Thermodynamic modelling of aqueous Mn(II) sulfate solutions
Source abstract
Abstract
The H2O–MnSO4 system has been modelled using the Pitzer activity coefficient approach over a temperature interval of −11–175 °C and in concentrations from pure water to the solubility limit of manganese sulfate hydrates, the maximum MnSO4 molality being 4.26 mol/kg at the MnSO4·5H2O(s) to MnSO4·H2O(s) transition temperature of 23.9 °C. The thermodynamic properties of MnSO4 hydrates were refined. The model in this work presents all the experimental data available, including the solubilities, mean activity coefficients, activities of water, enthalpy and heat capacity of solution and hydrate dissociation pressure, with good accuracy and consistently up to 175 °C, but the model has limitations at higher than 100 °C due to lack of experimental data. Highlights ► We modelled H2O–MnSO4 system using the Pitzer activity coefficient approach. ► Lots of experimental data were compiled from the literature. ► Our model presents experimental data available consistently up to 175 °C.
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Research context
OpenAlex topics: Chemical and Physical Properties in Aqueous Solutions · Thermodynamic properties of mixtures · Crystallization and Solubility Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (100+)
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