巨大芽孢杆菌对含钾矿物解钾作用的研究

Study on potassium releasing from potassium- bearing minerals by Bacillus megaterium

针对我国可溶性钾资源严重短缺,但不溶性钾矿资源极为丰富。利用巨大芽孢杆菌(ACCCl0011)作用钾矿,提取矿物中的不溶性钾,并研究了矿物粒径、干湿条件、接菌量、体系pH、培养时间等因素对矿物解钾效果的影响。研究发现:当钾矿过200目,接菌量为6.9×1014-1.74×1015cfu/g,pH为7.5,时间为1天的条件下,矿物中的速效钾含量比原矿增加1.43倍。

In view of the serious shortage of soluble potassium resources and the abundant insoluble potassiumin in China, we use Bacillus megaterium （ACCC10011 ） affect potassium ore to extract insoluble potassiumin from the minerals, and we analyze the factors which influence on potassium releasing from potassium - bearing minerals such as the mineral particle size, dry and wet conditions, the inoculation amount, pH of the system and incubation time. The results indicate that the content of rapidly - available potassium will increase 1.43 times when the potash are 200 mesh, the inoculation quantity is 6.9×10^14-1.74×10^15cfu/g, pH 7.5, and the time provided is one day.