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Title: Interim report on a multi-day test of the caustic-side solvent extraction flowsheet for cesium removal from a simulated SRS tank waste.

Abstract

A caustic-side solvent extraction (CSSX) process to remove cesium from Savannah River Site (SRS) high-level waste was tested for 71 hours in a 33-stage minicontactor (2-cm centrifugal contactor). This multi-day demonstration used an average SRS simulant for the waste feed. The two key process goals were achieved: (1) the cesium was removed from the waste with decontamination factors greater than 40,000, and (2) the recovered cesium was concentrated by a factor of 15 in dilute nitric acid. These goals were maintained for 71 h as 1.4 L of solvent was recycled 42 times at 14 mL/min while processing 180 L of SRS simulant at 43 mL/min. The average decontamination factor was 159,000 for cesium and the average concentration factor was 14.9. The process had to be shut down twice for minor problems, which were fixed and testing resumed. The results confirmed that the CSSX process could be used to help decontaminate the millions of gallons of SRS waste now stored in underground tanks.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Argonne National Lab., IL (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
782581
Report Number(s):
ANL-01/10
TRN: US0103414
DOE Contract Number:  
W-31-109-ENG-38
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 4 Jun 2001
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; CESIUM; FLOWSHEETS; NITRIC ACID; SOLVENT EXTRACTION; HIGH-LEVEL RADIOACTIVE WASTES; SAVANNAH RIVER PLANT; EXTRACTION APPARATUSES; MATERIALS RECOVERY; STORAGE FACILITIES; REMEDIAL ACTION; RADIOACTIVE WASTE PROCESSING

Citation Formats

Leonard, R A, Aase, S B, Arafat, H A, Chamberlain, D B, Conner, C, Regalbuto, M C, and Vandegrift, G F. Interim report on a multi-day test of the caustic-side solvent extraction flowsheet for cesium removal from a simulated SRS tank waste.. United States: N. p., 2001. Web. doi:10.2172/782581.
Leonard, R A, Aase, S B, Arafat, H A, Chamberlain, D B, Conner, C, Regalbuto, M C, & Vandegrift, G F. Interim report on a multi-day test of the caustic-side solvent extraction flowsheet for cesium removal from a simulated SRS tank waste.. United States. https://doi.org/10.2172/782581
Leonard, R A, Aase, S B, Arafat, H A, Chamberlain, D B, Conner, C, Regalbuto, M C, and Vandegrift, G F. 2001. "Interim report on a multi-day test of the caustic-side solvent extraction flowsheet for cesium removal from a simulated SRS tank waste.". United States. https://doi.org/10.2172/782581. https://www.osti.gov/servlets/purl/782581.
@article{osti_782581,
title = {Interim report on a multi-day test of the caustic-side solvent extraction flowsheet for cesium removal from a simulated SRS tank waste.},
author = {Leonard, R A and Aase, S B and Arafat, H A and Chamberlain, D B and Conner, C and Regalbuto, M C and Vandegrift, G F},
abstractNote = {A caustic-side solvent extraction (CSSX) process to remove cesium from Savannah River Site (SRS) high-level waste was tested for 71 hours in a 33-stage minicontactor (2-cm centrifugal contactor). This multi-day demonstration used an average SRS simulant for the waste feed. The two key process goals were achieved: (1) the cesium was removed from the waste with decontamination factors greater than 40,000, and (2) the recovered cesium was concentrated by a factor of 15 in dilute nitric acid. These goals were maintained for 71 h as 1.4 L of solvent was recycled 42 times at 14 mL/min while processing 180 L of SRS simulant at 43 mL/min. The average decontamination factor was 159,000 for cesium and the average concentration factor was 14.9. The process had to be shut down twice for minor problems, which were fixed and testing resumed. The results confirmed that the CSSX process could be used to help decontaminate the millions of gallons of SRS waste now stored in underground tanks.},
doi = {10.2172/782581},
url = {https://www.osti.gov/biblio/782581}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jun 04 00:00:00 EDT 2001},
month = {Mon Jun 04 00:00:00 EDT 2001}
}