Bioleaching of soluble phosphorus from rock phosphate containing pyrite with DES-induced Acidithiobacillus ferrooxidans

作     者：池汝安 黄晓慧 肖春桥 吴元欣 张文学 

作者机构：Key Laboratory for Green Chemical Process of Ministry of EducationWuhan Institute of Technology Hubei Key Laboratory of Novel Reactor and Green Chemical TechnologyWuhan Institute of Technology Yunnan Phosphate Chemical (Group) Co.Ltd. 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2009年第16卷第5期

页      面：758-762页

核心收录：

学科分类：081902[工学-矿物加工工程] 0819[工学-矿业工程] 08[工学] 

基　　金：Project (Z200515002) supported by the Key Project Foundation of the Education Department of Hubei Province  China 

主　　题：bioleaching rock phosphate (RP) Acidithiobacillusferrooxidans (At. f) diethyl sulfate soluble phosphorus mutation 

摘      要：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.