Answers are grounded in this paper and cite their sources.
A theoretical and experimental investigation of solubility of gypsum and anhydrite II in the complex system CaSO 4 + MgSO 4 + H 2 SO 4 + H 2 O was conducted from 298.1 to 363.1 K. The solubility of anhydrite II in (MgSO 4 + H 2 SO 4 ) aqueous solutions was determined at 348.1 and 363.1 K by an isothermal method. A Pitzer thermodynamic model was selected to predict the solubility of gypsum and anhydrite II in the titled quaternary system. Good agreement between the experimental and the model values was observed, which supports the reliability of the model prediction. As predicted by the model, the transfer temperature from gypsum to anhydrite II decreases with increasing H 2 SO 4 and MgSO 4 concentrations, and the solubilities of gypsum and anhydrite II decrease monotonically with increasing MgSO 4 concentration if H 2 SO 4 concentration is higher than 0.5 mol·kg –1 . On the basis of the results obtained, several suggestions for avoiding calcium sulfate scaling in the industrial process were proposed.
No takes yet. Share an insight, caveat, or question.
Wang et al. (2014) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: