Method for the recovery of uranium from pregnant liquor solutions
View Patent ↗A method for the recovery of uranium from pregnant liquor solutions that comprise levels of chloride of 5 to 80 g/L by using an amino phosphonic functionalized resin. The method includes providing an amino phosphonic functionalized resin; providing a pregnant liquor solution comprising and uranium; passining the pregnant liquor solution over the amino phosphonic functionalized resin to separate the uranium from the pregnant liquor solution; and eluting the uranium.
1. A method for the recovery of uranium from a pregnant liquor solution comprising:
i) providing an amino phosphonic functionalized resin in acid form;
ii) providing a pregnant liquor solution comprising chloride and uranium;
iii) passing the pregnant liquor solution over the amino phosphonic functionalized resin to separate the uranium from the pregnant liquor solution; and
iv) eluting the uranium
wherein the chloride is present in an amount from 5 to 80 g/L, and
wherine the pregnant liquor solution has a pH of from 0 to 4.
2. The method of claim 1 wherein the pregnant liquor solution comprises from 25 to 2000 mg/L uranium.
3. The method of claim 1 wherein the pregnant liquor solution comprises from 7 to 70 g/L chloride.
4. The method of claim 1 further wherein at least 10% of the amount of uranium from the pregnant liquor solution is recovered.
5. The method of claim 1 further wherein up to 25% of the amount of uranium from the pregnant liquor solution is recovered.