skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Method for stabilizing low-level mixed wastes at room temperature

Abstract

A method to stabilize solid and liquid waste at room temperature is provided comprising combining solid waste with a starter oxide to obtain a powder, contacting the powder with an acid solution to create a slurry, said acid solution containing the liquid waste, shaping the now-mixed slurry into a predetermined form, and allowing the now-formed slurry to set. The invention also provides for a method to encapsulate and stabilize waste containing cesium comprising combining the waste with Zr(OH){sub 4} to create a solid-phase mixture, mixing phosphoric acid with the solid-phase mixture to create a slurry, subjecting the slurry to pressure; and allowing the now pressurized slurry to set. Lastly, the invention provides for a method to stabilize liquid waste, comprising supplying a powder containing magnesium, sodium and phosphate in predetermined proportions, mixing said powder with the liquid waste, such as tritium, and allowing the resulting slurry to set. 4 figs.

Inventors:
;
Issue Date:
Research Org.:
Univ. of Chicago, IL (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
512405
Patent Number(s):
5,645,518
Application Number:
PAN: 8-380,922; TRN: 97:013493
Assignee:
Univ. of Chicago, IL (United States) PTO; SCA: 052001; PA: EDB-97:110253; SN: 97001827912
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 8 Jul 1997
Country of Publication:
United States
Language:
English
Subject:
05 NUCLEAR FUELS; SOLID WASTES; LIQUID WASTES; RADIOACTIVE WASTE PROCESSING; LOW-LEVEL RADIOACTIVE WASTES; SLURRIES; SEDIMENTATION; ENCAPSULATION

Citation Formats

Wagh, A.S., and Singh, D. Method for stabilizing low-level mixed wastes at room temperature. United States: N. p., 1997. Web.
Wagh, A.S., & Singh, D. Method for stabilizing low-level mixed wastes at room temperature. United States.
Wagh, A.S., and Singh, D. Tue . "Method for stabilizing low-level mixed wastes at room temperature". United States.
@article{osti_512405,
title = {Method for stabilizing low-level mixed wastes at room temperature},
author = {Wagh, A.S. and Singh, D.},
abstractNote = {A method to stabilize solid and liquid waste at room temperature is provided comprising combining solid waste with a starter oxide to obtain a powder, contacting the powder with an acid solution to create a slurry, said acid solution containing the liquid waste, shaping the now-mixed slurry into a predetermined form, and allowing the now-formed slurry to set. The invention also provides for a method to encapsulate and stabilize waste containing cesium comprising combining the waste with Zr(OH){sub 4} to create a solid-phase mixture, mixing phosphoric acid with the solid-phase mixture to create a slurry, subjecting the slurry to pressure; and allowing the now pressurized slurry to set. Lastly, the invention provides for a method to stabilize liquid waste, comprising supplying a powder containing magnesium, sodium and phosphate in predetermined proportions, mixing said powder with the liquid waste, such as tritium, and allowing the resulting slurry to set. 4 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {7}
}