The Equilibrium Time and Salt Expansion Characteristic of Sulfate Saline Soil upon Cooling

Figure 10

The crystallization process of 1.6 mol/L sodium sulfate solution. (a) 0 minutes, 25°C; (b) 12 minutes, 20°C; (c) 50 minutes, 16°C; (d) 120 minutes, 12°C; (e) clear solution after filtration; (f) crystalline after filtration.

(a)

(b)

(c)

(d)

(e)

(f)