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Title: Investigation of Varied Strontium-Transuranic Precipitation Chemistries for Crossflow

Abstract

Precipitation chemistries for strontium and transuranic (TRU) removal have been tested for crossflow filterability and lanthanide removal with simulants of Hanford tank 241-AN-107 supernate. This is the initial work indicating the usefulness of a strontium and permanganate precipitation process as applied to the Hanford River Protection Project. Precipitations with both ferric and ferrous iron were shown to be at least two orders of magnitude less filterable than a 0.1 gpm/ft target average flux that was desired at the time. A precipitate from a strontium nitrate strike alone was found to filter easily and to make the desired average flux. Other chemistries tested included precipitant of lanthanum(III), nickel (II), calcium (II), and a redox chemistry using sodium permanganate. Of these chemistries a strontium and permanganate strike including calcium provided the highest filter flux compared to the other chemistries. It showed the most promise in lanthanide removal as well. This work provides a promising direction for further work to achieve both acceptable filterability and decontamination for Envelope C wastes to be treated by the Hanford River Protection Project. The work reported here was originally intended to satisfy needs for crossflow filter testing of a strontium and ferric precipitation method for treating Envelopemore » C using a 241-AN-107 simulant.« less

Authors:
Publication Date:
Research Org.:
Savannah River Site (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
759143
Report Number(s):
BNF-003-98-0171
TRN: US0004492
DOE Contract Number:  
AC09-96SR18500
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 27 Jul 2000
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; ALPHA-BEARING WASTES; CALCIUM; FILTERS; NICKEL; PERMANGANATES; PRECIPITATION; STRONTIUM; STRONTIUM NITRATES; LANTHANUM; RADIOACTIVE WASTE PROCESSING

Citation Formats

Nash, C A. Investigation of Varied Strontium-Transuranic Precipitation Chemistries for Crossflow. United States: N. p., 2000. Web. doi:10.2172/759143.
Nash, C A. Investigation of Varied Strontium-Transuranic Precipitation Chemistries for Crossflow. United States. doi:10.2172/759143.
Nash, C A. Thu . "Investigation of Varied Strontium-Transuranic Precipitation Chemistries for Crossflow". United States. doi:10.2172/759143. https://www.osti.gov/servlets/purl/759143.
@article{osti_759143,
title = {Investigation of Varied Strontium-Transuranic Precipitation Chemistries for Crossflow},
author = {Nash, C A},
abstractNote = {Precipitation chemistries for strontium and transuranic (TRU) removal have been tested for crossflow filterability and lanthanide removal with simulants of Hanford tank 241-AN-107 supernate. This is the initial work indicating the usefulness of a strontium and permanganate precipitation process as applied to the Hanford River Protection Project. Precipitations with both ferric and ferrous iron were shown to be at least two orders of magnitude less filterable than a 0.1 gpm/ft target average flux that was desired at the time. A precipitate from a strontium nitrate strike alone was found to filter easily and to make the desired average flux. Other chemistries tested included precipitant of lanthanum(III), nickel (II), calcium (II), and a redox chemistry using sodium permanganate. Of these chemistries a strontium and permanganate strike including calcium provided the highest filter flux compared to the other chemistries. It showed the most promise in lanthanide removal as well. This work provides a promising direction for further work to achieve both acceptable filterability and decontamination for Envelope C wastes to be treated by the Hanford River Protection Project. The work reported here was originally intended to satisfy needs for crossflow filter testing of a strontium and ferric precipitation method for treating Envelope C using a 241-AN-107 simulant.},
doi = {10.2172/759143},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {7}
}