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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.

Inventors:
 [1];  [2]
  1. Joliet, IL
  2. Westmont, IL
Issue Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL
OSTI Identifier:
871035
Patent Number(s):
5645518
Assignee:
University of Chicago (Chicago, IL)
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; stabilizing; low-level; mixed; wastes; temperature; stabilize; solid; liquid; waste; provided; comprising; combining; starter; oxide; obtain; powder; contacting; acid; solution; create; slurry; containing; shaping; now-mixed; predetermined; form; allowing; now-formed; set; provides; encapsulate; cesium; zr; oh; solid-phase; mixture; mixing; phosphoric; subjecting; pressure; pressurized; lastly; supplying; magnesium; sodium; phosphate; proportions; tritium; resulting; comprising supplying; mixed waste; mixed wastes; acid solution; solution containing; provided comprising; phosphoric acid; liquid waste; solid waste; waste containing; predetermined proportion; comprising combining; resulting slurry; phase mixture; containing cesium; containing magnesium; /588/501/

Citation Formats

Wagh, Arun S, and Singh, Dileep. Method for stabilizing low-level mixed wastes at room temperature. United States: N. p., 1997. Web.
Wagh, Arun S, & Singh, Dileep. Method for stabilizing low-level mixed wastes at room temperature. United States.
Wagh, Arun S, and Singh, Dileep. Wed . "Method for stabilizing low-level mixed wastes at room temperature". United States. https://www.osti.gov/servlets/purl/871035.
@article{osti_871035,
title = {Method for stabilizing low-level mixed wastes at room temperature},
author = {Wagh, Arun S and Singh, Dileep},
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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {1}
}

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