Effects of Montmorillonite on the Mineralization and Cementing Properties of Microbiologically Induced Calcium Carbonate
Carbonate mineralization microbe is a microorganism capable of decomposing the substrate in the metabolic process to produce the carbonate, which then forms calcium carbonate with calcium ions. By taking advantage of this process, contaminative uranium tailings can transform to solid cement, where c...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2017/7874251 |
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| author | Tao Chen Jiwei Li Peiheng Shi Yi Li Jia Lei Jian Zhou Zuowen Hu Tao Duan Yongjian Tang Wenkun Zhu |
| author_facet | Tao Chen Jiwei Li Peiheng Shi Yi Li Jia Lei Jian Zhou Zuowen Hu Tao Duan Yongjian Tang Wenkun Zhu |
| author_sort | Tao Chen |
| collection | DOAJ |
| description | Carbonate mineralization microbe is a microorganism capable of decomposing the substrate in the metabolic process to produce the carbonate, which then forms calcium carbonate with calcium ions. By taking advantage of this process, contaminative uranium tailings can transform to solid cement, where calcium carbonate plays the role of a binder. In this paper, we have studied the morphology of mineralized crystals by controlling the mineralization time and adding different concentrations of montmorillonite (MMT). At the same time, we also studied the effect of carbonate mineralized cementation uranium tailings by controlling the amount of MMT. The results showed that MMT can regulate the crystal morphology of calcium carbonate. What is more, MMT can balance the acidity and ions in the uranium tailings; it also can reduce the toxicity of uranium ions on microorganisms. In addition, MMT filling in the gap between the uranium tailings made the cement body more stable. When the amount of MMT is 6%, the maximum strength of the cement body reached 2.18 MPa, which increased by 47.66% compared with that the sample without MMT. Therefore, it is reasonable and feasible to use the MMT to regulate the biocalcium carbonate cemented uranium tailings. |
| format | Article |
| id | doaj-art-5b1fd5bbd3b4446bb7eee512e3efa0eb |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-5b1fd5bbd3b4446bb7eee512e3efa0eb2025-08-20T03:34:43ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422017-01-01201710.1155/2017/78742517874251Effects of Montmorillonite on the Mineralization and Cementing Properties of Microbiologically Induced Calcium CarbonateTao Chen0Jiwei Li1Peiheng Shi2Yi Li3Jia Lei4Jian Zhou5Zuowen Hu6Tao Duan7Yongjian Tang8Wenkun Zhu9Nuclear Waste and Environmental Safety Key Laboratory of Defense, Southwest University of Science and Technology, Mianyang 621010, ChinaNuclear Waste and Environmental Safety Key Laboratory of Defense, Southwest University of Science and Technology, Mianyang 621010, ChinaSichuan Civil-Military Integration Institute, Mianyang, Sichuan 621010, ChinaNuclear Waste and Environmental Safety Key Laboratory of Defense, Southwest University of Science and Technology, Mianyang 621010, ChinaSichuan Civil-Military Integration Institute, Mianyang, Sichuan 621010, ChinaSichuan Civil-Military Integration Institute, Mianyang, Sichuan 621010, ChinaChina Academy of Engineering Physics, Mianyang 621000, ChinaNuclear Waste and Environmental Safety Key Laboratory of Defense, Southwest University of Science and Technology, Mianyang 621010, ChinaSichuan Civil-Military Integration Institute, Mianyang, Sichuan 621010, ChinaNuclear Waste and Environmental Safety Key Laboratory of Defense, Southwest University of Science and Technology, Mianyang 621010, ChinaCarbonate mineralization microbe is a microorganism capable of decomposing the substrate in the metabolic process to produce the carbonate, which then forms calcium carbonate with calcium ions. By taking advantage of this process, contaminative uranium tailings can transform to solid cement, where calcium carbonate plays the role of a binder. In this paper, we have studied the morphology of mineralized crystals by controlling the mineralization time and adding different concentrations of montmorillonite (MMT). At the same time, we also studied the effect of carbonate mineralized cementation uranium tailings by controlling the amount of MMT. The results showed that MMT can regulate the crystal morphology of calcium carbonate. What is more, MMT can balance the acidity and ions in the uranium tailings; it also can reduce the toxicity of uranium ions on microorganisms. In addition, MMT filling in the gap between the uranium tailings made the cement body more stable. When the amount of MMT is 6%, the maximum strength of the cement body reached 2.18 MPa, which increased by 47.66% compared with that the sample without MMT. Therefore, it is reasonable and feasible to use the MMT to regulate the biocalcium carbonate cemented uranium tailings.http://dx.doi.org/10.1155/2017/7874251 |
| spellingShingle | Tao Chen Jiwei Li Peiheng Shi Yi Li Jia Lei Jian Zhou Zuowen Hu Tao Duan Yongjian Tang Wenkun Zhu Effects of Montmorillonite on the Mineralization and Cementing Properties of Microbiologically Induced Calcium Carbonate Advances in Materials Science and Engineering |
| title | Effects of Montmorillonite on the Mineralization and Cementing Properties of Microbiologically Induced Calcium Carbonate |
| title_full | Effects of Montmorillonite on the Mineralization and Cementing Properties of Microbiologically Induced Calcium Carbonate |
| title_fullStr | Effects of Montmorillonite on the Mineralization and Cementing Properties of Microbiologically Induced Calcium Carbonate |
| title_full_unstemmed | Effects of Montmorillonite on the Mineralization and Cementing Properties of Microbiologically Induced Calcium Carbonate |
| title_short | Effects of Montmorillonite on the Mineralization and Cementing Properties of Microbiologically Induced Calcium Carbonate |
| title_sort | effects of montmorillonite on the mineralization and cementing properties of microbiologically induced calcium carbonate |
| url | http://dx.doi.org/10.1155/2017/7874251 |
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