Patent Number: 
Section: claims

1. A polymer composite for extracting active and non-active Cesium from high level acidic radioactive nuclear waste and/or other inorganic wastes/solutions comprising 10-40% by weight of a polymer and 60-90% by weight of Ammonium molybdophosphate (AMP) based on the weight of the polymer composite,wherein the polymer comprises polysulfone, derivatives of polysulfone, or a combination thereof,wherein the polymer composite comprises an inner porous structure and an outer structured layer having surface pores,wherein the polymer composite has a void volume of 15 to 70% and a skeleton density of 1.1 to 1.6 gm/cc adapted for equilibrium time of 30-100 minutes and a Cesium ion exchange capacity of 0.4-1.0 meq/gm. 2. A polymer composite as claimed in claim 1, wherein the outer structured layer has a thickness ranging from 20 to 25 μm with the surface pores in the range of 100-300 nm,wherein the polymer composite has a void volume of 45 to 50% and a density of 1.2 gm/cc adapted for equilibrium time of 35-40 minutes and a Cesium ion exchange capacity of 0.75-0.8 meq/gm. 3. A polymer composite as claimed in claim 1, wherein the polymer comprises polyether sulfone or its derivatives. 4. A polymer composite as claimed in claim 1, wherein said derivatives of polysulfone comprise derivatives in the form of different substituents attached to the benzene ring of the unit. 5. A polymer composite as claimed in claim 1, comprising a polymer to AMP weight ratio between 1:2 to 1:6, and a void volume of 15 to 60%. 6. A polymer composite as claimed in claim 1, wherein said composite is in the form of a film, a bead or a fiber. 7. A polymer composite as claimed in claim 1, wherein said polymer comprises a molecular weight between 60,000 to 200,000 and a Glass Transition Temperature (Tg) between 170 to 250° C. 8. A polymer composite as claimed in claim 7, wherein the polymer comprises a first polymer and a second polymer wherein the first polymer comprises a molecular weight of 150,000 and a Glass Transition Temperature (Tg) of 210° C. and wherein the second polymer comprises a molecular weight of 60,000 and a Glass Transition Temperature (Tg) of 180° C. 9. A polymer composite as claimed in claim 1, comprising a void volume of 20-22%, a density of 1.6 gm/cc adapted for equilibrium time of 90-100 minutes and a cesium ion exchange capacity of 0.7 meq/gm. 10. A polymer composite as claimed in claim 1, comprising improved granulometric properties which is thermally stable up to 200° C., radiation resistant and stable in acidic and alkaline medium without any significant change in ion exchange capacity of AMP. 11. A process for the preparation of the polymer composite as claimed in claim 1 comprising of the following steps:(a) dissolving the polymer in a solvent to form a solution,(b) dispersing the AMP in the solution at a temperature ranging of from 20 to 50° C., and(c) obtaining therefrom the said polymer composite. 12. A method of using the polymer composite as claimed in claim 1 for the extraction of active and non-active Cesium from high level acidic radioactive nuclear waste and/or other inorganic wastes/solutions by following the steps of:a) providing said polymer compositeb) bringing said polymer composite in contact with high level acidic radioactive nuclear waste and/or other inorganic wastes/solutions for Cs+ ion removal/extraction from said wastes/solutions and obtaining a cesium bound composite therefrom;c) treating the cesium bound composite in alkaline medium to download the Cs-bound AMP for further separation and reuse of Cesium.