Article
Chemistry, Physical
Sapna Sharma, Kuldeep Singh, Suvarcha Chauhan, Kuldeep Kumar
Summary: This study measured the density, speed of sound, and viscosity of aqueous solutions of the anti-histaminic drug diphenhydramine hydrochloride with different electrolytes. The effects of drug concentration and temperature on the interactional behavior of the system were analyzed, showing the role of specific and non-specific interactions between the drug and electrolytes in solution stabilization. The results were used to elucidate solute/solvent-solvent/solute interactions in aqueous electrolytic solutions.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Hakim Abbasov
Summary: In this paper, a new model for the relative viscosity of aqueous electrolyte solutions taking into account the hydration of ions is proposed. The model showed good correlation with experimental data and other models, indicating that a decrease in ionic radius, an increase in ion effective hydration number, and electrolyte concentration all lead to an increase in the viscosity of aqueous electrolyte solutions.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Geochemistry & Geophysics
Rui Sun, Zhigang Niu, Shaocong Lai
Summary: Two accurate models have been developed in this study to predict the dynamic viscosities of multi-component aqueous electrolyte solutions. These models perform well in representing the viscosities of various solutions at different temperatures and pressures.
APPLIED GEOCHEMISTRY
(2022)
Article
Biotechnology & Applied Microbiology
Li Sun, Jierong Liang
Summary: This study presents a modeling study on the solubilities of hydrogen sulfide in water and aqueous sodium salt solutions, proving that the electrolyte version of the equation of state model can accurately calculate the solubilities over wide ranges of temperature, pressure, and salt molality, which is crucial for gas exploitation and geological storage.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2023)
Article
Chemistry, Physical
Dominik Schaefer, Maximilian Kohns, Hans Hasse
Summary: A set of molecular models for alkali nitrates in aqueous solutions was developed and used to predict their thermophysical properties through molecular dynamics simulations. The models combined a nitrate anion model from literature with alkali cation models previously developed by the researchers. The SPC/E water model and Lorentz-Berthelot combining rules were applied to describe the interactions. The results showed that the models accurately predicted properties such as density, water activity, mean ionic activity coefficient, self-diffusion coefficients, and radial distribution functions of the studied solutions.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Thermodynamics
Yuan Li, Chau-Chyun Chen
Summary: Thermodynamic modeling of aqueous polyelectrolyte solutions with mixed-valent counterions is performed using the polyelectrolyte Nonrandom Two-liquid activity coefficient model. A modified Delocalized Binding Theory is proposed to determine the polyion condensation fractions of the mixed counterions, taking into account the electrostatic binding, dissociation entropy, and electrostatic interactions. The model successfully correlates experimental data for various aqueous polyelectrolyte systems with mixed-valent counterions.
JOURNAL OF CHEMICAL THERMODYNAMICS
(2022)
Article
Chemistry, Applied
V. J. Huamani-Melendez, M. A. Mauro, R. Darros-Barbosa
Summary: Commercial Tara gum from three sources was purified by precipitation with isopmpanol and evaluated on the structural, physicochemical and rheological properties. The monosaccharide composition of Tara gum galactomannans showed strong influence of their origin, with intrinsic viscosity being influenced by origin and temperature. The rheological behavior at diluted concentrations resulted in shear thickening fluid.
FOOD HYDROCOLLOIDS
(2021)
Article
Chemistry, Physical
Azam Shadloo, Kiana Peyvandi, Abolfazl Shojaeian, Sheida Shariat
Summary: The Cubic Plus Association (CPA) equation of state (EoS) was used to model different types of aqueous non-ionic surfactants, and the parameters were obtained by fitting critical micelle concentration (CMC) data. The effects of temperature on the density and viscosity of the liquid mixture were successfully predicted, and several correlated equations were introduced.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Thermodynamics
Toni E. Kirkes, Sina H. Saravi, Chau-Chyun Chen
Summary: A comprehensive thermodynamic framework based on the Electrolyte Nonrandom Two-Liquid model was developed in this study to calculate phase equilibria behavior and salt solubility of aqueous LiCl, LiBr, LiI, and LiNO3 solutions. Results showed significant improvements when incorporating hydration chemistry, indicating the importance of considering the hydration of lithium ion in electrolyte systems.
FLUID PHASE EQUILIBRIA
(2021)
Article
Engineering, Chemical
P. A. Sosa-Fernandez, T. M. Loc, M. Andres-Torres, M. Tedesco, J. W. Post, H. Bruning, H. H. M. Rijnaarts
Summary: The energy for desalination and pumping both contribute to the total energy consumption of electrodialysis (ED). The contribution varies depending on factors such as salinity, viscosity of the feed, and spacer geometry and thickness. Pumping energy is usually minimal compared to desalination energy, but may account for a larger proportion under specific conditions such as using thin spacers and/or high viscosity feeds.
Article
Chemistry, Physical
Kudakwashe Chayambuka, Ruth Cardinaels, Kevin L. Gering, L. Raijmakers, Grietus Mulder, Dmitri L. Danilov, Peter H. L. Notten
Summary: The study investigated the viscosity and conductivity characteristics of sodium-ion battery electrolyte using experimental and modeling approaches, revealing the optimal binary electrolyte for SIBs. Experimental results showed that the relationship between conductivity and viscosity follows a simple Stokes' law, and the stability of electrolytes on hard carbon was found to be correlated with the preferential ion solvation of EC.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Applied
Emmanuel M. Nsengiyumva, Mark P. Heitz, Paschalis Alexandridis
Summary: This study investigated the physical properties of microbial polysaccharide xanthan gum in aqueous solutions through temperature dependent viscosity measurements. The results showed that temperature and heating cycles have an impact on the viscosity and thermal history of xanthan gum, with concentration being more important than solution temperature.
FOOD HYDROCOLLOIDS
(2023)
Article
Agriculture, Multidisciplinary
Monique Barreto Santos, Ianne Caroline Alves Isabel, Edwin Elard Garcia-Rojas
Summary: This study evaluated the effect of high-intensity ultrasound on depolymerization of aqueous TG solutions. The results showed that ultrasound effectively reduced the molecular weight and viscosity of TG, while increasing its solubility. Moreover, ultrasound did not alter the chemical structure of TG, only breaking down the polymer structure.
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
(2022)
Article
Chemistry, Physical
Viktor N. Makhlaichuk, Nikolay P. Malomuzh
Summary: A new approach to the hydration theory in electrolyte solutions is proposed, introducing the concept of effective polarization complexes and showing their consistency with self-diffusion coefficients.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Engineering, Chemical
Xiaoshuai Yuan, Chin Feng Ng, Heather Nikolic, Kunlei Liu
Summary: A thermodynamically consistent model is crucial for the research and development of CO2 capture process. Linear Gibbs free energy, enthalpy, and heat capacity relationships can be used to estimate parameters when experimental data is lacking, and to correlate properties of ionic and molecular species.