Influence of Hydrothermal Temperature on Phosphorus Recovery Efficiency of Porous Calcium Silicate Hydrate

Figure 4

FESEM photographs of samples. (a) PCSH: 110°C; (b) PCSH: 140°C; (c) PCSH: 170°C; (d) PCSH: 200°C.

(a)

(b)

(c)

(d)