Microbial Carbonation of Monocalcium Silicate.

ABSTRACT: Biocement formed through microbially induced calcium carbonate precipitation (MICP) is an emerging biotechnology focused on reducing the environmental impact of concrete production. In this system, CO₂ species are provided via ureolysis by Sporosarcina pasteurii (S. pasteurii) to carbonate monocalcium silicate for MICP. This is one of the first studies of its kind that uses a solid-state calcium source, while prior work has used highly soluble forms. Our study focuses on microbial physiological, chemical thermodynamic, and kinetic studies of MICP. Monocalcium silicate incongruently dissolves to form soluble calcium, which must be coupled with CO₂ release to form calcium carbonate. Chemical kinetic modeling shows that calcium solubility is the rate-limiti

SUBMITTER: Guzman MS 

PROVIDER: S-EPMC9025989 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature