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Ion exchange resin fouling of molybdenum in recovery uranium processess

Technical Report:

Abstract

The relationship between anion exchange resin fouling and molybdic acid polymerization was studied. By using potentiometer titration and laser-Raman spectroscopy the relationship of molybdic acid polymerization and the pH value of solution or the molybdenum concentration was determined. It was shown that as the concentration of initial molybdenum in solution decreases from 0.2 mol/L to 0.5 mmol/L, the pH value of starting polymerization decreased from 6.5 to 4.5. The experimental results show that the fouling of 201 x 7 resin in the acidic solution is mainly caused by the adsorbing of Mo{sub 3}O{sub 26}{sup 4-} ion and occupying the exchange radical site of the resin. Under the leaching conditions the molybdenum and phosphate existing in the leaching liquor can form 12-molybdo-phosphate ion. It also leads to resin fouling. The molybdenum on the fouled resin can synergically be desorbed by mixed desorbents containing ammonium hydroxide and ammonium sulfate. The desorbed resin can be used for uranium adsorption and the desorbed molybdenum can be recovered by ion exchange method.
Authors:
Guowei, Zhang; Guirong, Zhao [1] 
  1. Beijing Research Inst. of Uranium Ore Processing (China)
Publication Date:
Sep 01, 1990
Product Type:
Technical Report
Report Number:
CNIC-00426; BRIUOP-0011.
Reference Number:
SCA: 050400; PA: AIX-23:010691; SN: 92000637619
Resource Relation:
Other Information: PBD: Sep 1990
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; MOLYBDENUM; HAZARDOUS MATERIALS; MOLYBDENUM COMPOUNDS; ADSORPTION; LEACHATES; MOLYBDOPHOSPHATES; PH VALUE; POLYMERIZATION; RESINS; URANIUM ORES; 050400; FEED PROCESSING
OSTI ID:
10111331
Research Organizations:
China Nuclear Information Centre, Beijing, BJ (China)
Country of Origin:
China
Language:
Chinese
Other Identifying Numbers:
Other: ON: DE92613388; TRN: CN9101691010691
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
13 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Guowei, Zhang, and Guirong, Zhao. Ion exchange resin fouling of molybdenum in recovery uranium processess. China: N. p., 1990. Web.
Guowei, Zhang, & Guirong, Zhao. Ion exchange resin fouling of molybdenum in recovery uranium processess. China.
Guowei, Zhang, and Guirong, Zhao. 1990. "Ion exchange resin fouling of molybdenum in recovery uranium processess." China.
@misc{etde_10111331,
title = {Ion exchange resin fouling of molybdenum in recovery uranium processess}
author = {Guowei, Zhang, and Guirong, Zhao}
abstractNote = {The relationship between anion exchange resin fouling and molybdic acid polymerization was studied. By using potentiometer titration and laser-Raman spectroscopy the relationship of molybdic acid polymerization and the pH value of solution or the molybdenum concentration was determined. It was shown that as the concentration of initial molybdenum in solution decreases from 0.2 mol/L to 0.5 mmol/L, the pH value of starting polymerization decreased from 6.5 to 4.5. The experimental results show that the fouling of 201 x 7 resin in the acidic solution is mainly caused by the adsorbing of Mo{sub 3}O{sub 26}{sup 4-} ion and occupying the exchange radical site of the resin. Under the leaching conditions the molybdenum and phosphate existing in the leaching liquor can form 12-molybdo-phosphate ion. It also leads to resin fouling. The molybdenum on the fouled resin can synergically be desorbed by mixed desorbents containing ammonium hydroxide and ammonium sulfate. The desorbed resin can be used for uranium adsorption and the desorbed molybdenum can be recovered by ion exchange method.}
place = {China}
year = {1990}
month = {Sep}
}