Optimization of Bioleaching Process of High-Fluoride-Bearing Uranium by Response Surface Methodology

7th Annual International Conference on Materials Science and Engineering

Li, Xiang^1^2 ; Mo, Xiaolan^1 ; Wen, Jiankang^1 ; Yang, Hongying^2

National Engineering Laboratory of Biohydrometallurgy, GRINM Engineering Institute Co. Ltd., Beijing

100088, China^1

School of Metallurgy, Northeastern University, Shenyang

110891, China^2

关键词: Effective parameters;    Optimization studies;    Predicted models;    Process parameters;    Response surface methodology;    Significant variables;    Solid-liquid ratio;    Uranium bioleaching;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/562/1/012100/pdf
DOI  :  10.1088/1757-899X/562/1/012100

来源: IOP

【 摘 要 】

In the bioleaching system of high-fluorine uranium, the dissolution of fluorine must be considered, which is also affected by the parameters of the leaching process. In order to adapt the fluorine-containing system, the strain was domesticated under different fluoride level. In order to match the process parameters in the bioleaching of high-fluoride-bearing uranium ore, response surface methodology was used to predict the effective parameters and their interactions in bioleaching. Four significant variables ([Fe2+]initial, pH, solid-liquid ratio and inoculation percent) were selected for the optimization studies. The optimal values of the variables for the maximum uranium bioleaching recovery (94.230±0.74)% were as in agreement with the predicted models 94.41%.