利用微生物诱导碳酸钙沉淀技术提高风积沙稳定性

Enhancing aeolian sand stability using microbially induced calcite precipitation technology.

作者信息

Yin Jingyuan, Qu Weiqing, Yibulayimu Zumureti, Qu Jili

机构信息

College of Life and Geographic Sciences, Kashi University, Kashi city, China.

Department of Civil and Urban Engineering, Tandon School of Engineering, New York University, Brooklyn, NY, 11201, USA.

出版信息

Sci Rep. 2024 Oct 12;14(1):23876. doi: 10.1038/s41598-024-74170-5.

DOI:10.1038/s41598-024-74170-5

PMID:39396085

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11470915/

Abstract

This study investigates the effectiveness of Microbially Induced Calcite Precipitation (MICP) technology in enhancing the stability of aeolian sand. Applying MICP to desert sand samples from Kashi, Xinjiang, the results demonstrated significant structural stability and erosion resistance in treated soils during wind erosion tests. Particularly after 14 days of treatment, the soil samples exhibited optimal wind erosion resistance and surface crust strength. Additionally, the formation of calcite significantly improved the soil's penetration strength and wind erosion resistance, with SEM analysis confirming that calcite "bridges" between soil particles enhanced inter-particle bonding. Environmental impact assessments indicated that MICP technology is not only environmentally friendly but also effectively reduces the risk of soil environmental pollution. These findings validate the potential application of MICP technology in enhancing the stability and environmental adaptability of aeolian sand.

摘要

本研究调查了微生物诱导碳酸钙沉淀（MICP）技术在增强风积沙稳定性方面的有效性。将MICP应用于新疆喀什的沙漠沙样，结果表明，在风蚀试验中，处理后的土壤具有显著的结构稳定性和抗侵蚀性。特别是在处理14天后，土壤样品表现出最佳的抗风蚀性和表面结壳强度。此外，方解石的形成显著提高了土壤的渗透强度和抗风蚀性，扫描电子显微镜分析证实，土壤颗粒之间的方解石“桥”增强了颗粒间的粘结。环境影响评估表明，MICP技术不仅环保，而且有效降低了土壤环境污染风险。这些发现验证了MICP技术在增强风积沙稳定性和环境适应性方面的潜在应用。