Solubility of Radium and Strontium Sulfate across the Temperature Range of 0 to 300℃
Paper i proceeding, 2014

Solubility constant data for radium and strontium (celestite) sulfate has been determined across the temperature range of 0 to 300℃ based on the available literature data for these two phases as well as similar data for calcium (anhydrite) and barium (barite) sulfate for which solubility constant data is available across the same temperature range. The thermodynamic data for the phases have been determined by assuming that the solubility constants are a function of the inverse of absolute temperature with a constant, but non-zero, heat capacity change. The solubility for all phases shows a peak with respect to temperature, with the temperature at which the peak occurs increasing as the alkaline earth metals become heavier. The heat capacity change is a function of the ionic radius of the alkaline earth metal ion whereas the enthalpy of reaction at 25℃ is related to the peak at which the maximum solubility occurs. The entropy of reaction at 25℃ is related to the solubility constant and the derived enthalpy of reaction at that temperature.

Författare

Paul Brown

Christian Ekberg

Chalmers, Kemi- och bioteknik, Kärnkemi

Chalmers, Kemi- och bioteknik, Industriell materialåtervinning

Henrik Ramebäck

Chalmers, Kemi- och bioteknik, Kärnkemi

Hanna Hedström

Chalmers, Kemi- och bioteknik, Kärnkemi

Chalmers, Kemi- och bioteknik, Industriell materialåtervinning

Artem Matyskin

Chalmers, Kemi- och bioteknik, Industriell materialåtervinning

Chalmers, Kemi- och bioteknik, Kärnkemi

Uranium Mining and Hydrogeology 2014

553-563

Ämneskategorier

Oorganisk kemi

Fysikalisk kemi

Geologi

Geokemi

Miljövetenskap

Drivkrafter

Hållbar utveckling

Styrkeområden

Energi

ISBN

978-3-319-11059-2