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Title: Treatment of halogen-containing waste and other waste materials

A process for treating a halogen-containing waste material. The process provides a bath of molten glass containing a sacrificial metal oxide capable of reacting with a halogen in the waste material. The sacrificial metal oxide is present in the molten glass in at least a stoichiometric amount with respect to the halogen in the waste material. The waste material is introduced into the bath of molten glass to cause a reaction between the halogen in the waste material and the sacrificial metal oxide to yield a metal halide. The metal halide is a gas at the temperature of the molten glass. The gaseous metal halide is separated from the molten glass and contacted with an aqueous scrubber solution of an alkali metal hydroxide to yield a metal hydroxide or metal oxide-containing precipitate and a soluble alkali metal halide. The precipitate is then separated from the aqueous scrubber solution. The molten glass containing the treated waste material is removed from the bath as a waste glass. The process of the invention can be used to treat all types of waste material including radioactive wastes. The process is particularly suited for separating halogens from halogen-containing wastes.
 [1];  [1];  [2]
  1. (Oak Ridge, TN)
  2. (Concord, TN)
Issue Date:
OSTI Identifier:
Lockheed Martin Energy Systems, Inc. (Oak Ridge, TN) ORNL
Patent Number(s):
US 5613241
Contract Number:
Research Org:
Country of Publication:
United States
treatment; halogen-containing; waste; materials; process; treating; material; provides; bath; molten; glass; containing; sacrificial; metal; oxide; capable; reacting; halogen; stoichiometric; amount; respect; introduced; reaction; yield; halide; gas; temperature; gaseous; separated; contacted; aqueous; scrubber; solution; alkali; hydroxide; oxide-containing; precipitate; soluble; treated; removed; treat; types; including; radioactive; wastes; particularly; suited; separating; halogens; sacrificial metal; scrubber solution; process provides; particularly suited; waste material; alkali metal; metal oxide; metal halide; waste materials; radioactive waste; molten glass; material including; metal hydroxide; radioactive wastes; stoichiometric amount; waste glass; soluble alkali; containing wastes; including radioactive; glass containing; containing waste; halogen-containing waste; gaseous metal; oxide cap; /588/501/976/