Patent Number: 
Section: claims

1. A method for immobilization of a radioactive waste stream containing tetraphenyl borate compounds comprising the steps of:maintaining the pH of said waste stream in excess of pH 10;adding sodium hydroxide and/or potassium hydroxide to said waste stream;adding dissolving silica to said waste stream;adding a binder to said waste stream;adding an enhancer to said waste stream; andimmobilizing said waste stream without the process temperature exceeding 40° C. 2. The method of claim 1 including the step of maintaining the pH of said waste stream in excess of pH 10 by acid hydrolysis. 3. The method of claim 1 including the step of maintaining the pH of said waste stream between pH 12 and pH 14. 4. The method of claim 3 including the step of maintaining the pH of said waste stream between pH 12 and pH 14 by acid hydrolysis. 5. The method of claim 1 including the step of cooling said sodium hydroxide and/or potassium hydroxide to a temperature lower than said waste stream prior to adding said sodium hydroxide and/or potassium hydroxide to said waste stream. 6. The method of claim 1 including the step of cooling said sodium hydroxide and/or potassium hydroxide to a temperature lower than 40° C. prior to adding said sodium hydroxide and/or potassium hydroxide to said waste stream. 7. The method of claim 1 including the step of providing a radioactive waste stream containing a tetraphenyl borate compound. 8. The method of claim 1 wherein said dissolving silica is selected from the group consisting of fumed silica or fly ash. 9. The method of claim 1 including the step of adding fumed silica to said sodium hydroxide and/or potassium hydroxide prior to adding said sodium hydroxide and/or potassium hydroxide to said waste stream. 10. The method of claim 1 wherein said binder is selected from the group consisting of metakaolin, ground blast furnace slag, fly ash, and copper smelter slag. 11. The method of claim 10 wherein said ground blast furnace slag contains between 0.1 and 9 percent sulfides. 12. The method of claim 10 wherein said ground blast furnace slag is alkali-activated. 13. The method of claim 1 including the step of mixing said binder with said sodium hydroxide and/or potassium hydroxide and said enhancer prior to adding said sodium hydroxide and/or potassium hydroxide, binder, and enhancer to said radioactive waste stream. 14. The method of claim 1 wherein said enhancer is selected from the group consisting of soluble salt of metal, green rust, layered double hydroxide, layered bismuth hydroxide, mesoporous MPOx where M is selected from the group consisting of Ti, Al and Zr, mesoporous silica, ziolitic material, porous glass ion. 15. The method of claim 14 where said soluble salt of metal is selected from the group consisting of Ag, Cv, Ag2S, Cu2S and FeS. 16. The method of claim 14 where said green rust is selected from the group consisting of Fe2+ and —Fe3+. 17. The method of claim 14 where said layered double hydroxide is activated by calcination. 18. The method of claim 14 where said layered bismuth hydroxide is BiPbO2NO3. 19. The method of claim 14 where said mesoporous silica is doped from the group consisting of P, Zr and Al. 20. The method of claim 14 where said zeolitic material is impregnated with silver. 21. The method of claim 1 wherein said enhancer is added to said waste stream prior to adding said sodium hydroxide and/or potassium hydroxide and said binder. 22. The method of claim 1 including the step of performing microbial mediation on said waste stream to reduce nitrate to nitrogen prior to adding said sodium hydroxide and/or potassium hydroxide, said binder and said enhancer. 23. The method of claim 22 including the step of diluting said waste stream prior to performing microbial mediation. 24. The method of claim 23 including the step of evaporating said waste stream to reconcentrate said waste stream. 25. The method of claim 22 including the step of adjusting the pH of the waste stream to allow for microbial mediation. 26. The method of claim 22 wherein said microbial mediation occurs using halophylic bacteria. 27. A method for immobilization of a radioactive waste stream containing tetraphenyl borate compounds comprising the steps of:maintaining the pH of said waste stream in excess of pH 10;adding sodium hydroxide and/or potassium hydroxide to said waste stream;adding dissolving silica to said waste stream;adding a binder to said waste stream;adding an enhancer to said waste stream that immobilizes one or more heavy metals and/or radionuclides in the waste stream by precipitation, absorption, and/or ion exchange mechanisms; andimmobilizing said waste stream without the process temperature exceeding 40° C. 28. The method of claim 27 including the step of maintaining the pH of said waste stream in excess of pH 10 by acid hydrolysis. 29. The method of claim 27 including the step of maintaining the pH of said waste stream between pH 12 and pH 14. 30. The method of claim 27 including the step of maintaining the pH of said waste stream between pH 12 and pH 14 by acid hydrolysis. 31. The method of claim 27 including the step of cooling said sodium hydroxide and/or potassium hydroxide to a temperature lower than said waste stream prior to adding said sodium hydroxide and/or potassium hydroxide to said waste stream. 32. The method of claim 27 including the step of cooling said sodium hydroxide and/or potassium hydroxide to a temperature lower than 40° C. prior to adding said sodium hydroxide and/or potassium hydroxide to said waste stream. 33. The method of claim 27 including the step of providing a radioactive waste stream having a tetraphenyl borate compound. 34. The method of claim 27 wherein said dissolving silica is selected from the group consisting of fumed silica and fly ash. 35. The method of claim 27 including the step of adding fumed silica to said sodium hydroxide and/or potassium hydroxide prior to adding said sodium hydroxide and/or potassium hydroxide to said waste stream. 36. The method of claim 27 wherein said binder is selected from the group consisting of metakaolin, ground blast furnace slag, fly ash, and copper smelter slag. 37. The method of claim 27 wherein said ground blast furnace slag contains between 0.1 and 9 percent sulfides. 38. The method of claim 27 wherein said ground blast furnace slag is alkali-activated. 39. The method of claim 27 including the step of mixing said binder with said sodium hydroxide and/or potassium hydroxide and said enhancer prior to adding said sodium hydroxide and/or potassium hydroxide, binder, and enhancer to said radioactive waste stream. 40. The method of claim 27 wherein said enhancer is selected from the group consisting of soluble salt of metal, green rust, layered double hydroxide, layered bismuth hydroxide, mesoporous MPOx, where M is from the group Ti, Al and Zr, mesoporous silica, zeolitic material, porous glass ion. 41. The method of claim 40 where said soluble salt of metal is selected from the group consisting of Ag, Cv, Ag2S, Cu2S and FeS. 42. The method of claim 40 where said green rust is selected from the group consisting of Fe2+ and —Fe3+. 43. The method of claim 40 where said layered double hydroxide is activated by calcinations. 44. The method of claim 40 where said layered bismuth hydroxide is BiPbO2NO3. 45. The method of claim 40 where said mesoporous silica is doped from the group consisting of P, Zr and Al. 46. The method of claim 40 where said zeolitic material is impregnated with silver. 47. The method of claim 27 wherein said enhancer is added to said waste stream prior to adding said sodium hydroxide and said binder. 48. The method of claim 27 including the step of performing microbial mediation on said waste stream to reduce nitrate to nitrogen prior to adding said sodium hydroxide, said binder and said enhancer. 49. The method of claim 48 including the step of diluting said waste stream prior to performing microbial mediation. 50. The method of claim 48 including the step of evaporating said waste stream to reconcentrate said waste stream. 51. The method of claim 48 including the step of adjusting the pH of the waste stream to allow for microbial mediation. 52. The method of claim 48 wherein said microbial mediation occurs using halophylic bacteria.