Modeling the Effect of Microbially Induced Calcium Carbonate Precipitation (MICP) on CO₂ Trapping.

ABSTRACT: Microbially induced calcium carbonate (CaCO₃) precipitation (MICP) is hypothesized to accelerate mineral and solubility trapping of CO₂(g) through bacterial hydrolysis of urea, which increases pH, and hence the solubility of carbonate ions. While previous models of MICP only targeted selected conditions and did not offer modeling of all reaction kinetics, enzyme activities, and buffers in the cultivation media, our model addressed these research gaps and helped to understand the limitations and effectiveness of MICP to enhance CO₂(g) solubility and mineral trapping. Results showed the capability of ureolysis to increase solubility trapping, with buffers in the media having a non-negligible influence on the process. However, ureolysis above pH 8.9 decreases

SUBMITTER: Chen R 

PROVIDER: S-EPMC12529959 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature