Effects of Montmorillonite on the Mineralization and Cementing Properties of Microbiologically Induced Calcium Carbonate

Figure 6

(a) XPS spectrum of mineralized samples without MMT, (b) XPS spectrum of mineralized samples with MMT, (c) XPS spectrum of O1s without MMT, (d) XPS spectrum of O1s with MMT, (e) XPS spectrum of Ca2p without MMT, and (f) XPS spectrum of Ca2p with MMT.

(a)

(b)

(c)

(d)

(e)

(f)