Optimization of extraction conditions of gallium from Bayer solution using Taguchi experimental design

Solvent extraction of gallium from Jajarm Bayer process liquor was carried out using Kelex100. Organic phase including Kelex100 as an extractant, isodecanol and kerosene were used. In this research, Kelex100 and isodecanol concentrations in organic phase (%v), aqueous to organic phase ratio, time and temperature were optimized using Taguchi experimental design method (L25(55)).Optimized conditions were determined as: T= 40 oC, Time= 60 min, A/O ratio = 1:1, Kelex100= 12% (%v) and isodecanol = 5%(%v). Under these conditions gallium extraction was 92%.