Effects of different calcium salts on calcium carbonate crystal formation by Sporosarcina pasteurii KCTC 3558
| Autor: | Joo-Young Park, Choco Michael Gorospe, Sang-Hyun Han, Jae-Seong So, Seong-Geun Kim, Jin-Hoon Jeong, Chang-Ho Kang |
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| Rok vydání: | 2013 |
| Předmět: |
chemistry.chemical_classification
Calcite biology Water flow Inorganic chemistry Biomedical Engineering Salt (chemistry) chemistry.chemical_element Bioengineering Calcium biology.organism_classification Applied Microbiology and Biotechnology Sporosarcina pasteurii chemistry.chemical_compound Calcium carbonate chemistry Vaterite Solubility Biotechnology |
| Zdroj: | Biotechnology and Bioprocess Engineering. 18:903-908 |
| ISSN: | 1976-3816 1226-8372 |
| DOI: | 10.1007/s12257-013-0030-0 |
| Popis: | We examined the effectiveness of using different calcium salts for bioconsolidation. Four calcium salts were chosen based on their applicability and solubility. Initial experiments demonstrated that the addition of any calcium salt had a negative effect on the urease activity of S. pasteurii. Microscopic examinations elucidated the morphological and structural differences of the calcium carbonate (CaCO3) crystals induced. Calcite and vaterite are the prominent forms of CaCO3 detected according to X-ray diffraction (XRD) analysis. Bioconsolidated sand samples were able to significantly resist water flow through a column compared to the non-treated samples. Also, in a tightness test, the differences in the ability to retain water within columns were observed among the samples tested. Moreover, despite the differences, the calcium salts tested still bound the sand together to form blocks. Our results further explain the influence of multiple factors in crystal formation and sand bioconsolidation effectiveness. |
| Databáze: | OpenAIRE |
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