(无机) 添加剂对微生物诱导的碳酸沉的影响
Jamie Haystead1, Katie Gilmour1, Angela Sherry1
1Hub for Biotechnology in the Built Environment, Department of Applied Sciences, Northumbria University, Ellison Place, Newcastle upon Tyne NE1 8ST, United Kingdom.
Journal of applied microbiology
|December 19, 2023
概括
这项研究探讨了像BSA和BslA这样的添加剂如何影响微生物诱导的碳酸沉 (MICP). 添加剂通常增加了晶体形成,并影响了晶体大小和结构,为控制降水铺平了道路.
科学领域:
- 生物矿物化 生物矿物化
- 材料科学 材料科学 材料科学
- 微生物学 微生物学
背景情况:
- 微生物诱导的碳酸沉 (MICP) 是一种生物矿物化过程,在建筑和环境修复方面具有应用.
- 控制沉碳酸 (CaCO3) 的形态和晶体结构对于优化MICP应用至关重要.
研究的目的:
- 研究各种有机和无机添加剂对MICP的形态影响.
- 了解添加剂如何影响CaCO3晶体核化,生长和多态选择.
主要方法:
- 使用共聚焦显微镜实时监测MICP.
- 通过扫描电子显微镜 (SEM),能量分散式X射线光谱学 (EDS) 和X射线衍射 (XRD) 进行CaCO3晶体的表征.
- 添加剂的评估包括牛血清白蛋白 (BSA),生物膜表面层蛋白A (BslA),化 (MgCl2) 和聚-l-lysine.
主要成果:
- 与对照组相比,添加剂在100分钟内通常会增加CaCO3晶体产量.
- 比slA促进了比其他添加剂更大的结晶形成,包括MgCl2.
- BSA加速了早期的晶体形成,但对晶体大小的影响很小. 除MgCl2外,所有添加剂都偏爱石而不是石,而MgCl2则产生石.
结论:
- 有机和无机添加剂显著影响MICP的形态结果.
- 了解这些添加效应是实现目标应用控制的CaCO3沉的关键.
- 这项研究为通过添加选择优化MICP的进一步研究提供了基础.
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