Stimulation of Indigenous Carbonate Precipitating Bacteria for Ground Improvement
© Published under licence by IOP Publishing Ltd. Calcite minerals are precipitated in soil through biomineralisation which can be either organic or inorganic in nature. Biomineralisation can be employed to improve ground conditions in its natural state. Usually, studies of applied biomineralisation...
| Main Authors: | , , |
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| Format: | Conference Paper |
| Published: |
2017
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| Online Access: | http://hdl.handle.net/20.500.11937/54221 |
| _version_ | 1848759315556466688 |
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| author | Rajasekar, A. Loo Chin Moy, Charles Wilkinson, S. |
| author_facet | Rajasekar, A. Loo Chin Moy, Charles Wilkinson, S. |
| author_sort | Rajasekar, A. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © Published under licence by IOP Publishing Ltd. Calcite minerals are precipitated in soil through biomineralisation which can be either organic or inorganic in nature. Biomineralisation can be employed to improve ground conditions in its natural state. Usually, studies of applied biomineralisation are highly interdisciplinary involving expertise from engineers, chemists and microbiologists. In this paper, we study the potential of biomineralisation from indigenous bacteria present in soil. The soil samples were collected from a high permeable zone and the bacteria that inhabit the soil were stimulated at a temperature of 15°C. A cementation solution consisting of 500mM calcium chloride, urea and nutrient broth at a pH of 7.5 was added to the soil samples. Inorganic precipitation was found to be dominant and was more efficient when compared to organic precipitation. Carbonate precipitation data indicated that inorganic precipitation were 1.37 times better at carbonate formation in comparison to organic precipitation. Scanning Electron Microscopy analysis identified cementation bonds formed between soil particles. It was deducted that organic precipitation is dependent on temperature, and may take an extended time at such low temperature. The preliminary data presented in this paper suggests that the implementation of biomineralisation with in-situ microbes is promising but requires further laboratory and field investigation before being considered for engineering application. |
| first_indexed | 2025-11-14T09:57:56Z |
| format | Conference Paper |
| id | curtin-20.500.11937-54221 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:57:56Z |
| publishDate | 2017 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-542212017-09-13T15:49:26Z Stimulation of Indigenous Carbonate Precipitating Bacteria for Ground Improvement Rajasekar, A. Loo Chin Moy, Charles Wilkinson, S. © Published under licence by IOP Publishing Ltd. Calcite minerals are precipitated in soil through biomineralisation which can be either organic or inorganic in nature. Biomineralisation can be employed to improve ground conditions in its natural state. Usually, studies of applied biomineralisation are highly interdisciplinary involving expertise from engineers, chemists and microbiologists. In this paper, we study the potential of biomineralisation from indigenous bacteria present in soil. The soil samples were collected from a high permeable zone and the bacteria that inhabit the soil were stimulated at a temperature of 15°C. A cementation solution consisting of 500mM calcium chloride, urea and nutrient broth at a pH of 7.5 was added to the soil samples. Inorganic precipitation was found to be dominant and was more efficient when compared to organic precipitation. Carbonate precipitation data indicated that inorganic precipitation were 1.37 times better at carbonate formation in comparison to organic precipitation. Scanning Electron Microscopy analysis identified cementation bonds formed between soil particles. It was deducted that organic precipitation is dependent on temperature, and may take an extended time at such low temperature. The preliminary data presented in this paper suggests that the implementation of biomineralisation with in-situ microbes is promising but requires further laboratory and field investigation before being considered for engineering application. 2017 Conference Paper http://hdl.handle.net/20.500.11937/54221 10.1088/1755-1315/68/1/012010 unknown |
| spellingShingle | Rajasekar, A. Loo Chin Moy, Charles Wilkinson, S. Stimulation of Indigenous Carbonate Precipitating Bacteria for Ground Improvement |
| title | Stimulation of Indigenous Carbonate Precipitating Bacteria for Ground Improvement |
| title_full | Stimulation of Indigenous Carbonate Precipitating Bacteria for Ground Improvement |
| title_fullStr | Stimulation of Indigenous Carbonate Precipitating Bacteria for Ground Improvement |
| title_full_unstemmed | Stimulation of Indigenous Carbonate Precipitating Bacteria for Ground Improvement |
| title_short | Stimulation of Indigenous Carbonate Precipitating Bacteria for Ground Improvement |
| title_sort | stimulation of indigenous carbonate precipitating bacteria for ground improvement |
| url | http://hdl.handle.net/20.500.11937/54221 |