Study on Selective Adsorption of Bacteria on Pyrite and Galena
Adsorption of Thiooxidans ferrooxidans and Mycobacterium Phlei on the surface of pyrite and galena was studied.From the experimental results, it was observed that Mycobacterium Phlei adsorbed preferentially on pyrite than on galena at neutral and alkaline pH values, while Thiooxidans ferrooxidans is not at all pH range, and the scanning electron microscopy photograph also indicated that.FTIR and XPS of two strains of bacteria indicated that there are much functional groups on surface of them, such as O-H, N-H, C-O, C-N, C-O etc, but S-O group occurred on Thiooxidarts ferrooxidans cell surface and the P-O group appeared on Mycobacterium Phlei cell surface,and the content of C-O-H and C-O-C groups on Mycobacterium Phlei cell surface is higher than that on Thiooxidans ferrooxidans cell surface, this also been known from UVS investigation.The affinity of these groups to metal ions on sulfide minerals is able to explain the selective adsorption.
Selective adsorption Bacteria Pyrite Galena
C.Y. Jia D.Z. Wei C. Han S.J. Dai S.L. Gao W.G. Liu
School of Resources and Civil Engineering Minerals Processing, Northeastern University, China
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
1093-1100
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）