LIQUID-LIQUID EXTRATION OF ZIRCONIUM (IV) USING HIGH AMINE CTBA/n-HEXAN FROM SUNFURIC ACID MEDIA
Overview
Abstract:
The paper introducted results effect of the conditions
on absorbance of ZrXO, the optimals absorption showed: wavelength was 535 nm, H2SO4
was 0.35 M, the ratio VZr(5.10^-3M)/VXO(5.10^-3M) =
5.0/5.2. Built a calibration curve to determine of Zr(IV) at 535 nm in the
linear concentrations range from 10-4 - 5.10-3 M.
Research results effect on extraction efficiency of Zr(IV), including: with
0.35 M H2SO4 for E = 73.26%; with Vo/Va =
1/1, E = 73.26%; contact time and equilibrium separation time of two phases
were 20 minutes, E = 73.26%; with 0.25 M Na2SO4, that the
best for the extraction efficiency of Zr(IV). Special, we introducted some
characteristics of the extraction system Zr - H2SO4 - CTAB,
that were: built extraction isotherms of Zr(IV) at concentrations of H2SO4
(0.15 - 1.0 M); according the Mc Cable-Thiele plot with Vo/Va =
1/1 the degrees of the theory extraction of Zr(IV) were 4 and Vo/Va
= 2/1 were 2; extracts 96.21% of Zr(IV) from Zr(IV) 5.10-3 M
through 5 times; loading organic of 10-4 M CTAB in carbon
tetrachloride was determined to be LO = 0.4491 g/L through 5 times of phases
contact.
Pages (from-to) | 243-248 |
Journal | TNU Journal of Science and Technology |
Volume | 225 |
Issue number | 6 |
Publication status | Published - 2020 |
ISBN | 1859-2171 |