In this work, the removal of chromium (III) from aqueous waste solution by solvent extraction with 2-ethylhexyl phosphonic acid mono-2-ethylhexyl (P507) as extractant is investigated in a novel rotor-stator spinning disc reactor. The effect of rotational speed, volumetric flow rate and rotor-stator distance on extraction efficiency and volumetric mass transfer coefficient are studied. Experimental results indicates that the maximum values of extraction efficiency and volumetric mass transfer coefficient are 97.2 % and 0.40 1/s, respectively. The mass transfer performance inside the rotor-stator spinning disc reactor exceeds that of conventional reactors. Moreover, it is found that the extraction efficiency increases with the increase of rotational speed but with the decrease of volumetric flow rate and rotor-stator distance. The Volumetric mass transfer coefficient increases as both the rotational speed and volumetric flow rate increase, but decreases with the increase of rotor-stator distance. Furthermore, an analysis on the relationships between volumetric mass transfer coefficient and various parameters is launched by the grey correlation method. The calculation result shows good coincidence with the experimental data.

在这项工作中，在新型的转子-定子旋转盘式反应器中，研究了通过以2-乙基己基膦酸单-2-乙基己基（P507）为萃取剂的溶剂萃取从废水中去除铬（III）。研究了转速，体积流量和定子与定子之间的距离对萃取效率和体积传质系数的影响。实验结果表明，提取效率和体积传质系数的最大值分别为97.2％和0.40 1 / s。转子-定子旋转盘式反应器内部的传质性能超过常规反应器。而且，发现提取效率随着转速的增加而增加，但是随着体积流量和转子-定子距离的减小而减小。体积传质系数随着转速和体积流量的增加而增加，但是随着转子-定子距离的增加而减小。此外，利用灰色关联法对体积传质系数与各种参数之间的关系进行了分析。计算结果与实验数据吻合良好。