Results 11 to 20 of about 387 (144)

Using Reaktoro for mineral and gas solubility calculations with the Extended UNIQUAC model

Applied Geochemistry
The extended UNIQUAC model is a thermodynamic model able to estimate thermodynamic properties of aqueous electrolyte solutions under a wide range of temperature, pressure, and composition conditions. Thermodynamic properties include species activity coefficients, excess molar Gibbs energy, excess molar enthalpy, excess molar heat capacity.
Allan M. M. Leal, Tim Tambach, Diego Volpatto, Xiaodong Liang, Philip Loldrup Fosbøl, Kaj Thomsen   +5 more
openaire   +4 more sources

Thermodynamic modeling using extended UNIQUAC and COSMO-RS-ES models: Case study of the cesium nitrate-water system over a large range of temperatures

Fluid Phase Equilibria, 2023
A comparison of two thermodynamic models is presented using the water-cesium nitrate system as case study. Both models were able to model the thermodynamic properties such as the osmotic coefficient, vapor pressure, mean activity coefficient and solubility with good accuracy.
Mouad Arrad, Kaj Thomsen, Simon Müller, Irina Smirnova   +3 more
openaire   +3 more sources

Thermodynamic Modelling of Mdea(Aq)-Nh3(Aq)-K2co3(Aq)-Co2(Aq) Using the Extended Uniquac Model

SSRN Electronic Journal, 2022
The development of advanced processes for carbon dioxide capture requires reliable thermodynamic models to ensure accurate process design. This work presents an optimized parameter set of the Extended UNIQUAC model for advanced mixed solvent solutions containing CO2-MDEA-NH3-K2CO3 in water.
Lucas Farias Falcchi Corrêa, Kaj Thomsen, Philip Loldrup Fosbøl   +2 more
openaire   +3 more sources

Experimental Validation of Modeling Approaches Describing the Crystallization of Pure Triacylglycerides and Their Mixtures: A Review. [PDF]

Compr Rev Food Sci Food Saf
ABSTRACT Lipids are essential macronutrients, with the ability to solubilize and enhance the uptake of specific micronutrients (e.g., vitamins A, D, E, and K). Solid fats provide desirable texture and palatability to food products, making them a key ingredient for food and particularly bakery products, ice cream, or confectionery.
Lessona M, Cros A, Sagalowicz L, Harshe Y, Buffo A, Simone E.   +5 more
europepmc   +2 more sources

Modeling and Characterization of Liquid Vapor Equilibrium of N-methyl-1,3-Propanediamine for CO2 Capture - Using the Extended UNIQUAC Framework [PDF]

, 2011
In this work the loaded MAPA system has been thermodynamically characterized. This was done by measuring the phase- and chemical equilibrium in the laboratory, as vapor - liquid - equilibrium data. A thermodynamical model that was based on the extended UNIQUAC activity coefficient framework was used in an attempt to model these data.
Jens, Christian Morten
core   +4 more sources

Improvement of Phenolic Compound and Anthocyanin Extraction Efficiency From Clitoria ternatea by Autogenous Pressurization Method in a Sealed‐Vessel and Determination of Anthocyanin Compounds by LC‐HRMS [PDF]

Food Sci Nutr
Closed‐vessel extraction under autogenous pressure (CVE‐AP) enhanced anthocyanin and phenolic compound recovery from Clitoria ternatea by improving solvent penetration and mass transfer while preserving flavonoid profiles confirmed by LC‐HRMS. ABSTRACT Clitoria ternatea L.
Nguyen K, Tran T, Dong T.
europepmc   +2 more sources

Multiplicities in thermodynamic activity coefficients

AIChE Journal, Volume 69, Issue 12, December 2023., 2023
Abstract Thermodynamic activity coefficients play an essential role in the description of phase equilibria, which are fundamental to the simulation and optimization of all separation processes. Although it is known that multiplicities with respect to binary interaction parameters can occur, no systematic study of these multiplicities has been ...
Jennifer Werner, Tobias Seidel, Ramzi Jafar, Raoul Heese, Hans Hasse, Michael Bortz   +5 more
wiley   +1 more source

Superstructure optimization of a microalgal biorefinery design with life cycle assessment‐based and economic objectives

Biofuels, Bioproducts and Biorefining, Volume 17, Issue 6, Page 1515-1527, November/December 2023., 2023
Abstract We present a multi‐objective optimization framework for the design of an algal biorefinery with multiple target products. Four environmental endpoint indicators and the economic performance are used as objective functions following the life cycle assessment (LCA) methodology.
Johannes Kopton, Liisa K. Rihko‐Struckmann, Laura König‐Mattern, Kai Sundmacher   +3 more
wiley   +1 more source

Development of an industrial sustainable process for wax esters production: enzyme immobilization, process optimization, and plant simulation

Journal of Chemical Technology &Biotechnology, Volume 98, Issue 9, Page 2295-2304, September 2023., 2023
Abstract BACKGROUND As a result of the ban on whaling, there has been a shortage of spermaceti, a natural product with applications in cosmetics and pharmaceuticals. A green and sustainable process for the biocatalytic synthesis of a wax ester mixture analogue to natural spermaceti is presented in this paper.
M. Claudia Montiel, Mar Serrano‐Arnaldos, Clara Yagüe, Salvadora Ortega‐Requena, Fuensanta Máximo, Josefa Bastida   +5 more
wiley   +1 more source

Estimation of UNIQUAC-NRF Model Parameters for NH3-CO2-H2O System [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2005
Vapor-liquid equilibrium in NH3-CO2-H2O system at high pressures has been studied. The UNIQUAC-NRF model for this system was extended by using the Goppert 4 maurer reported datas.
Hassan Pahlevanzadeh, Amir Mohseni Ahooei   +1 more
doaj