论文部分内容阅读
The effects of Acidithiobacillus ferrooxidans(At. f) mutated with diethyl sulfate(DES) as a mutagen on the bioleaching of soluble phosphorus(P) from rock phosphate(RP) were investigated. The results show that the oxidative activity of At. f is greatly improved by 1.0%(volume fraction) of DES. Correspondingly,the highest leaching rate of soluble P is also obtained to be 14.9% by the At. f mutated,which is 85.8% higher than that of the adapted At. f without mutation. In addition,the SEM images are significantly performed that the corrosion of RP residue surfaces leached by 1.0% DES-induced At.f is much worse than that of leached by the adapted At. f. All the above indicate that the leaching efficiency of soluble P from RP with pyrite can be greatly improved by using DES-induced At. f to a certain extent.
The effects of Acidithiobacillus ferrooxidans (At. F) mutated with diethyl sulfate (DES) as a mutagen on the bioleaching of soluble phosphorus (P) from rock phosphate (RP) were investigated. The results show that the oxidative activity of At. F is greatly improved by 1.0% (volume fraction) of DES. Correspondingly, the highest leaching rate of soluble P is also obtained to 14.9% by the At. f mutated, which is 85.8% higher than that of the adapted At. f without mutation . In addition, the SEM images were significantly performed that the corrosion of RP residue surfaces leached by 1.0% DES-induced At. F is much worse than that of leached by the adapted At. F. All the above that that lethe leaching efficiency of soluble P from RP with pyrite can be greatly improved by using DES-induced At. f to a certain extent.