The Solubility of Gypsum in Magnesium Sulphate Solutions

Solubility of Gypsum in MSO4 Solutions (M = Mg, Mn, Co, Ni, Cu, Zn) at 298.15 K and 313.15 K

“…Also, the calcium wavelength applied for measurements shows no spectral interferences with any of the elements present in the samples, although the wavelength is slightly less sensitive. Cameron et al 5 described the difficulties of Ca analysis in his paper and suggested overcoming this problem by hanging a selenite crystal into magnesium sulfate solutions and weighing the mass loss of the crystal after equilibration. Harkins et al 6 stated some years later that the technique proposed by Cameron et al 5 "leaves much to be desired from the standpoint of accuracy".…”

“…to 473.15) K. The data consists of not more than five different metal sulfate concentrations per temperature.For the system Mg 2+ + Ca 2+ + SO 4 2-+ H 2 O, several authors[4][5][6][7][8][9][10][11][12] published data in the temperature range from T ) (298.15 to 328.15) K, though the majority of the data deal with dilute solutions. Cameron et al5 and Kolosov 9 are the only two that determined the solubility of gypsum in magnesium sulfate solutions until the saturation with MgSO 4 · 7H 2 O at T ) 298.15 K. Data above T ) 298.15 K were provided by Novikova 8 at T ) 308.15 K up to the saturation of MgSO 4 · 7H 2 O and by Bodaleva et al 7 at T ) 328.15 K for gypsum and anhydrite until 2.5 mol MgSO 4 /kg.…”

“…Cameron et al5 and Kolosov 9 are the only two that determined the solubility of gypsum in magnesium sulfate solutions until the saturation with MgSO 4 · 7H 2 O at T ) 298.15 K. Data above T ) 298.15 K were provided by Novikova 8 at T ) 308.15 K up to the saturation of MgSO 4 · 7H 2 O and by Bodaleva et al 7 at T ) 328.15 K for gypsum and anhydrite until 2.5 mol MgSO 4 /kg. Table 1 summarizes the available data sources on the solubility of gypsum in heavy metal sulfate solutions.…”

Temperature dependence of capillary dynamics: A multiphase and multicomponent adiabatic approach

“…Equations (5) and (6) allow therefore to determine ρ l , μ l , γ , n, and K 0 for combinations of multiple liquid substances to be used in Eqs. (1) in adiabatic conditions and particularly suited the set of experiments of water-ethanol mixtures, where ethanol is an organic compound. Note that Eqs.…”

“…The physical description of capillary flows initiated by Bell and Cameron [1] and followed by Lucas [2] and Washburn [3] set the mathematical basis of what is known as the Lucas-Washburn (LW) equation. For single-phase systems (typically liquids), the LW equation has been developed to a remarkably high accuracy after Blake and Haynes [4], Szekely et al [5], Levine et al [6], and Dreyer et al [7] among others.…”