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Title: SEPARATION OF AMERICIUM FROM PROMETHIUM

Abstract

Promethium-147 is separated from americium in acidic aqueous solution by adding fluosilicic acid to the solution, heating the solution to form a promethium precipitate and separating the precipitate from solution. The precipitate is then re-dissolved by ihe addition of boric acid and nitric acid, and re-precipitated by the addition of fluosilicic acid. This procedure is repeated six or more times to obtain a relatively americium-free promeihium precipitate. Americium may be separately recovered from the supernatant liquids. This process is applicable to the recovery of promethium from fission-product solutions which have been allowed to decay for a period of two to four years.

Inventors:
Issue Date:
OSTI Identifier:
4230894
Patent Number(s):
2893827
Assignee:
U.S. Atomic Energy Commission
Patent Classifications (CPCs):
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
C - CHEMISTRY C22 - METALLURGY C22B - PRODUCTION AND REFINING OF METALS
NSA Number:
NSA-14-002483
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-60
Country of Publication:
United States
Language:
English
Subject:
CHEMISTRY; ACIDS; AMERICIUM; BORIC ACID; BORON OXIDES; FISSION PRODUCTS; HEATING; NITRIC ACID; PRECIPITATION; PROMETHIUM 147; RECOVERY; SEPARATION PROCESSES; SILICON FLUORIDES; SOLUTIONS

Citation Formats

Pressly, R E. SEPARATION OF AMERICIUM FROM PROMETHIUM. United States: N. p., 1959. Web.
Pressly, R E. SEPARATION OF AMERICIUM FROM PROMETHIUM. United States.
Pressly, R E. Wed . "SEPARATION OF AMERICIUM FROM PROMETHIUM". United States.
@article{osti_4230894,
title = {SEPARATION OF AMERICIUM FROM PROMETHIUM},
author = {Pressly, R E},
abstractNote = {Promethium-147 is separated from americium in acidic aqueous solution by adding fluosilicic acid to the solution, heating the solution to form a promethium precipitate and separating the precipitate from solution. The precipitate is then re-dissolved by ihe addition of boric acid and nitric acid, and re-precipitated by the addition of fluosilicic acid. This procedure is repeated six or more times to obtain a relatively americium-free promeihium precipitate. Americium may be separately recovered from the supernatant liquids. This process is applicable to the recovery of promethium from fission-product solutions which have been allowed to decay for a period of two to four years.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1959},
month = {7}
}