Results 131 to 140 of about 512 (161)
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Journal of Industrial and Engineering Chemistry, 2012
Abstract Reactive extraction can be used for the recovery of carboxylic acids from fermentation broth. Through the formation of complex with extractants at the two-phase interface, the carboxylic acids are partitioned into organic solvents. But, the recovery of carboxylic acids is interrupted by the conditions of fermentation broth.
Hasan Uslu, Ismail Inci
exaly +2 more sources
Abstract Reactive extraction can be used for the recovery of carboxylic acids from fermentation broth. Through the formation of complex with extractants at the two-phase interface, the carboxylic acids are partitioned into organic solvents. But, the recovery of carboxylic acids is interrupted by the conditions of fermentation broth.
Hasan Uslu, Ismail Inci
exaly +2 more sources
Chemosphere, 2014
Many chemicals with toxic effects to aquatic species are produced every year. To date, linear solvation energy relationship (LSER) models for toxicity prediction to aquatic species are limited to non-polar and polar narcotic compounds. In this study, the Verhaar scheme was used to classify chemicals into five modes of toxic actions.
Jingwen Chen +2 more
exaly +3 more sources
Many chemicals with toxic effects to aquatic species are produced every year. To date, linear solvation energy relationship (LSER) models for toxicity prediction to aquatic species are limited to non-polar and polar narcotic compounds. In this study, the Verhaar scheme was used to classify chemicals into five modes of toxic actions.
Jingwen Chen +2 more
exaly +3 more sources
Separation Science and Technology, 2008
Abstract Levulinic acid, a carboxylic acid containing ketone structure, is a clear to brownish semi‐solid melting at 37°C; soluble in alcohol, ether, and chloroform, levulinic acid can be used as an acidulant in foods and beverages. Organic solutions of amines are being used increasingly to separate organic acids from aqueous mixture solutions by ...
Hasan Uslu
exaly +3 more sources
Abstract Levulinic acid, a carboxylic acid containing ketone structure, is a clear to brownish semi‐solid melting at 37°C; soluble in alcohol, ether, and chloroform, levulinic acid can be used as an acidulant in foods and beverages. Organic solutions of amines are being used increasingly to separate organic acids from aqueous mixture solutions by ...
Hasan Uslu
exaly +3 more sources
Partial solvation parameters and LSER molecular descriptors
The Journal of Chemical Thermodynamics, 2012Abstract The partial solvation parameters (PSP) have been defined recently, on the basis of the insight derived from modern quantum chemical calculations, in an effort to overcome some of the inherent restrictions of the original definition of solubility parameter and expand its range of applications.
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Journal of Chemical Thermodynamics, 2015
Abstract A new polynomial vapor pressure approach for pure solvents is presented. The model is incorporated into the LSER (linear solvation energy relation) based solvation model framework and checked for consistency in reproducing experimental vapor pressures of salt-containing solvent systems.
Aynur Senol
exaly +2 more sources
Abstract A new polynomial vapor pressure approach for pure solvents is presented. The model is incorporated into the LSER (linear solvation energy relation) based solvation model framework and checked for consistency in reproducing experimental vapor pressures of salt-containing solvent systems.
Aynur Senol
exaly +2 more sources
Journal of Colloid and Interface Science, 2015
The compound-specific mechanisms for the sorption of organic contaminants onto cetyltrimethylammonium-saturated bentonite (i.e., CTMA-Bentonite) in water were evaluated by (1)H NMR study and Linear Solvation Energy Relationship (LSER) approach. In (1)H NMR study, comparing with pure CTMAB, the up-field shifts of hydrogen peaks for CH2N(+) and CH3N ...
Lizhong Zhu, , Baoliang Chen
exaly +4 more sources
The compound-specific mechanisms for the sorption of organic contaminants onto cetyltrimethylammonium-saturated bentonite (i.e., CTMA-Bentonite) in water were evaluated by (1)H NMR study and Linear Solvation Energy Relationship (LSER) approach. In (1)H NMR study, comparing with pure CTMAB, the up-field shifts of hydrogen peaks for CH2N(+) and CH3N ...
Lizhong Zhu, , Baoliang Chen
exaly +4 more sources
LSER-based modeling vapor pressures of (solvent+salt) systems by application of Xiang-Tan equation
Chinese Journal of Chemical Engineering, 2015Abstract The study deals with modeling the vapor pressures of (solvent + salt) systems depending on the linear solvation energy relation (LSER) principles. The LSER-based vapor pressure model clarifies the simultaneous impact of the vapor pressure of a pure solvent estimated by the Xiang-Tan equation, the solubility and solvatochromic parameters of ...
Aynur Senol
exaly +2 more sources
Journal of Chromatography A, 2018
Linear solvation energy relationships (LSERs) were applied to retention on hypercrosslinked polystyrene on silica (HC-Tol) to elucidate the type and relative importance of molecular interactions between model solutes and the HC-Tol stationary phase. Classical amino phase and another hypercrosslinked phase (5-HGN) were used as reference columns. On both
Di, Wu, Ping, Jiang, Charles A, Lucy
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Linear solvation energy relationships (LSERs) were applied to retention on hypercrosslinked polystyrene on silica (HC-Tol) to elucidate the type and relative importance of molecular interactions between model solutes and the HC-Tol stationary phase. Classical amino phase and another hypercrosslinked phase (5-HGN) were used as reference columns. On both
Di, Wu, Ping, Jiang, Charles A, Lucy
openaire +2 more sources
Fluid Phase Equilibria, 2006
Abstract Solute descriptors of linear solvation energy relationship (LSER) for dialkyl ethers were examined as a means for improving predictions of their fate and behavior in the environment. LSER solute descriptors consist of the excess molar refraction, the polarizability/dipolarity parameter, the effective hydrogen (H)-bond acidity/basicity ...
Endo, Satoshi, Schmidt, Torsten Claus
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Abstract Solute descriptors of linear solvation energy relationship (LSER) for dialkyl ethers were examined as a means for improving predictions of their fate and behavior in the environment. LSER solute descriptors consist of the excess molar refraction, the polarizability/dipolarity parameter, the effective hydrogen (H)-bond acidity/basicity ...
Endo, Satoshi, Schmidt, Torsten Claus
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Analytical and Bioanalytical Chemistry, 2014
The separation properties of six novel stationary phases for gas chromatography, commercially available from Sigma-Aldrich (Supelco) and based on ionic liquids (ILs), were investigated. The linear solvation energy relationship model (LSER) was used to describe the molecular interactions between these stationary phases and 30 solutes. The solutes belong
Waldemar, Weber, Jan T, Andersson
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The separation properties of six novel stationary phases for gas chromatography, commercially available from Sigma-Aldrich (Supelco) and based on ionic liquids (ILs), were investigated. The linear solvation energy relationship model (LSER) was used to describe the molecular interactions between these stationary phases and 30 solutes. The solutes belong
Waldemar, Weber, Jan T, Andersson
openaire +2 more sources