高校地质学报Issue(3)：376-381,6.DOI:10.16108/j.issn1006-7493.2015168
碳酸盐矿化菌的分纯及其对Sr2+的矿化特性研究
Isolation and Sr2+Mineralization Mediated by Carbonate Mineralization Bacteria
摘要
Abstract
Soil pollution has increasingly become a serious problem, especially by radionuclide pollution, and has attracted wide attention. Microbial remediation of radionuclide contaminated soil has been studied and proposed as a potential strategy. Because some microorganisms in soil can consolidate heavy metal to form mineralization, heavy metal inos can be removed from soil. A strain of carbonate mineralization bacterium was isolated from the soil and was used for the mineralization of Sr2+. The final removal rate of 1.0 g/L and 0.5 g/L Sr2 + was as high as 98% and 99%, respectively. Scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR) analyses revealed that the mineralized product was strontium carbonate. It is suggested that indigenous bacteria can survive soil radionuclide toxicity and strontium ions could be mineralized as stable carbonate minerals, which indicates important practicability for radionuclide or heavy metal bioremediation. Also, the finding will provide new insights into carbonate biomineralization.关键词
碳酸盐矿化菌/分离/核素锶/矿化Key words
carbonate mineralization bacteria/isolation/nuclide Sr2+/mineralization分类
生物科学引用本文复制引用
许凤琴,代群威,侯丽华,赵玉连,邬琴琴,秦永莲,蒋沁芮,董发勤..碳酸盐矿化菌的分纯及其对Sr2+的矿化特性研究[J].高校地质学报,2015,(3):376-381,6.基金项目
国家自然科学基金项目（41102212），西南科技大学博士基金（12zx7121）和西南科技大学创新基金项目（15ycx034）资助 （）
