Separation of BACL2 from CACL2 brine solution
The present invention relates to a process for separating BaCl 2 from a CaCl 2 brine solution.
1. A method for separating BaCl2 from a CaCl2 brine solution comprising contacting a titanium containing material with a BaCl2 containing CaCl2 brine solution, wherein the titanium containing material comprises TiO2.
2. The method of claim 1 , wherein the titanium containing material is hydrated.
3. The method of claim 1 , wherein the titanium containing material further comprises Ti(OH)4.
4. The method of claim 1 , wherein the titanium containing material comprises granules.
5. The method of claim 1 , wherein the titanium containing material comprises powder.
6. The method of claim 1 , wherein the titanium containing material and the CaCl 2 brine solution are mixed together.
7. The method of claim 1 , wherein the CaCl 2 brine solution is passed through a column packed with the titanium containing material in a granular form.
8. The method of claim 1 , wherein the CaCl 2 brine solution is maintained at a pH from about 3 to about 9.
9. The method of claim 8 , wherein the CaCl 2 brine solution is maintained at a pH from about 5.9 to about 6.9.
10. The method of claim 9 , wherein the CaCl 2 brine solution is maintained at a pH of about 6.5.
11. The method of claim 1 , wherein the CaCl 2 brine solution has a concentration between about 10 wt. % to about 30 wt. % CaCl 2 at ambient temperature, based on the total weight of the brine solution.
12. The method of claim 1 , wherein the CaCl 2 brine solution is contacted with the titanium containing material at a temperature between 10° C. and 75° C.
13. The method of claim 12 , wherein the CaCl 2 brine solution is contacted with the titanium containing material at a temperature between 20° C. and 65° C.
14. The method of claim 1 , wherein the titanium containing material has a surface area above 180 m 2 /g.