Journal article
Isopiestic measurements on aqueous solutions of heavy metal sulfates: MSO4+ H2O (M = Mn, Co, Ni, Cu, Zn). 1.T= 323.15 K
Journal of Chemical & Engineering Data, Vol.59(1), pp.97-102
2014
Abstract
The water activities of the systems MSO4 + H2O (M = Mn, Co, Ni, Cu, Zn) at higher temperatures are important for heavy metal hydrometallurgy processing of these metals. This paper reports water activity data for these binary systems at 323.15 K from isopiestic measurements. The reliability of the apparatus was verified by determination of the water activities of the test systems at 298.15 K and also two reference systems CaCl2 + H2O and H2SO4 + H 2O at 298.15 K and 323.15 K. The results obtained agree well with literature data, with maximum relative deviations of the water activities for the reference systems of less than 0.032 % at 298.15 K and 0.062 % at 323.15 K respectively. The water activities for the MSO4 + H2O (M = Co, Ni, Cu, Zn) systems at 323.15 K were found to be approximately the same up to high concentrations, but were significantly lower than the MnSO4 + H2O system. The relative deviation of isopiestic molality of parallel samples in each experimental run is better than 0.2 %. The measured water activities reported in this work can be used to parametrize thermodynamic models of heavy-metal hydrometallurgical processes.
Details
- Title
- Isopiestic measurements on aqueous solutions of heavy metal sulfates: MSO4+ H2O (M = Mn, Co, Ni, Cu, Zn). 1.T= 323.15 K
- Authors/Creators
- H. Yang (Author/Creator) - Central South UniversityD. Zeng (Author/Creator) - Central South UniversityW. Voigt (Author/Creator) - TU Bergakademie FreibergG. Hefter (Author/Creator) - Murdoch UniversityS. Liu (Author/Creator) - Central South UniversityQ. Chen (Author/Creator) - Central South University
- Publication Details
- Journal of Chemical & Engineering Data, Vol.59(1), pp.97-102
- Publisher
- American Chemical Society
- Identifiers
- 991005540047507891
- Copyright
- © 2013 American Chemical Society.
- Murdoch Affiliation
- School of Engineering and Information Technology
- Language
- English
- Resource Type
- Journal article
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- Chemistry, Multidisciplinary
- Engineering, Chemical
- Thermodynamics
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- Chemistry