Microbially Induced Calcite Precipitation based Sequestration of Strontium

초록

significant environmental problem. Calcite forming bacteria has also been the basis for a promising in-situ containment method for sequestration of divalent radionuclide and trace metal ions. In this study, ten strains were selected and identified by 16S rDNA sequencing. One of these latter stains, Sporosarcina pasteurii WJ-2 was further selected for subsequent study. Microbially induced calcite precipitation (MICP) by S. pasteurii WJ-2 strain was evaluated for its potential to counteract Sr contamination in column experiments using natural sand. S. pasteurii WJ-2 induced Sr containment by successfully sequestrating approximately 80% of Sr from the soluble fraction of sand.