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Title: Oxidative-Alkaline Leaching of Washed 241-SY-102 and 241-SX-101 Tank Sludges and Its Impact on Immobilized High-Level Waste

Abstract

This report describes work designed to evaluate the effectiveness of alkaline permanganate contacts at selectively removing chromium from the Hanford tank sludges 241-SY-102 and 241-SX-101. The key variables examined in this study, as compared to contact with the standard conditions of stoichiometric permanganate in 3 M hydroxide at elevated temperature, were: a) excess permanganate and hydroxide at elevated temperature, b) the separation of an elevated temperature 3 M hydroxide leach with either a room temperature permanganate contact or an elevated temperature permanganate contact at 0.25 M hydroxide. It was determined that sequential permanganate and caustic leaching can provide as effective removal of Cr as the combined high hydroxide permanganate contact at elevated temperature while minimizing concomitant Pu dissolution.

Authors:
 [1];  [1];  [1];  [1]
  1. Battelle, Richland, WA (United States). Pacific Northwest Division
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
889529
Report Number(s):
PNWD-SA-7160
Journal ID: ISSN 0149-6395; SSTEDS; TRN: US0604408
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Separation Science and Technology; Journal Volume: 41; Journal Issue: 10
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; CHROMIUM; REMOVAL; DISSOLUTION; LEACHING; PERMANGANATES; SLUDGES; STORAGE FACILITIES; HANFORD RESERVATION; HIGH-LEVEL RADIOACTIVE WASTES; Oxidative Leaching; chromium; Hanford Tank Sludge

Citation Formats

Rapko, Brian M., Geeting, John G.H., Sinkov, Sergei I., and Vienna, John D.. Oxidative-Alkaline Leaching of Washed 241-SY-102 and 241-SX-101 Tank Sludges and Its Impact on Immobilized High-Level Waste. United States: N. p., 2007. Web. doi:10.1080/01496390600750917.
Rapko, Brian M., Geeting, John G.H., Sinkov, Sergei I., & Vienna, John D.. Oxidative-Alkaline Leaching of Washed 241-SY-102 and 241-SX-101 Tank Sludges and Its Impact on Immobilized High-Level Waste. United States. doi:10.1080/01496390600750917.
Rapko, Brian M., Geeting, John G.H., Sinkov, Sergei I., and Vienna, John D.. Thu . "Oxidative-Alkaline Leaching of Washed 241-SY-102 and 241-SX-101 Tank Sludges and Its Impact on Immobilized High-Level Waste". United States. doi:10.1080/01496390600750917.
@article{osti_889529,
title = {Oxidative-Alkaline Leaching of Washed 241-SY-102 and 241-SX-101 Tank Sludges and Its Impact on Immobilized High-Level Waste},
author = {Rapko, Brian M. and Geeting, John G.H. and Sinkov, Sergei I. and Vienna, John D.},
abstractNote = {This report describes work designed to evaluate the effectiveness of alkaline permanganate contacts at selectively removing chromium from the Hanford tank sludges 241-SY-102 and 241-SX-101. The key variables examined in this study, as compared to contact with the standard conditions of stoichiometric permanganate in 3 M hydroxide at elevated temperature, were: a) excess permanganate and hydroxide at elevated temperature, b) the separation of an elevated temperature 3 M hydroxide leach with either a room temperature permanganate contact or an elevated temperature permanganate contact at 0.25 M hydroxide. It was determined that sequential permanganate and caustic leaching can provide as effective removal of Cr as the combined high hydroxide permanganate contact at elevated temperature while minimizing concomitant Pu dissolution.},
doi = {10.1080/01496390600750917},
journal = {Separation Science and Technology},
number = 10,
volume = 41,
place = {United States},
year = {Thu Feb 15 00:00:00 EST 2007},
month = {Thu Feb 15 00:00:00 EST 2007}
}