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Title: Separation of sulfur isotopes

Abstract

Sulfur isotopes are continuously separated and enriched using a closed loop reflux system wherein sulfur dioxide (SO.sub.2) is reacted with sodium hydroxide (NaOH) or the like to form sodium hydrogen sulfite (NaHSO.sub.3). Heavier sulfur isotopes are preferentially attracted to the NaHSO.sub.3, and subsequently reacted with sulfuric acid (H.sub.2 SO.sub.4) forming sodium hydrogen sulfate (NaHSO.sub.4) and SO.sub.2 gas which contains increased concentrations of the heavier sulfur isotopes. This heavy isotope enriched SO.sub.2 gas is subsequently separated and the NaHSO.sub.4 is reacted with NaOH to form sodium sulfate (Na.sub.2 SO.sub.4) which is subsequently decomposed in an electrodialysis unit to form the NaOH and H.sub.2 SO.sub.4 components which are used in the aforesaid reactions thereby effecting sulfur isotope separation and enrichment without objectionable loss of feed materials.

Inventors:
 [1];  [2];  [1]
  1. Centerville, OH
  2. Dayton, OH
Issue Date:
Research Org.:
Mound Plant (MOUND), Miamisburg, OH (United States)
OSTI Identifier:
862583
Patent Number(s):
3965250
Assignee:
United States of America as represented by United States Energy (Washington, DC)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
DOE Contract Number:  
AT(33-1)-GEN-53
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
separation; sulfur; isotopes; continuously; separated; enriched; closed; loop; reflux; dioxide; reacted; sodium; hydroxide; naoh; form; hydrogen; sulfite; nahso; heavier; preferentially; attracted; subsequently; sulfuric; acid; forming; sulfate; gas; contains; increased; concentrations; heavy; isotope; na; decomposed; electrodialysis; unit; components; aforesaid; reactions; effecting; enrichment; objectionable; loss; feed; materials; sodium hydroxide; closed loop; feed material; sulfuric acid; sulfur dioxide; isotope separation; feed materials; form sodium; subsequently reacted; sulfur isotopes; continuously separated; increased concentration; increased concentrations; sulfur isotope; /423/203/

Citation Formats

DeWitt, Robert, Jepson, Bernhart E, and Schwind, Roger A. Separation of sulfur isotopes. United States: N. p., 1976. Web.
DeWitt, Robert, Jepson, Bernhart E, & Schwind, Roger A. Separation of sulfur isotopes. United States.
DeWitt, Robert, Jepson, Bernhart E, and Schwind, Roger A. Tue . "Separation of sulfur isotopes". United States. https://www.osti.gov/servlets/purl/862583.
@article{osti_862583,
title = {Separation of sulfur isotopes},
author = {DeWitt, Robert and Jepson, Bernhart E and Schwind, Roger A},
abstractNote = {Sulfur isotopes are continuously separated and enriched using a closed loop reflux system wherein sulfur dioxide (SO.sub.2) is reacted with sodium hydroxide (NaOH) or the like to form sodium hydrogen sulfite (NaHSO.sub.3). Heavier sulfur isotopes are preferentially attracted to the NaHSO.sub.3, and subsequently reacted with sulfuric acid (H.sub.2 SO.sub.4) forming sodium hydrogen sulfate (NaHSO.sub.4) and SO.sub.2 gas which contains increased concentrations of the heavier sulfur isotopes. This heavy isotope enriched SO.sub.2 gas is subsequently separated and the NaHSO.sub.4 is reacted with NaOH to form sodium sulfate (Na.sub.2 SO.sub.4) which is subsequently decomposed in an electrodialysis unit to form the NaOH and H.sub.2 SO.sub.4 components which are used in the aforesaid reactions thereby effecting sulfur isotope separation and enrichment without objectionable loss of feed materials.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {6}
}

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