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Title: Preliminary laboratory investigation for the removal of radioactive cesium from Purex aqueous waste solutions

Abstract

The laboratory work reported in this paper showed that cesium can be removed from current acid waste (CAW) by first removing strontium and rare earth by solvent extraction then passing the resulting 1AW solution through an ion exchange column containing a zeolite. The method for removing strontium and rare earth by solvent extraction is well documented and is not discussed here. Zeolon-900, a synthetic zeolite made by Norton Company, had the highest affinity for cesium of the ion exchangers tested. Maximum cesium absorption occurred between pH 4.0 and pH 8.5. The absorption of cesium from CAW or 1AF was lower than that observed with 1AW. 1AF is B Plant solvent extraction feed made from CAW. 1AW is waste raffinate from solvent extraction. Laboratory ion exchange column runs showed five percent cesium breakthrough occurred at 92 column volumes. Decontamination factors of 1.17 x 10/sup 4/ and 2.92 x 10/sup 3/ were found for aluminum and iron, respectively, during a laboratory column run. Sodium decontamination factors were not measured for these runs; however, Nelson, Alkaire, and Mercer found the decontamination of sodium from cesium during the processing of acid wastes was 1 x 10/sup 4/.

Authors:
;
Publication Date:
Research Org.:
Northwest Organization for College and University Science; Rockwell International Corp., Richland, WA (USA). Rockwell Hanford Operations
Sponsoring Org.:
USDOE
OSTI Identifier:
5916388
Report Number(s):
RHO-CD-456
TRN: 79-019796
DOE Contract Number:  
EY-77-C-06-1030
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; CESIUM; ION EXCHANGE; PUREX PROCESS; RADIOACTIVE WASTE PROCESSING; RADIOACTIVE WASTES; ZEOLITES; ALKALI METALS; ELEMENTS; INORGANIC ION EXCHANGERS; ION EXCHANGE MATERIALS; MANAGEMENT; METALS; MINERALS; PROCESSING; RADIOACTIVE MATERIALS; REPROCESSING; SEPARATION PROCESSES; WASTE MANAGEMENT; WASTE PROCESSING; WASTES; 052001* - Nuclear Fuels- Waste Processing; 050800 - Nuclear Fuels- Spent Fuels Reprocessing

Citation Formats

Murphy, P. P., and Buckingham, J. S. Preliminary laboratory investigation for the removal of radioactive cesium from Purex aqueous waste solutions. United States: N. p., 1979. Web. doi:10.2172/5916388.
Murphy, P. P., & Buckingham, J. S. Preliminary laboratory investigation for the removal of radioactive cesium from Purex aqueous waste solutions. United States. doi:10.2172/5916388.
Murphy, P. P., and Buckingham, J. S. Mon . "Preliminary laboratory investigation for the removal of radioactive cesium from Purex aqueous waste solutions". United States. doi:10.2172/5916388. https://www.osti.gov/servlets/purl/5916388.
@article{osti_5916388,
title = {Preliminary laboratory investigation for the removal of radioactive cesium from Purex aqueous waste solutions},
author = {Murphy, P. P. and Buckingham, J. S.},
abstractNote = {The laboratory work reported in this paper showed that cesium can be removed from current acid waste (CAW) by first removing strontium and rare earth by solvent extraction then passing the resulting 1AW solution through an ion exchange column containing a zeolite. The method for removing strontium and rare earth by solvent extraction is well documented and is not discussed here. Zeolon-900, a synthetic zeolite made by Norton Company, had the highest affinity for cesium of the ion exchangers tested. Maximum cesium absorption occurred between pH 4.0 and pH 8.5. The absorption of cesium from CAW or 1AF was lower than that observed with 1AW. 1AF is B Plant solvent extraction feed made from CAW. 1AW is waste raffinate from solvent extraction. Laboratory ion exchange column runs showed five percent cesium breakthrough occurred at 92 column volumes. Decontamination factors of 1.17 x 10/sup 4/ and 2.92 x 10/sup 3/ were found for aluminum and iron, respectively, during a laboratory column run. Sodium decontamination factors were not measured for these runs; however, Nelson, Alkaire, and Mercer found the decontamination of sodium from cesium during the processing of acid wastes was 1 x 10/sup 4/.},
doi = {10.2172/5916388},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1979},
month = {1}
}