System and method for the capture and storage of waste
The present disclosure is directed to systems and methods that absorb waste into a metal-organic framework (MOF), and applying pressure to the MOF material's framework to crystallize or make amorphous the MOF material thereby changing the MOF's pore structure and sorption characteristics without collapsing the MOF framework.
1. A modified metal-organic-framework material, comprising:
a waste material adsorbed in the metal-organic framework material having a crystalline porous structure;
wherein the crystalline porous structure of the metal-organic framework material has been converted to an amorphous structure.
2. The material of claim 1 , wherein the metal-organic framework material is selected from a group consisting of carboxylate-based MOFs, phosphonate-based MOFs, N-based linker MOFs, and N—O-heterofunctional linkers based MOFs.
3. The material of claim 1 , wherein the metal-organic framework material is selected from a group consisting of IRMOFs series, MOF-74 series, Sandia Metal-Organic Frameworks (SMOFs) series, and ZIFs series.
4. The material of claim 1 , wherein the waste material is a gas.
5. The material of claim 1 , further comprising an ionic species adsorbed from solution.
6. The material of claim 4 , wherein the gas is selected from the group consisting of isotope form of I, H, CO, CO 2 , Kr, Xe, Ra, Cs, Ba, Y, Sr, and Rb.
7. The material of claim 5 , wherein the ionic species is selected from the group consisting of cesium and radioactive uranyl-containing ions.
8. The material of claim 1 , wherein the metal-organic framework material is treated with an additive before adsorbing the waste material.
9. The material of claim 8 , wherein the additive is silver or palladium.
10. A method of forming a waste storage material, comprising:
providing a metal-organic framework material having a crystalline structure;
adsorbing a waste material into pores of the metal-organic framework material; and
applying pressure to the metal-organic framework material to convert the crystalline structure of the metal-organic framework to an amorphous structure.
11. The method of claim 10 , wherein the pressure is between 7,350 psi and 18,000 psi.
12. The method of claim 8 , wherein the pressure is applied at ambient temperature.
13. The method of claim 8 , wherein the metal-organic framework material is first treated by impregnating the metal-organic framework material with silver.
14. The method of claim 10 , wherein pressure is applied by hot isostatic pressing at a temperature below the volitization temperature of the waste.