Daoud, J., Zeid, M., Ibrahim, M., Aly, H. (2020). CYANEX 925 As Potential Extractant For the Extraction and Separation of Zirconium (IV) And Niobium (V) From nitric acid Solution. test, 53(4), 134-146. doi: 10.21608/ajnsa.2020.27556.1345
Jacqueline Daoud; Mohamad Mohamad Zeid; Mohamad Mohamad Ibrahim; Hisham Fouad Aly. "CYANEX 925 As Potential Extractant For the Extraction and Separation of Zirconium (IV) And Niobium (V) From nitric acid Solution". test, 53, 4, 2020, 134-146. doi: 10.21608/ajnsa.2020.27556.1345
Daoud, J., Zeid, M., Ibrahim, M., Aly, H. (2020). 'CYANEX 925 As Potential Extractant For the Extraction and Separation of Zirconium (IV) And Niobium (V) From nitric acid Solution', test, 53(4), pp. 134-146. doi: 10.21608/ajnsa.2020.27556.1345
Daoud, J., Zeid, M., Ibrahim, M., Aly, H. CYANEX 925 As Potential Extractant For the Extraction and Separation of Zirconium (IV) And Niobium (V) From nitric acid Solution. test, 2020; 53(4): 134-146. doi: 10.21608/ajnsa.2020.27556.1345

CYANEX 925 As Potential Extractant For the Extraction and Separation of Zirconium (IV) And Niobium (V) From nitric acid Solution

Arab Journal of Nuclear Sciences and Applications
Article 15, Volume 53, Issue 4, October 2020, Pages 134-146    PDF (877.64 K)
Document Type: Original Article
DOI: 10.21608/ajnsa.2020.27556.1345
Authors
Jacqueline Daoud* 1; Mohamad Mohamad Zeid2; Mohamad Mohamad Ibrahim3; Hisham Fouad Aly4
1Professor of Radio-Inorganic Chemistry, Chemistry of Nuclear Fuel Department, Hot Laboratories Centre, Atomic Energy Authority
2Chemistry of Nuclear Fuel Department, Hot Laboratories Centre, Atomic Energy Authority
3Assistant Professor, Chemistry of Nuclear Fuel department, Hot Laboratories Centre, Atomic Energy Authority
4Professor of Nuclear Chemistry, Chemistry of Nuclear Fuel department, Hot Laboratories Centre, Atomic Energy Energy Authority
Abstract
The potential use of CYANEX 925 in kerosene for the extraction and separation of Zirconium (IV) and Niobium (V) from nitric acid solution is explored. The effects of the different parameters affecting the extraction process as extractant, metal, nitric acid and nitrate concentrations as well as temperature were separately investigated. Stripping investigations on the recovery of Zr(IV) and Nb(V) from their loaded organic solutions were also carried out. The obtained results indicate that the extracted metal species are Zr(NO‌3)‌‌4.CYANEX 925 and Nb(OH)2(NO‌3)3.CYANEX 925 for Zr(IV) and Nb(V), respectively. The difference in the extraction and stripping behavior of the investigated metals indicated that a good separation between Zr(IV) and Nb(V) could be obtained when carrying out the extraction from low nitric acid concentration at low temperature or when using 1M sulphuric acid for stripping 99% of Zr(IV) with nearly no stripping of Nb(V) from the loaded organic solution. The obtained results indicate that CYANEX 925 is a promising extractant for high extraction and separation of Zr(IV) and Nb(V) from nitric acid solution compared with other organophosphorus extractants.
Keywords
: CYANEX925; Zirconium (IV); Niobium(V); Nitric Acid; Liquid-liquid extraction
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