixture tri-iso-octylamine (TiOA)/Dodecanol/dodecane at 10 vol % of the amine is a potential organic mixture for lactic acid removal. Liquid–liquid equilibria with lactic acid aqueous solutions and molecular toxicity on the bacteria Lactobacillus casei ATCC 393 were measured with several Dodecanol proportions in dodecane (0 to 90 vol %) and 10 vol % TiOA as potential solvents or membrane phases for LA removal from a fermentation broth. Effects of the organic phase on the bacteria as cell growth, biomass production, glucose consumption, productivity, and product to biomass yield are analyzed. Dodecanol increases the lactic acid chemical equilibrium constant for the liquid–liquid equilibria, while increasing the molecular toxicity on the bacteria. However, for Dodecanol concentrations from 30 to 40 vol % the value of the chemical equilibrium co...
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liquid liquid equilibrium and molecular toxicity of active and inert diluents of the organic mixture tri iso octylamine Dodecanol dodecane as a potential liquid membrane for lactic acid removal
Journal of Chemical & Engineering Data, 2019Co-Authors: Alan D. Pérez, Verónica M. Gómez, Sneyder Rodriguezbarona, Javier FontalvoAbstract:Lactic acid can be in situ removed from a fermentation broth through reactive liquid extraction or a liquid membrane to enhance the fermentation process. The organic mixture tri-iso-octylamine (TiOA)/Dodecanol/dodecane at 10 vol % of the amine is a potential organic mixture for lactic acid removal. Liquid–liquid equilibria with lactic acid aqueous solutions and molecular toxicity on the bacteria Lactobacillus casei ATCC 393 were measured with several Dodecanol proportions in dodecane (0 to 90 vol %) and 10 vol % TiOA as potential solvents or membrane phases for LA removal from a fermentation broth. Effects of the organic phase on the bacteria as cell growth, biomass production, glucose consumption, productivity, and product to biomass yield are analyzed. Dodecanol increases the lactic acid chemical equilibrium constant for the liquid–liquid equilibria, while increasing the molecular toxicity on the bacteria. However, for Dodecanol concentrations from 30 to 40 vol % the value of the chemical equilibrium co...
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Liquid–Liquid Equilibria of Lactic Acid/WaterSolutions in Tri-iso-octylamine/Dodecane/1-Dodecanol at 306.1, 310.1,and 316.1 K. Experimental Data and Prediction
Journal of Chemical & Engineering Data, 2019Co-Authors: Alan D. Pérez, Sneyder Rodríguez-barona, Javier FontalvoAbstract:The liquid–liquid equilibria of systems that involves lactic acid in the aqueous phase and tri-iso-octylamine with diluents as dodecane and 1-Dodecanol (active or/and inert) were measured experimentally at three temperatures (306.15, 310.15, and 316.15 K). A previous liquid–liquid equilibrium model that is based on Nernst’s distribution law and mass action law equilibrium equations was extended and generalized for stoichiometric ratios (amine/acid) 1:n. The effect of the diluents and the tertiary amine on the liquid–liquid equilibrium is shown and quantified in terms of the predicted values of the distribution coefficient, chemical equilibrium constants, and temperature. The lactic acid concentration in equilibrium for the organic phase decreases as follows: water/LA/TiOA/1-Dodecanol system > water/LA/TiOA/dodecane/1-Dodecanol > system water/LA/TiOA/dodecane system.
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liquid liquid equilibria of lactic acid watersolutions in tri iso octylamine dodecane 1 Dodecanol at 306 1 310 1 and 316 1 k experimental data and prediction
Journal of Chemical & Engineering Data, 2019Co-Authors: Alan D. Pérez, Sneyder Rodriguezbarona, Javier FontalvoAbstract:The liquid–liquid equilibria of systems that involves lactic acid in the aqueous phase and tri-iso-octylamine with diluents as dodecane and 1-Dodecanol (active or/and inert) were measured experimentally at three temperatures (306.15, 310.15, and 316.15 K). A previous liquid–liquid equilibrium model that is based on Nernst’s distribution law and mass action law equilibrium equations was extended and generalized for stoichiometric ratios (amine/acid) 1:n. The effect of the diluents and the tertiary amine on the liquid–liquid equilibrium is shown and quantified in terms of the predicted values of the distribution coefficient, chemical equilibrium constants, and temperature. The lactic acid concentration in equilibrium for the organic phase decreases as follows: water/LA/TiOA/1-Dodecanol system > water/LA/TiOA/dodecane/1-Dodecanol > system water/LA/TiOA/dodecane system.
N Boluda - One of the best experts on this subject based on the ideXlab platform.
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The influence of temperature on the liquid–liquid–solid equilibria of the ternary system water + ethanol + 1-Dodecanol
Fluid Phase Equilibria, 2005Co-Authors: N Boluda, Vicente Gomis, Francisco Ruiz, H. BailadorAbstract:Abstract The process of recovery by liquid–liquid extraction of ethanol manufactured in a fermentation process could be improved by using solvents as 1-Dodecanol that have a good separation factor. In this work, liquid–liquid equilibrium data for the ternary system water–ethanol–1-Dodecanol have been determined experimentally at 5, 8, 15, 23 and 30 °C. The results show different shapes of the equilibrium diagrams depending on the temperature. A region with three phases (liquid–liquid–solid) appears in the temperature range between 8 and 23 °C. The lowest temperature at which a water–ethanol–Dodecanol mixture cannot be split in two liquid phases has been determined as 8 °C.
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the influence of temperature on the liquid liquid solid equilibria of the ternary system water ethanol 1 Dodecanol
Fluid Phase Equilibria, 2005Co-Authors: N Boluda, Vicente Gomis, Francisco Ruiz, H. BailadorAbstract:Abstract The process of recovery by liquid–liquid extraction of ethanol manufactured in a fermentation process could be improved by using solvents as 1-Dodecanol that have a good separation factor. In this work, liquid–liquid equilibrium data for the ternary system water–ethanol–1-Dodecanol have been determined experimentally at 5, 8, 15, 23 and 30 °C. The results show different shapes of the equilibrium diagrams depending on the temperature. A region with three phases (liquid–liquid–solid) appears in the temperature range between 8 and 23 °C. The lowest temperature at which a water–ethanol–Dodecanol mixture cannot be split in two liquid phases has been determined as 8 °C.
Francisco Ruiz - One of the best experts on this subject based on the ideXlab platform.
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The influence of temperature on the liquid–liquid–solid equilibria of the ternary system water + ethanol + 1-Dodecanol
Fluid Phase Equilibria, 2005Co-Authors: N Boluda, Vicente Gomis, Francisco Ruiz, H. BailadorAbstract:Abstract The process of recovery by liquid–liquid extraction of ethanol manufactured in a fermentation process could be improved by using solvents as 1-Dodecanol that have a good separation factor. In this work, liquid–liquid equilibrium data for the ternary system water–ethanol–1-Dodecanol have been determined experimentally at 5, 8, 15, 23 and 30 °C. The results show different shapes of the equilibrium diagrams depending on the temperature. A region with three phases (liquid–liquid–solid) appears in the temperature range between 8 and 23 °C. The lowest temperature at which a water–ethanol–Dodecanol mixture cannot be split in two liquid phases has been determined as 8 °C.
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the influence of temperature on the liquid liquid solid equilibria of the ternary system water ethanol 1 Dodecanol
Fluid Phase Equilibria, 2005Co-Authors: N Boluda, Vicente Gomis, Francisco Ruiz, H. BailadorAbstract:Abstract The process of recovery by liquid–liquid extraction of ethanol manufactured in a fermentation process could be improved by using solvents as 1-Dodecanol that have a good separation factor. In this work, liquid–liquid equilibrium data for the ternary system water–ethanol–1-Dodecanol have been determined experimentally at 5, 8, 15, 23 and 30 °C. The results show different shapes of the equilibrium diagrams depending on the temperature. A region with three phases (liquid–liquid–solid) appears in the temperature range between 8 and 23 °C. The lowest temperature at which a water–ethanol–Dodecanol mixture cannot be split in two liquid phases has been determined as 8 °C.