Selection of Extractant in Rare Earth Solvent Extraction System: A Review
Nurul Ain Ismail1, Mohd Aizudin Abd Aziz2, Mohd Yusri Mohd Yunus3, Anwaruddin Hisyam4
1Nurul Ain Ismail, Earth Resources & Sustainability Center, Universiti Malaysia Pahang, Pahang, Malaysia.
2Mohd Aizudin Abdul Aziz, Faculty of Chemical and Natural Resources Engineering, Universiti Malaysia Pahang, Universiti Malaysia Pahang, Pahang, Malaysia.
3Mohd Yusri Mohd Yunus, Earth Resources & Sustainability Center, Universiti Malaysia Pahang, Pahang, Malaysia.
4Anwaruddin Hisyam, Faculty of Chemical and Natural Resources Engineering, Universiti Malaysia Pahang, Universiti Malaysia Pahang, Pahang, Malaysia.
Manuscript received on 13 April 2019 | Revised Manuscript received on 19 May 2019 | Manuscript published on 30 May 2019 | PP: 728-743 | Volume-8 Issue-1, May 2019 | Retrieval Number: F2887037619/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The process of separation, extraction, and purification in obtaining rare earth metals from the minerals is a tedious work due to the similarity of the rare earth metals in chemical and physical properties. Besides designing the rare earth extraction sequence and removing the impurities, the selection step for the type of extractant is also a crucial phase. There are numerous possible combinations of extractant – metal in rare earth separation, ranging from single extractant system to multiple extractant systems. This paper aimed to guide and suggest the best extractant, subject to the leaching condition and the targeted end product. Each type of extractant is revised separately in providing the mechanism and interaction of the rare earth metals. This paper also evaluate the past and current trends of these extractants besides identifying their strong point and the drawbacks.
Index Terms: DEHPA, EHEHPA, Extractant, Rare Earth, Solvent Extraction
Scope of the Article: Artificial Intelligence Approaches to Software Engineering