Results 1 to 10 of about 155 (101)

Prediction of the isothermal evaporation experiment of actual salt lake brine at 25 ℃ utilizing the extended UNIQUAC model

Desalination and Water Treatment
In the realm of salt lake resource research, 25 °C stands out as the preponderantly adopted temperature for isothermal evaporation experiments. Expediting the exploration of its experimental procedures holds profound implications for the efficacious ...
Yongming Zhang, Shichun Zhang, Yanfang Ma, Aijun Jiao, Zhenhai Fu, Haigang Liu   +5 more
doaj   +4 more sources

Ammonium chloride solid-liquid equilibrium in water-ethanol solutions. Experimental study and interaction parameters fitting for the extended UNIQUAC model

Results in Engineering
Ammonium chloride (NH₄Cl) is widely used in agriculture, medicine, and flame-retardant applications, yet solubility data in mixed solvents remain limited for process design.
Miguel-Ángel Gómez-García, Juan-Camilo Giraldo, Izabela Dobrosz-Gómez   +2 more
doaj   +4 more sources

Optimization of Extended UNIQUAC Model Parameter for Mean Activity Coefficient of Aqueous Chloride Solutions using Genetic+PSO [PDF]

Journal of Chemical and Petroleum Engineering, 2020
In the present study, in order to predict the activity coefficient of inorganic ions, 12 cases of aqueous chloride solution were considered (AClx=1,2; A=Li, Na, K, Rb, Mg, Ca, Ba, Mn, Fe, Co, Ni).
Seyed Hossein Hashemi, Mahmood Dinmohammad , Mehrdad Bagheri   +2 more
doaj   +3 more sources

A machine learning approach for predicting osmotic coefficients and deriving activity coefficients in alkyl ammonium salts [PDF]

Scientific Reports
Quaternary Ammonium Salts (Quats) have diverse applications across various domains. They are extensively used as phase-transfer catalysts (PTCs) in chemical reactions, facilitating the transfer of reactants between aqueous and organic phases.
R. Chawuthai, S. Murathathunyaluk, S. Saengsuradech, A. Nukaew, L. Simasatitkul, S. Amornraksa, S. Assabumrungrat, A. Anantpinijwatna   +7 more
doaj   +2 more sources

Thermodynamic modelling of acid gas removal from natural gas using the Extended UNIQUAC model [PDF]

Fluid Phase Equilibria, 2017
Abstract Thermodynamics of natural gas sweetening process needs to be known for proper design of natural gas treating plants. Absorption with aqueous N-Methyldiethanolamine is currently the most commonly used process for removal of acid gas (CO2 and H2S) impurities from natural gas.
Negar Sadegh, Erling H Stenby, KAJ Thomsen   +2 more
exaly   +2 more sources

Thermodynamic modeling of the solubility of CO2 in aqueous alkanolamine solutions using the extended UNIQUAC model application to monoethanolamine and methyldiethanolamine

Energy Procedia, 2009
AbstractThe extended UNIQUAC model as proposed by Thomsen and Rasmussen [K. Thomsen, P. Rasmussen, Chem. Eng. Sci. 54 (1999) 1787-1802] was applied to the thermodynamic representation of carbon dioxide absorption in aqueous monoethanolamine (MEA) and methyldiethanolamine (MDEA) solutions.
Georgios M Kontogeorgis, KAJ Thomsen, Erling H Stenby   +2 more
exaly   +2 more sources

Aqueous biphasic systems containing sodium L-tartrate dihydrate and PEG, experimental and application of extended thermodynamic models

Chemical Thermodynamics and Thermal Analysis, 2023
In the current study, liquid-liquid equilibrium data of aqueous two-phase systems (ATPS) containing polyethylene glycol at the different molecular weights (1000, 2000, 6000, and 8000) - sodium L-tartrate dihydrate - water at 298.15 K were obtained ...
Hamid Bakhshi, Poorya Mobalegholeslam, Seyed Ali Mosavi   +2 more
doaj   +1 more source

Extended UNIQUAC Thermodynamic Modeling of Aqueous Two-Phase Systems, Water + Salt + Short-Chain Alcohol [PDF]

Industrial & Engineering Chemistry Research, 2022
The extended UNIQUAC activity coefficient model for electrolyte solutions was used for simulating the water + short-chain alcohol (1-propanol, 2-propanol, and tert-butanol) + salt (NaCl, KCl, NH4Cl, Na2SO4, and K2SO4) systems in a wide temperature range (0–100 °C).
Alejandro Gomis, Philip L. Fosbøl, Kaj Thomsen   +2 more
openaire   +2 more sources

Experimental study of CO2 solubility in high concentration MEA solution for intensified solvent-based carbon capture [PDF]

MATEC Web of Conferences, 2019
The solvent-based carbon capture process is the most matured and economical route for decarbonizing the power sector. In this process, aqueous monoethanolamine (MEA) is commonly used as the solvent for CO2 scrubbing from power plant and industrial flue ...
Oko Eni, Akinola Toluleke E., Cheng Chin-Hung, Wang Meihong, Chen Jian, Ramshaw Colin   +5 more
doaj   +1 more source

Correlation and Prediction of Thermodynamic Properties for Quaternary Ammonium Salt Types by Applying the Modified Nonelectrolyte UNIQUAC-NRF Model [PDF]

Iranian Journal of Chemistry & Chemical Engineering
The osmotic and activity coefficients of quaternary ammonium salt types are correlated and predicted by applying a modified nonelectrolyte UNIQUAC-NRF equation.
Ali Hosseini Eghbal, Seyed Hossein Mazloumi   +1 more
doaj   +1 more source