Health & Environmental Research Online (HERO)


Print Feedback Export to File
2032466 
Journal Article 
Thermodynamic modelling of aqueous Mn(II) sulfate solutions 
Kobylin, PM; Taskinen, PA 
2012 
Yes 
CALPHAD
ISSN: 0364-5916 
38 
146-154 
WOS:000309309800018 
The H2O-MnSO4 system has been modelled using the Pitzer activity coefficient approach over a temperature interval of -11-175 degrees 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 center dot 5H(2)O(s) to MnSO4 center dot H2O(s) transition temperature of 23.9 degrees 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 degrees C, but the model has limitations at higher than 100 degrees C due to lack of experimental data. (C) 2012 Elsevier Ltd. All rights reserved. 
Pitzer model; Manganese sulphate; Manganese sulfate hydrates; Solubility; Activity; CALPHAD method