使用微生物诱导的酸沉的环境友好的沙子固化
Maksym Avramenko1, Kazunori Nakashima2, Chikara Takano2
1Graduate School of Engineering, Hokkaido University, Sapporo, Japan. maksym.avramenko.ua@gmail.com.
Scientific reports
|May 30, 2024
概括
微生物学诱导的酸盐沉 (MICPP) 为土壤稳定提供了一种可持续的方法. 这种环保的方法增强了沙子的性能.
科学领域:
- 地质技术工程 地质技术工程
- 环境科学 环境科学
- 微生物学 微生物学
背景情况:
- 传统的土壤稳定方法往往具有显著的环境缺点.
- 在地球技术工程中,对可持续和环保的替代品的需求日益增长.
研究的目的:
- 引入和评估微生物学诱导的酸盐沉 (MICPP) 作为一种新的土壤稳定技术.
- 评估使用Limosilactobacillus sp.的可行性. 和鱼骨溶液用于酸化合物沉积和沙子稳定.
主要方法:
- 使用过的Limosilactobacillus sp. 在使用中 (NBRC 14511) 和鱼骨溶液 (FBS) 用于MICPP.
- 在降水期间监测pH和离子 (Ca2+) 度变化.
- 使用X射线衍射 (XRD) 和扫描电子显微镜 (SEM) 分析了沉化合物.
- 进行了沙子固化实验,以测量不受限制的压力强度 (UCS).
主要成果:
- 观察到pH和Ca2+度的动态变化,影响二酸二水合物 (DCPD) 转化为酸 (HAp).
- 在UCS中取得了显著的改进,在尿素/Ca2+比率为2.0的情况下,值高达10.35MPa.
- 与传统的土壤稳定方法相比,表现优越.
结论:
- MICPP是一种有前途和环境可持续的土壤稳定方法.
- 该过程通过酸沉有效地提高了沙子的机械性能.
- 这项研究为创新和环保的地质技术实践铺平了道路.
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