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Seyyed Alizadeh Ganji, S., Shafaie, S., Goudarzi, N. (2016). Investigation of performances of solvents D2EHPA, Cyanex272, and their mixture system in separation of some rare earth elements from a Nitric Acid solution. Journal of Mining and Environment, 7(2), 143-148. doi: 10.22044/jme.2016.476
Seyyed M. Seyyed Alizadeh Ganji; S. Z. Shafaie; N. Goudarzi. "Investigation of performances of solvents D2EHPA, Cyanex272, and their mixture system in separation of some rare earth elements from a Nitric Acid solution". Journal of Mining and Environment, 7, 2, 2016, 143-148. doi: 10.22044/jme.2016.476
Seyyed Alizadeh Ganji, S., Shafaie, S., Goudarzi, N. (2016). 'Investigation of performances of solvents D2EHPA, Cyanex272, and their mixture system in separation of some rare earth elements from a Nitric Acid solution', Journal of Mining and Environment, 7(2), pp. 143-148. doi: 10.22044/jme.2016.476
Seyyed Alizadeh Ganji, S., Shafaie, S., Goudarzi, N. Investigation of performances of solvents D2EHPA, Cyanex272, and their mixture system in separation of some rare earth elements from a Nitric Acid solution. Journal of Mining and Environment, 2016; 7(2): 143-148. doi: 10.22044/jme.2016.476

Investigation of performances of solvents D2EHPA, Cyanex272, and their mixture system in separation of some rare earth elements from a Nitric Acid solution

Article 36, Volume 7, Issue 2, Summer 2016, Page 143-148  XML PDF (448.29 K)
Document Type: Case Study
DOI: 10.22044/jme.2016.476
Authors
Seyyed M. Seyyed Alizadeh Ganji email 1; S. Z. Shafaie2; N. Goudarzi3
1School of Mining, Petroleum & Geophysics Engineering, Shahrood University of Technology, Shahrood, Iran
2School of Mining Engineering, College of Engineering, University of Tehran, Tehran, Iran
3Faculty of Chemistry, Shahrood University of Technology, Shahrood, Iran
Abstract
This work was aimed to evaluate and compare the performances of the solvents D2EHPA (Di-(2-ethylhexyl) phosphoric acid), Cyanex 272 (bis (2,4,4-trimethylpentyl) phosphinic acid), and a mixture system of D2EHPA and Cyanex272 in the separation of some rare earth elements (REEs) including lanthanum, gadolinium, neodymium, and dyspersym from a nitric acid solution. The results obtained showed that Cyane272 had the lowest separation factor in the separation of Dy, La, Nd, and Gd from each other. Also it was found that a mixture system of D2EHPA and Cyanex272 had the best performance in the separation of the investigated REEs, owing to the higher separation factors for Dy/Nd and Dy/Gd, as well as the lower extraction efficiencies for Gd (64.54%), La (30.07%), and Nd (26.47) from Dy (99.92). It was also determined that the separation factors forDy/Nd and Dy/Gd were 720.05 and 3640.27, respectively, using their mixture system.
Keywords
Rare Earth Elements (REEs); Separation Factor; D2EHPA; Cyanex272; Mixture System
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