Abstract
The behavior of biomineralization of bacteria A in the presence of Cd2+ and the effect of Cd2+ polluted soil repaired by bacteria A were investigated. The results show that while the bacteria A had a high urease constant Km of 1.231 mol/L and the Cd2+ concentration was 0.595 mg/L, the bacteria grew well. The growth of bacteria changed from accelerated to restrained with the increase of Cd2+ concentration. Bacteria A have high urease activity in Cd2+ polluted solution and soil. Free Cd2+ ions can react with CO32- induced by bacteria urease to form insoluble CdCO3 crystals. By pot experiment, the Cd2+ content in soil and Cd2+ concentration in wheat can be efficiently reduced after the polluted soil was recovered by bacteria A culture medium. The extensive prospect of applying bacteria A to soil and water remediation has been shown.
| Original language | English |
|---|---|
| Pages (from-to) | 215-221 |
| Number of pages | 7 |
| Journal | Kuei Suan Jen Hsueh Pao/ Journal of the Chinese Ceramic Society |
| Volume | 36 |
| Issue number | SUPPL. |
| State | Published - Mar 2008 |
| Externally published | Yes |
Keywords
- Biomineralization
- Bioremediation
- Cadmium carbonate
- Soil