Optimization of Some Parameters on the Low Efficiency of Solvent Extraction of Uranium with Alamine 336-Reference-Cited by-同舟云学术

Optimization of Some Parameters on the Low Efficiency of Solvent Extraction of Uranium with Alamine 336

Published:2021-02-28 Issue:1 Volume:37 Page:213-220
ISSN:2231-5039
Container-title:Oriental Journal Of Chemistry
language:en
Short-container-title:Orient. J. Chem

Author:

Yacouba Abdoul-Rachid Chaïbou¹^ORCID,Ibrahim Salmana Laouali²^ORCID,Wage Abdoul Razak Moumouni²^ORCID,Natatou Ibrahim³^ORCID

Affiliation:

1. Department of Chemistry, Faculty of Sciences and Techniques, Agadez University, P.O.B. 199, Agadez, Niger.

2. Department of Materials, Water, and Environment Laboratory, Faculty of Sciences and Techniques, Abdou Moumouni University, P.O.B. 10662, Niamey, Niger.

3. Department of Chemistry, Faculty of Sciences and Techniques, Agadez University, P.O.B. 199, Agadez, Niger, Department of Materials, Water, and Environment Laboratory, Faculty of Sciences and Techniques, Abdou Moumouni University, P.O.B. 10662, Niamey, Niger.

Abstract

Solvent extraction of uranium from sulfate liquor acid ore with Alamine 336 from two suppliers has been studied. The influence of various parameters, such as sulfuric acid concentration on uranium bearing solutions, concentration of Alamine 336, and concentration of uranium was investigated. The decrease of uranium efficiency extraction at the plant was caused by the degradation of the organic phase. Degradation caused by the presence of vanadium in the uranium ore. Two theoretical stages could efficiency extract more than 90% of uranium from a solution containing 3881 mg/L at O/A ratio of 1.5:1. At the range of sulfuric acid concentration of 0.1 M to 0.2 M, Uranium efficiency was enhanced from 89% to 92 at the 1st contact and from 18% to 20% at the second contact. At this range of concentration, the UO2(SO4)2/2 species predominate. For sulfuric acid concentrations over 0.2 M the uranium efficiency decreased due to the presence of UO2(SO4)2/2 and UO2(SO4)3/4 species. Improving volume percentage of Alamine 336 in organic phase enhanced the uranium efficiency to 99%.

Publisher

Oriental Scientific Publishing Company

Subject

Drug Discovery,Environmental Chemistry,Biochemistry,General Chemistry

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