Fig. 6
From: Effect of natural carbonates on microbially induced calcite precipitation process

Aqueous urea concentrations before and after pumping for each treatment for different MICP column experiments: (A) BS_0.02_50_1:1 and BS_0.02_350_1.4:1, (B) BS_0.2_50_1:1 and BS_0.2_350_1.4:1, (C) BS_0.2_50_1:1 and BS_0.2_50_1:1_COM, and (D) CS_0.2_50_1:1 and CS_0.2_50_1:1_COM.