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Title: ION EXCHANGE SEPARATION OF CESIUM FROM ALKALINE WASTE SUPERNATANT SOLUTIONS

Abstract

Cesium separation from Purex alkaline supernatant waste by ion exchange with inorganic zeolites or phenolic resins was investigated. High cesium loadings were obtained with AW-400, a synthetic zeolite manufactured by the Linde Company. A disadvantage of the AW-400 is the poor quality of the binder; efforts are being made to obtain a more suitable binder. Optimum loading conditions appear to be a flow rate of one to two column volumes of actual waste per hour, with 20-50 mesh exchanger at a temperature of 25 deg C. A scrub or sodium removal step can be accomplished with several solutions; dilute ammonium carbonate solutions are preferred for aged alkaline supernatant wastes. Cesium is eluted with a solution of ammonium carbonate and ammonium hydroxide. Exchangers that are most selective for cesium and have the highest loadings also require the greatest elution volumes. Ammonium carbonate can be volatilized by heating, leaving a cesium solution that is very satisfactory for subsequent packaging operations. Under practical conditions a Cs/Na DF of 10/sup 3/ and cesium recovery of > 99% can be obtained. (auth)

Authors:
;
Publication Date:
Research Org.:
General Electric Co.; Hanford Atomic Products Operation, Richland, Wash.
Sponsoring Org.:
USDOE
OSTI Identifier:
4141618
Report Number(s):
HW-76449
NSA Number:
NSA-18-003387
DOE Contract Number:  
AT(45-1)-1350
Resource Type:
Technical Report
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-64
Country of Publication:
United States
Language:
English
Subject:
WASTE DISPOSAL AND PROCESSING; ALUMINUM SILICATES; AMMONIUM COMPOUNDS; CARBONATES; CESIUM; CESIUM 137; HEATING; HYDROXIDES; ION EXCHANGE; ION EXCHANGE MATERIALS; ISOTOPE SEPARATION; LEACHING; PUREX PROCESS; REPROCESSING; RESINS; SEPARATION PROCESSES; VOLATILITY; WASTE PROCESSING; WASTE SOLUTIONS; ZEOLITES

Citation Formats

Nelson, J L, and Mercer, B W. ION EXCHANGE SEPARATION OF CESIUM FROM ALKALINE WASTE SUPERNATANT SOLUTIONS. United States: N. p., 1963. Web. doi:10.2172/4141618.
Nelson, J L, & Mercer, B W. ION EXCHANGE SEPARATION OF CESIUM FROM ALKALINE WASTE SUPERNATANT SOLUTIONS. United States. doi:10.2172/4141618.
Nelson, J L, and Mercer, B W. Wed . "ION EXCHANGE SEPARATION OF CESIUM FROM ALKALINE WASTE SUPERNATANT SOLUTIONS". United States. doi:10.2172/4141618. https://www.osti.gov/servlets/purl/4141618.
@article{osti_4141618,
title = {ION EXCHANGE SEPARATION OF CESIUM FROM ALKALINE WASTE SUPERNATANT SOLUTIONS},
author = {Nelson, J L and Mercer, B W},
abstractNote = {Cesium separation from Purex alkaline supernatant waste by ion exchange with inorganic zeolites or phenolic resins was investigated. High cesium loadings were obtained with AW-400, a synthetic zeolite manufactured by the Linde Company. A disadvantage of the AW-400 is the poor quality of the binder; efforts are being made to obtain a more suitable binder. Optimum loading conditions appear to be a flow rate of one to two column volumes of actual waste per hour, with 20-50 mesh exchanger at a temperature of 25 deg C. A scrub or sodium removal step can be accomplished with several solutions; dilute ammonium carbonate solutions are preferred for aged alkaline supernatant wastes. Cesium is eluted with a solution of ammonium carbonate and ammonium hydroxide. Exchangers that are most selective for cesium and have the highest loadings also require the greatest elution volumes. Ammonium carbonate can be volatilized by heating, leaving a cesium solution that is very satisfactory for subsequent packaging operations. Under practical conditions a Cs/Na DF of 10/sup 3/ and cesium recovery of > 99% can be obtained. (auth)},
doi = {10.2172/4141618},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1963},
month = {1}
}