Article
Biochemistry & Molecular Biology
Carmen M. Romero, Andrea P. Escamilla, Ana C. F. Ribeiro, Miguel A. Esteso
Summary: This study investigates the micellization behavior of decyltrimethylammonium bromide in water and 1,2-propanediol aqueous solutions. The addition of 1,2-propanediol increases the critical micelle concentration of the surfactant and the micellization process is entropy-driven.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Thermodynamics
Anuja Jain, Vandana S. Shende, Dinesh V. Kawadkar, Umesh R. Pratap, Atul V. Wankhade, Sangesh P. Zodape
Summary: The study investigates the stability and behavior of ionic liquids by examining molecular interactions in water and mixed aqueous L-alanine solutions. Parameters such as density and speed of sound are analyzed at different temperatures, along with derived values like apparent molar volume and apparent molar isentropic compressibility for solutes. Transfer parameters for the movement of ionic liquids between aqueous and L-alanine solutions are also explored.
JOURNAL OF CHEMICAL THERMODYNAMICS
(2021)
Article
Physics, Multidisciplinary
Octavio Elizalde-Solis, Abel Zuniga-Moreno, Luis E. Camacho-Camacho, Ricardo Garcia-Morales, Sandro Gonzalez-Arias, Francisco J. Veronico-Sanchez
Summary: This study reports the experimental densities and excess molar volumes of two binary mixtures composed of an ionic liquid and either acetonitrile or tetrahydrofuran. The excess molar volumes were found to be negative and became more negative with increasing temperature. The ERAS model was also applied for the modeling of excess molar volumes.
FRONTIERS IN PHYSICS
(2023)
Article
Thermodynamics
Chennuri Bharath Kumar, Sreenivasulu Karlapudi, Vardhana Syamala, Manukonda Gowri Shankar, Indra Bahadur, Kasibhatta Siva Kumar, Thishana Singh, Faruq Mohammad, Ahmed Abdullah Soleiman
Summary: This paper presents experimental measurements of density, viscosity, and speed of sound for binary mixtures of 2,6-dimethylcyclohexanone with aliphatic primary alcohols. The thermophysical properties were measured over a wide temperature and pressure range, and the excess parameters and deviations in viscosity were calculated. The results indicate the presence of hydrogen bonds, dipole-dipole interactions, and charge-transfer complex formation. Additionally, FT-IR results confirm the hydrogen bonding interactions between 2,6-dimethylcyclohexanone and self-associated primary alcohols.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2023)
Article
Thermodynamics
Tuomas Vielma, Lubomir Hnedkovsky, Petri Uusi-Kyyny, Justin Salminen, Ville Alopaeus, Ulla Lassi, Glenn Hefter
Summary: The study compiled and compared literature data and recent measurements on the volumetric properties of aqueous solutions of zinc sulfate, leading to the development of a semi-empirical Pitzer model that accurately predicts the apparent molar volumes and compressibilities, even under high pressure conditions. By considering the dependency of standard volumes on the compressibility of pure water, the model was able to make accurate predictions up to 100 MPa at 298 K. Additionally, by introducing a specific inequality to the Pitzer model, reasonable extrapolations to temperatures beyond the parameterization range became possible.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2021)
Article
Thermodynamics
Sapna Rana, Ramesh C. Thakur, Harpreet Kaur, Akshay Sharma, Renuka Sharma, Vikas Thakur, Harmanjit Singh, Ishrat Fatma
Summary: Measurements of density and speed of sound were conducted to analyze the solvation behavior of lithium salts in binary aqueous mixtures. Thermo-physical parameters were calculated based on the experimental data, and the presence of solute-solvent synergy and the potential as a structure maker/breaker were examined.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2023)
Article
Thermodynamics
Ishrat Fatma, Humira Assad, Vivek Sharma, Praveen Kumar Sharma, Asha Sharmhal, Ramesh Chand Thakur, Ashish Kumar
Summary: The density and speed of sound values of NLSS and BC in mixed aqueous mixtures of HSA at different temperatures were measured. Various thermodynamic and acoustic parameters were determined based on the data, and the molecular interactions present in the systems were analyzed. The results showed that NLSS and BC acted as structure breakers in the system.
JOURNAL OF CHEMICAL AND ENGINEERING DATA
(2022)
Article
Chemistry, Physical
Diana M. Rodriguez, Luis M. P. Verissimo, Marisa C. F. Barros, Daniela F. S. L. Rodrigues, Maria Melia Rodrigo, Miguel A. Esteso, Carmen M. Romero, Ana C. F. Ribeiro
EUROPEAN PHYSICAL JOURNAL E
(2017)
Article
Thermodynamics
Diana M. Rodriguez, Ana C. F. Ribeiro, Miguel A. Esteso, Carmen M. Romero
JOURNAL OF CHEMICAL THERMODYNAMICS
(2017)
Article
Thermodynamics
Carmen M. Romero, Diana M. Rodriguez, Ana C. F. Ribeiro, Miguel A. Esteso
JOURNAL OF CHEMICAL THERMODYNAMICS
(2017)
Article
Chemistry, Physical
Diana M. Rodriguez, Carmen M. Romero
JOURNAL OF MOLECULAR LIQUIDS
(2017)
Article
Engineering, Environmental
Diana M. Rodriguez, Natalia Mayordomo, Andreas C. Scheinost, Dieter Schild, Vinzenz Brendler, Katharina Mueller, Thorsten Stumpf
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2020)
Article
Engineering, Environmental
Natalia Mayordomo, Diana M. Rodriguez, Dieter Schild, Konrad Molodtsov, Erik Johnstone, Rene Huebner, Salim Shams Aldin Azzam, Vinzenz Brendler, Katharina Mueller
JOURNAL OF HAZARDOUS MATERIALS
(2020)
Article
Engineering, Environmental
Natalia Mayordomo, Diana M. Rodriguez, Andre Rossberg, Harald Foerstendorf, Karsten Heim, Vinzenz Brendler, Katharina Mueller
Summary: This study comprehensively investigates the retention of Fe(II)-Al(III)-Cl LDH towards pertechnetate (TcO4-), showing that Tc retention yield is higher than 80% from pH 3.5 to pH 10.5, especially at low NaCl concentrations. Molecular scale structural information on the retention mechanism is provided through a combination of vibrational and X-ray absorption spectroscopy. XANES confirms Tc(VII) reduction to Tc(IV) and consecutive Tc(IV) interaction with the solid, while EXAFS reveals two different mechanisms of Tc(IV) interaction with hematite.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Diana M. Rodriguez, Natalia Mayordomo, Dieter Schild, Salim Shams Aldin Azzam, Vinzenz Brendler, Katharina Mueller, Thorsten Stumpf
Summary: The study investigated the reductive immobilization of Tc-99 using a synthetic FeS2 mixture, finding complete removal of Tc at certain pH levels and revealing the oxidation of S2- to SO42- by marcasite as a key mechanism for Tc immobilization. The research provides new insights into the redox reactions involved in Tc(VII) mobilization and highlights the potential of marcasite for natural Tc remediation by delaying re-oxidation of Tc(IV).