Abstract
This study focuses on the extraction of rare-earth elements (REE) using eight newly formulated synergist extractants and the performance was compared with that using the conventional extractants. Extraction was conducted on selected REE namely praseodymium (Pr), gadolinium (Gd) and dysprosium (Dy) representing light, medium and heavy REE, respectively. The synergist extractant of A336-[C 2 mim][NTf 2 ] appeared to be the most positive synergist extractant, especially in the extraction of Pr and Dy based on a 90% increase in the extraction efficiency compared to the conventional extractant of A336. Apparently, the presence of the ionic liquid [C 2 mim][NTf 2 ] in the synergist extractant altered the anion exchanger of A336 and successfully formulated extractant with a high extraction efficiency. The characterisation studies of A336-[C 2 mim][NTf 2 ] show the synergist compatibility between A336 and [C 2 mim][NTf 2 ]. Apparently, not all synergist extractants could elevate the extraction potential until conducting a sequence of tests. • The extraction of rare earth metals using a conventional organic solvent (extractant) is compared with that using a synergist extractant. • The performance of synergist extractant is highly influenced by the type of conventional extractant used. • A336-[C 4 mim][NTf 2 ] and A336-[C 2 mim][NTf 2 ] are the most outstanding synergist extractants.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
