Isolation of alkaliphilic calcifying bacteria and their feasibility for enhanced CaCO₃ precipitation in bio-based cementitious composites.

ABSTRACT: Microbially induced calcite precipitation (MICP), secreted through biological metabolic activity, secured an imperative position in remedial measures within the construction industry subsequent to ecological, environmental and economical returns. However, this contemporary recurrent healing system is susceptible to microbial depletion in the highly alkaline cementitious environment. Therefore, researchers are probing for alkali resistant calcifying microbes. In the present study, alkaliphilic microbes were isolated from different soil sources and screened for probable CaCO₃ precipitation. Non-ureolytic pathway (oxidation of organic carbon) was adopted for calcite precipitation to eliminate the production of toxic ammonia. For this purpose, calcium lactate Ca(C₃ H

SUBMITTER: Shaheen N 

PROVIDER: S-EPMC8085925 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature