Results 41 to 50 of about 387 (144)

Obtención de parámetros de interacción entre moléculas en métodos UNIQUAC para sistemas con electrolitos disueltos mediante primeros principios [PDF]

, 2014
El objetivo principal de este trabajo fue explorar la posibilidad de obtener los parámetros de interacción requeridos por el modelo UNIQUAC para el cálculo de coeficientes de actividad en soluciones electrolíticas sin necesidad de recurrir a datos ...
Ortiz Corrales, Julián Andrés
core  

Prediction of Mineral Scale Formation in Geothermal and Oilfield Operations using the Extended UNIQUAC Model. Part I: Sulphate Scaling Minerals

, 2005
Pressure parameters are added to the Extended UNIQUAC model presented by Thomsen and Rasmussen (1999). The improved model has been used for correlation and prediction of solid-liquid equilibrium (SLE) of scaling minerals (CaSO4, CaSO4·2H2O, BaSO4 and ...
Stenby, Erling Halfdan, Garcia, Ada V., Thomsen, Kaj   +2 more
core  

Thermodynamic modelling of the solubility in piperazine (PZ) promoted aqueous solutions of methyldiethanolamine (MDEA) using the extended UNIQUAC

Chemical Engineering Research and Design
The solid-liquid equilibria (SLE) of the binary systems piperazine (PZ)-H2O and methyldiethanolamine (MDEA)-H2O and the ternary system MDEA-PZ-H2O were measured in this work using a modified Beckmann setup. 63 new SLE data points were created for PZ-H2O, MDEA-H2O, and MDEA-PZ-H2O.
Randi Neerup, Kalle L. Øbro, Maia B. Thyme, Gry A. Nilsson, Kaj Thomsen, Philip L. Fosbøl   +5 more
openaire   +1 more source

Measurements and modelling of FeCO₃ solubility in water relevant to corrosion and CO₂ mineralization

, 2023
FeCO3 is present as a CO2 corrosion product in many industrial processes and takes part in the natural CO2 mineralization process. This work presents the solid-liquid equilibrium of the system FeCO3-H2O at 5-120 °C.
Løge, Isaac A., Kontogeorgis, Georgios M., Fosbøl, Philip L., Neerup, Randi, Thomsen, Kaj   +4 more
core   +1 more source

Experimental and theoretical study on liquid-liquid equilibrium of 1-butanol+water+NaNO3 at 25 and 35°C

, 2010
In this work liquid-liquid equilibria (LLE) in the system containing 1-butanol-water-sodium nitrate at temperatures of 25 and 35°C has been investigated experimentally and theoretically. The extended UNIQUAC model has previously been used for correlation
S. Mojtaba Seyedi, Hesamoddin Rabiee, Bahman Behzadi, Behzadi, Bahman, Rabiee, Hesamoddin, Dehghani, Mohammad Reza, Mohammad Reza Dehghani, Pirahmadi, Fatemeh, Seyedi, S. Mojtaba, Fatemeh Pirahmadi   +9 more
core   +1 more source

Comparison of two electrolyte models for the carbon capture with aqueous ammonia

, 2012
Post-combustion carbon capture is attracting much attention due to the fact that it can be retrofitted on existing coal power plants. Among the most interesting technologies is the one that employs aqueous ammonia solutions to absorb the generated carbon
Macchi, Ennio, V. Darde, K. Thomsen, Darde, Victor, Bonalumi, Davide, W. J. M. van Well, Thomsen, Kaj, van Well, Willy J.M., Valenti, Gianluca   +8 more
core   +1 more source

Simultaneous Description of Activity Coefficients and Solubility with eCPA [PDF]

, 2017
In the many developments of electrolyte equations of state presented over the past decades, several different properties have been in focus. A property that has not been widely used as a fitting property is salt solubility.
Schlaikjer, Anders, Kontogeorgis, Georgios, Thomsen, Kaj   +2 more
core   +1 more source

Prediction and experimental determination of the solubility of exotic scales at high temperatures - Zinc sulfide

, 2016
The presence of "exotic" scale such as Zinc Sulfide (ZnS), Lead Sulfide (PbS) and Iron Sulfide (FeS) in HP/HT reservoirs has been identified. "Exotic" scale materials come as a new challenge in HP/HT reservoirs.
Philip Loldrup Fosbøl, D. C. Figueroa, Fosbøl, Philip Loldrup, Kaj Thomsen, Thomsen, Kaj, Carolina Figueroa Murcia, Diana   +5 more
core   +1 more source

Solubility of Barium Sulfate in Water at Elevated Temperatures and Pressures. [PDF]

ACS Omega, 2023
Shi M, Corrêa LFF, Thomsen K, Fosbøl PL.   +3 more
europepmc   +1 more source

Correlation and Prediction of Thermal Properties and Phase Behaviour for a Class of Aqueous Electrolyte Systems

, 1996
An extended UNIQUAC model is used to describe phase behaviour (VLE, SLE) and thermal properties (heat of mixing, heat capacity) for aqueous solutions containing ions like (Na+, K+, H+) (Cl-, NO3-, SO4--,OH-, CO3--, HCO3-).
Rasmussen, Peter, Gani, Rafiqul, Thomsen, Kaj   +2 more
core   +1 more source