Preparation and Properties of Coal Ash Ceramic Membranes for Water and Heat Recovery from Flue Gas

Figure 2

SEM pictures of the cross section of ceramic membranes: (a) α-Al₂O₃ microceramic membrane (size scale: 100 μm); (b) coal ash ceramic membrane (size scale: 100 μm); (c) α-Al₂O₃ microceramic membrane (size scale: 10 μm); (d) coal ash ceramic membrane (size scale: 10 μm).

(a)

(b)

(c)

(d)