| Serpentine Dissolution in the Presence of Bacteria Bacillus mucilaginosus | |
| Minjie Yao; Bin Lian; H. H. Teng; Yangchao Ti; Xiuqun Yang | |
| Corresponding Author | Bin Lian |
| 2013 | |
| Source Publication | Geomicrobiology Journal
 |
| Volume | 30Issue:1Pages:72-80 |
| Abstract | Dissolution of serpentine in the presence of soil bacteria Bacillus mucilaginosus is examined through solution chemistry analysis, X-ray diffraction and 3D X-ray microscopy. Microbe-mineral interactions were carried out by incubating serpentine powder and the bacteria for 30 days. Measured Mg concentrations in the culture media were significantly higher than that in any of the control experiments at any time during the experiments. However, the behavior of the Mg/Si ratio was similar to what was known for inorganic dissolution of silicate minerals. XRD analysis revealed increased quantity of amorphous components in the reacted mineral samples, and tomography images showed a very porous and powdered appearance of the dissolved serpentine grains. These data suggest the dissolution probably proceeds through an incongruent route. Further, these observations imply that there is little genetic control by the microbes during the bacteria-mineral interaction; rather, the accelerated dissolution results primarily from a biologically induced process. Finally, the observed pH decrease, the presence of carboxylic acid, ketone, aldehyde, phenol, and alcohol in the metabolites suggests that organic acids and ligands secreted by the bacteria are largely responsible for the accelerated mineral dissolution. |
| Subject Area | 环境地球化学 |
| Indexed By | SCI |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | http://ir.gyig.ac.cn/handle/352002/4922 |
| Collection | 环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文 |
| Corresponding Author | Bin Lian |
| Recommended Citation GB/T 7714 | Minjie Yao,Bin Lian,H. H. Teng,et al. Serpentine Dissolution in the Presence of Bacteria Bacillus mucilaginosus[J]. Geomicrobiology Journal,2013,30(1):72-80. |
| APA | Minjie Yao,Bin Lian,H. H. Teng,Yangchao Ti,&Xiuqun Yang.(2013).Serpentine Dissolution in the Presence of Bacteria Bacillus mucilaginosus.Geomicrobiology Journal,30(1),72-80. |
| MLA | Minjie Yao,et al."Serpentine Dissolution in the Presence of Bacteria Bacillus mucilaginosus".Geomicrobiology Journal 30.1(2013):72-80. |
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