Extraction Kinetics of Yttrium with Sec-octylphenoxy Acetic Acid

摘要

The extraction kinetics of yttrium with sec-octylphenoxy acetic acid had been studied by using a constant interfa-cial area cell with laminar flow at 30°C. The effects of temperature and stirring speed on extraction rate were investigated. The influences of concentration of hydrogen ion, sec-octylphenoxy acetic acid in heptane on extraction rate were also determined. The results showed that mass transfer of yttrium in the system of sec-octylphenoxy acetic acid is limited by chemical reaction and in the system of sec-octylphenoxy acetic acid and HEHEHP by mixture of chemical reaction and diffusion.