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Title: Ferric ion as a scavenging agent in a solvent extraction process

Abstract

Ferric ions are added into the aqueous feed of a plutonium scrap recovery process that employs a tributyl phosphate extractant. Radiolytic degradation products of tributyl phosphate such as dibutyl phosphate form a solid precipitate with iron and are removed from the extraction stages via the waste stream. Consequently, the solvent extraction characteristics are improved, particularly in respect to minimizing the formation of nonstrippable plutonium complexes in the stripping stages. The method is expected to be also applicable to the partitioning of plutonium and uranium in a scrap recovery process.

Inventors:
 [1];  [2]
  1. Kennewick, WA
  2. Richland, WA
Issue Date:
Research Org.:
Atlantic Richfield Hanford Co., Richland, WA (USA)
OSTI Identifier:
862672
Patent Number(s):
3987145
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
C - CHEMISTRY C22 - METALLURGY C22B - PRODUCTION AND REFINING OF METALS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
DOE Contract Number:  
AT(45-1)-2130
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
ferric; scavenging; agent; solvent; extraction; process; added; aqueous; feed; plutonium; scrap; recovery; employs; tributyl; phosphate; extractant; radiolytic; degradation; products; dibutyl; form; solid; precipitate; iron; removed; stages; via; waste; stream; consequently; characteristics; improved; particularly; respect; minimizing; formation; nonstrippable; complexes; stripping; method; expected; applicable; partitioning; uranium; extraction process; tributyl phosphate; solvent extraction; waste stream; recovery process; degradation products; aqueous feed; dibutyl phosphate; solvent extract; plutonium scrap; phosphate extractant; /423/999/976/

Citation Formats

Bruns, Lester E, and Martin, Earl C. Ferric ion as a scavenging agent in a solvent extraction process. United States: N. p., 1976. Web.
Bruns, Lester E, & Martin, Earl C. Ferric ion as a scavenging agent in a solvent extraction process. United States.
Bruns, Lester E, and Martin, Earl C. Thu . "Ferric ion as a scavenging agent in a solvent extraction process". United States. https://www.osti.gov/servlets/purl/862672.
@article{osti_862672,
title = {Ferric ion as a scavenging agent in a solvent extraction process},
author = {Bruns, Lester E and Martin, Earl C},
abstractNote = {Ferric ions are added into the aqueous feed of a plutonium scrap recovery process that employs a tributyl phosphate extractant. Radiolytic degradation products of tributyl phosphate such as dibutyl phosphate form a solid precipitate with iron and are removed from the extraction stages via the waste stream. Consequently, the solvent extraction characteristics are improved, particularly in respect to minimizing the formation of nonstrippable plutonium complexes in the stripping stages. The method is expected to be also applicable to the partitioning of plutonium and uranium in a scrap recovery process.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {1}
}

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