Journal of Metals, Materials and Minerals
Publication Date
2025
Abstract
This study explores the extraction of Nd(III) from synthetic solutions using the ionic liquid [P66614] [Cy272]. Key extraction parameters, including the effect of phase contact time, initial pH, salting-out agents, extractant concentration, and temperature, were systematically optimized. Results revealed that a phase contact time of 15 min, an initial pH of 2.14, and 0.2 mol∙L‒1 NaCl as a salting-out agent and extractant concentration of 0.015 mol∙L‒1 [P66614][Cy272], achieved maximum extraction efficiency of 99.7%. Thermodynamic analysis confirmed the process is to be exothermic, spontaneous, and entropy-driven, highlighting the strong complexation between Nd(III) and the ionic liquid [P66614][Cy272]. Stripping tests revealed that using 0.1 mol∙L‒1 H₂SO₄, achieved complete recovery (100%) of Nd(III) from the loaded-organic phase. These findings underscore the potential of [P66614][Cy272] ionic liquid as a green, efficient alternative to conventional extractants, providing high efficiency and reduced environmental impact. This research advances hydrometallurgical recycling of REEs, particularly from end-of-life NdFeB magnets, supporting sustainable resource recovery and addressing global supply challenges for critical materials.
DOI
10.55713/jmmm.v35i3.2252
First Page
-
Last Page
-
Recommended Citation
Das, Prasanjit; Sanjay, Kali; and Devi, Niharbala
(2025)
"Liquid-liquid extraction of Nd(III) using [P66614][Cy272] ionic liquid,"
Journal of Metals, Materials and Minerals: Vol. 35:
No.
3, Article 5.
DOI: 10.55713/jmmm.v35i3.2252
Available at:
https://digital.car.chula.ac.th/jmmm/vol35/iss3/5