Thermal Behavior of Water-Electrolyte Mixtures: Structural and Ionic Influences
Kambarova G. Nazarbek U. Raiymbekov Y.
August 2025Dr D. Pylarinos
Engineering, Technology and Applied Science Research
2025#15Issue 425110 - 25117 pp.
This study investigates the thermal properties of water-electrolyte mixtures, specifically focusing on binary and ternary electrolyte solutions over a concentration range of 0.01 mol%–23.5 mol% at two constant temperatures (20°C and 40°C). The results indicate that the specific Heat Capacity (Cp) and Thermal Conductivity (λ) exhibit polynomial dependencies on the ionic radius and charge density. As the ionic radius increases from 0.72 Å (Co²⁺) to 1.65 Å (Cs⁺), Cp decreases by up to 12%. As the charge density increases from 0.0468 C/Ų (Cs⁺) to 0.4921 C/Ų (Co²⁺), Cp increases by up to 15%, while λ decreases by 8%-20% with an increasing charge density, confirming the influence of hydration. These results provide a quantitative framework for electrolyte-based thermal applications in energy storage, water treatment, and thermodynamic modeling.
hydrated ions , ionic radius , specific heat capacity , thermal conductivity , water-electrolyte mixtures
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Research Lab of Water Quality Monitoring and Water Technologies, M. Auezov South Kazakhstan University, Shymkent, 160012, Kazakhstan
Research Lab of Water Quality Monitoring and Water Technologies
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