硅酸盐学报2017，Vol.45Issue(11)：1642-1648,7.DOI:10.14062/j.issn.0454-5648.2017.11.12
微生物水泥矿化过程受环境中生物的影响
Effect of Indigenous Microorganisms on Microbe Cement
摘要
Abstract
The effect of indigenous microorganisms on the biomineralization of Microbe Cement was investigatedvia the measurements of optical density and pH value as well as the evolution of dissolved calcium and dissolved inorganic carbon, respectively. The results show that the dissolved calcium is precipitated as CaCO3 reacts quickly in the bacteria-free culture rather than in the nature, despite the presence of the indigenous microorganisms can serve as the nucleation sites in the form of bacterial cells. The indigenous microorganisms exhibit a considerably high growth rate, resulting in less favorable chemical conditions in the nature culture,i.e., lower pH value and lower CO32- concentration. It is suggested that the presence of the indigenous microorganisms could decelerate the biomineralization of Microbe Cement and their effect should be taken into consideration. Furthermore, the injection of S. pasteurii does not require the addition of any nutrients for ureolysis to proceed over several days. The absence of nutrient addition reduces the risk of stimulating metabolic process other than ureolysis.关键词
微生物水泥/方解石/微生物/矿化Key words
microbe cement/calcite/microorganism/mineralization分类
建筑与水利引用本文复制引用
刘鹏,邵光辉,赵志峰,黄容聘..微生物水泥矿化过程受环境中生物的影响[J].硅酸盐学报,2017,45(11):1642-1648,7.基金项目
国家自然科学基金(51578293) （51578293）
江苏省高校自然科学研究面上项目(15KJB580008). （15KJB580008）
