摘要
选育碳酸盐矿化菌,利用其诱导CaCO3沉积,采用涂覆法和浸泡法进行细菌矿化试验,最终在大理石样品表面形成一层致密的矿化膜。采用扫描电镜(SEM)和X射线衍射(XRD)对大理石空白试样和处理后试样进行分析,并对矿化膜进行抗酸性测试。结果表明,涂覆法和浸泡法均能在大理石表面粘结一层细小颗粒,形成一层致密、厚度为50-100μm的CaCO3矿化膜。经过覆膜处理的大理石耐酸性能得到了明显提升。
CaCO3 precipitation was induced by carbonate-mineralization microbe using the immersion method and the coating method, and finally formed a dense mineralization membrane layer on marble sample Surface. The immersed and smeared samples were characterized by scanning electron microscopic (SEM) and X-ray diffraction (XRD), as well as tested the acid-resistance of the calcium carbonate layer. Experimental results showed that both immersion method and coating method can produce calcium carbonate particle forming a layer of dense mineralization membrane of 50--100 tun, acid-resistance of the coated marble samples was improved significantly.
出处
《非金属矿》
CAS
CSCD
北大核心
2014年第1期11-13,共3页
Non-Metallic Mines
基金
国家自然科学基金(11075134)
核废物与环境安全国防重点学科实验室开放基金(12zxnp08)
极端条件物质特性联合实验室基金(12zxjk09)
关键词
大理石
微生物矿化
碳酸钙
覆膜
marble biomineralization calcium carbonate deposited-layer