3-Formyl-4-hydroxy-N-methyl 2(H) quinoline (FHMQ) was synthesized and characterized. This compound was found not soluble in
water or nitric acid solutions of different concentration. The uptake of Zr and Th from nitric acid by FHMQ has been investigated.
The effect of shaking time on the percent uptake was studied. It was found that the equilibrium uptake of Zr is reached in
one step after 2 hrs while in case of Th 4 hrs was required to reach equilibrium. The effect of nitric acid, metal ion and
FHMQ on Zr uptake was studied. Studies on the retention capacity of 3-formyl-4-hydroxy-N-methyl 2(H) quinoline showed that
its capacity decreases by increasing the nitric acid concentration for both Zr and Th. From the results obtained a selective
method for separation of Zr from Th and U(VI) was developed using a floating bed column.