Journal article
Solubility of calcium oxalate monohydrate in concentrated electrolyte solutions
Journal of Chemical & Engineering Data, Vol.66(1), pp.840-847
2021
Abstract
The solubility of solid calcium oxalate monohydrate (CaC2O4·H2O, COM) has been measured in aqueous solutions of four 1:1 electrolytes (NaCl, KCl, CsCl, and Me4NCl) at temperatures T = 298.15, 323.15, and 343.15 K. Solubilities at industrially relevant electrolyte concentrations of up to 5.0 mol·kg–1 were determined by atomic absorption spectrophotometry of the dissolved calcium ions. The solubility of COM in 1.0 mol·kg–1 electrolyte solutions was 2–4 times higher than in pure water but varied little at higher ionic strengths for all of the systems studied. Most of the observed solubilities were well correlated at all temperatures and electrolyte concentrations using a simple Specific Ion-interaction Theory (SIT) model with only one adjustable, temperature-independent, interaction parameter. For Me4NCl solutions, an additional empirical ionic strength dependence of the SIT parameter significantly improved the fit.
Details
- Title
- Solubility of calcium oxalate monohydrate in concentrated electrolyte solutions
- Authors/Creators
- E. Königsberger (Author/Creator)A. Tromans (Author/Creator)P.M. May (Author/Creator)G. Hefter (Author/Creator)
- Publication Details
- Journal of Chemical & Engineering Data, Vol.66(1), pp.840-847
- Publisher
- American Chemical Society
- Identifiers
- 991005541517307891
- Copyright
- © 2020 American Chemical Society
- Murdoch Affiliation
- School of Mathematics, Statistics, Chemistry and Physics
- Language
- English
- Resource Type
- Journal article
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