Filtration medium comprising a metal-containing particulate
View Patent ↗Described herein is a liquid filtration device is disclosed comprising a fluid conduit fluidly connecting a fluid inlet to a fluid outlet; and a water filtration medium disposed in the fluid conduit; the water filter medium comprising a metal-containing particulate, wherein the metal-containing particulate comprises a thermolysis product of a metal carboxylate; and methods of removing chloramines from aqueous solutions.
1. A method for removing chloramine from aqueous solutions comprising:
providing an aqueous solution comprising chloramine and contacting the aqueous solution with a composition comprising a metal-containing particulate, wherein the metal-containing particulate comprises a thermolysis product of a metal carboxylate.
2. The method for removing chloramine from aqueous solutions of claim 1 , wherein the thermolysis product of a metal carboxylate when washed does not lose more than 40% activity for the removal of chloramines.
3. The method of claim 1 , wherein after contacting the aqueous solution with a composition comprising a metal-containing particulate, the resulting aqueous solution comprises a reduced amount of chloramine.
4. The method of claim 1 , wherein the carboxylate of the metal carboxylate comprises an oxalate, an acetate, a citrate, and combinations thereof.
5. The method of claim 1 , wherein the metal of the metal carboxylate is selected from the group consisting of copper, iron, manganese, and combinations thereof.
6. The method of claim 1 , wherein the metal-containing particulate is substantially free of sulfur atoms.
7. A method for removing chloramine from aqueous solutions comprising:
heating a metal carboxylate to form a thermolysis product;
cooling the thermolysis product; and
contacting the cooled thermolysis product with an aqueous solution comprising chloramine.
8. The method of claim 7 , wherein the heating is conducted at a temperature of 300° C.
9. The method of claim 7 , wherein at least a portion of the metal carboxylate is disposed on a support during the heating step.
10. The method of claim 7 , wherein the heating is conducted in an inert atmosphere.