微生物菌粉与菌液矿化固结Zn~(2+)的研究与对比

利用碳酸盐矿化菌在底物诱导下的酶化作用,分解产生碳酸根离子,矿化固结环境(土壤水体)当中的游离重金属离子,减少其危险。文章以Zn2+溶液模拟重金属离子污染体系,研究过程中发现,生产的矿化产物主要是ZnO.5(OH)62(CO)3。分别用菌粉和菌液进行微生物矿化试验,对矿化产物进行底物分解率,SEM,XRD,矿化粒径的对比研究。从对比研究结果看,菌粉复活后,可以达到与菌液基本相同的矿化效果。而菌粉相对于菌液而言,其主要优势在于能长时间储存,产品体积小,运输起来更方便,因此,菌粉具有更广泛的应用性。

Study and Comparison of Mineralized Consolidation Zn2+ Between Bacteria and Powder

The heavy metalions were mineralized as stable carbonate to reduce the risk by the CO32-decompounded by the enzyme effect of carbonate-mineralization microbe induced by the substrate.The biomineralization experiment was carried by simulating heavy-metal contaminated system with Zn2+,the main mineralization products are ZnO5.(OH)6 2(CO)3,use powder and bacteria for microbial mineralization test,The Substrate decomposition rate,XRD,SEM and particle size analysis were conducted for the mineralization,a comparative study of the experimental results between bacteria and freeze-dried powder.From the comparison results,the powder can basically achieve the same mineralization after the resurrection.The powder's main advantages are long time storage,small volume,convenient transport.So,the powder have a wider application compare with bacteria.