Results 121 to 130 of about 387 (144)
Modeling of heavy metal salt solubility using the extended UNIQUAC model
AIChE Journal, 2002 AbstractSolid–liquid equilibria in complex aqueous systems involving a heavy metal cation (Mn2+, Fe2+, Co2+, Ni2+, Cu2+, or Zn2+) and one or more ions for which Extended UNIQUAC parameters have been published previously are modeled using the Extended UNIQUAC model.
Maria C. Iliuta +2 more
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Modeling of Carbon Dioxide Absorption by Aqueous Ammonia Solutions Using the Extended UNIQUAC Model
Industrial & Engineering Chemistry Research, 2010 An upgraded version of the extended UNIQUAC thermodynamic model for the carbon dioxide−ammonia−water system has been developed, on the basis of the original version proposed by Thomsen and Rasmussen (Chem. Eng. Sci. 1999, 54, 1787). The original model was valid in the temperature range 0−110 °C, the pressure range 0−10 MPa, and the concentration range ...
Victor Darde +3 more
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A modified extended UNIQUAC model for proteins
Fluid Phase Equilibria, 2004A modification of the extended UNIQUAC model is proposed for the description of the non-ideality of protein solutions. Here, the Staverman–Guggenheim combinatorial contribution used in extended UNIQUAC model is replaced by the Flory–Huggins term to take into account the size differences between the protein and solvent.
João A P Coutinho, Fernando L P Pessôa
exaly +2 more sources
Journal of Solution Chemistry, 2016
Certain alkyl ammonium salts are called ionic liquids They can be used as green solvents without toxicity, effects on the ozone layer depletion, effects on climate change, and any other significant environmental impacts; in this regard knowledge about their thermo-physical properties are really important.
Vahid Akbari +2 more
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Certain alkyl ammonium salts are called ionic liquids They can be used as green solvents without toxicity, effects on the ozone layer depletion, effects on climate change, and any other significant environmental impacts; in this regard knowledge about their thermo-physical properties are really important.
Vahid Akbari +2 more
exaly +2 more sources
Modeling the binary system Mn(NO3)2–H2O with the extended universal quasichemical (UNIQUAC) model
Fluid Phase Equilibria, 2015Abstract In this study, new experimental data for the binary system of Mn(NO3)2–H2O are presented in the temperature range from −29 °C to 35 °C at atmospheric pressure using the conductometric method, this synthetic method is an accurate experimental procedure in the determination of the solubility of salts in aqueous solutions.
Mouad Arrad +2 more
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Chemical Engineering Science, 2011
Abstract New experimental data for vapor–liquid equilibrium of CO 2 in aqueous monoethanolamine solutions are presented for 15, 30, 45 and 60 mass% MEA and from 40 to 120 °C. CO 2 partial pressures over loaded MEA solutions were measured using a low temperature equilibrium apparatus while total pressures were measured with a high temperature ...
Ugochukwu E Aronu +2 more
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Abstract New experimental data for vapor–liquid equilibrium of CO 2 in aqueous monoethanolamine solutions are presented for 15, 30, 45 and 60 mass% MEA and from 40 to 120 °C. CO 2 partial pressures over loaded MEA solutions were measured using a low temperature equilibrium apparatus while total pressures were measured with a high temperature ...
Ugochukwu E Aronu +2 more
exaly +2 more sources
Journal of Solution Chemistry, 2016 Solubility modeling in the binary system Fe(NO3)3–H2O, Co(NO3)2–H2O and the ternary system Fe(NO3)3–Co(NO3)2–H2O is presented. The extended UNIQUAC model was applied to the thermodynamic assessment of the investigated systems. The model parameters obtained were regressed simultaneously using the available databank but with more experimental points ...
Mouad Arrad +3 more
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Industrial & Engineering Chemistry Research, 2018 Naturally occurring gas hydrates are of great importance as a strategic energy source. Hydrates affect coastal sediment stability, global climate change, and ocean carbon cycling. It is vital to understand the thermodynamic conditions of gas hydrates to control/manage and inhibit hydrate formation.
Javad Kondori +2 more
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Fluid Phase Equilibria, 1991
Abstract The temperature effect on mutual solubility data for 81 binary systems has been studied by means of UNIQUAC and extended UNIQUAC models. The energy parameters of the models are expressed by a quadratic function of temperature. Among the systems studied 61 systems have an upper critical point, 14 systems have a closed partial miscibility and ...
Isamu Nagata +2 more
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Abstract The temperature effect on mutual solubility data for 81 binary systems has been studied by means of UNIQUAC and extended UNIQUAC models. The energy parameters of the models are expressed by a quadratic function of temperature. Among the systems studied 61 systems have an upper critical point, 14 systems have a closed partial miscibility and ...
Isamu Nagata +2 more
openaire +2 more sources