Liquid-Liquid Extraction of Indium(III) from the HCl Medium by Ionic Liquid A327H+Cl− and Its Use in a Supported Liquid Membrane System

Abstract

Ionic liquid A327H+Cl− was generated by reaction of tertiary amine A327 and HCl, and the liquid-liquid extraction of indium(III) from the HCl medium by this ionic liquid dissolved in Solvesso 100 was investigated. The extraction reaction is exothermic. The numerical analysis of indium distribution data suggests the formation of A327H+InCl4− in the organic phase. The results derived from indium(III) extraction have been implemented in a supported liquid membrane system. The influence of the stirring speed (600–1200 min−1), carrier concentration (2.5–20% v/v) in the membrane phase, and indium concentration (0.01–0.2 g/L) in the feed phase on metal transport have been investigated.

Ionic Liquids as Components of Systems for Metal Extraction

“…Furthermore, a problem associated with the use of ILs as extractants is their high viscosity; therefore, they are dissolved in molecular solvents. This approach allows for producing highly efficient extraction systems for the recovery of indium(III) and gold(III) from electronic waste [21,22] and Mo(VI) in high (more than 99%) yields [23].…”

Indium(III) in the “Periodic Table” of Di(2-pyridyl) Ketone: An Unprecedented Transformation of the Ligand and Solid-State 115In NMR Spectroscopy as a Valuable Structural Tool

“…In the late 1990s, its demand, use, and value started rising rapidly due to the development of LCD monitors and television sets. 63 The major product related to the application of the metal is indium−tin oxide (ITO), whose thin films have commercially valuable properties (transparency, electric conductance, and reflection of IR radiation) with varied uses. 64 Currently, In(III) materials and molecular complexes are relevant to various aspects of materials chemistry (e.g.…”

“…There has been a renaissance in the chemistry of indium since 2010. In the late 1990s, its demand, use, and value started rising rapidly due to the development of LCD monitors and television sets . The major product related to the application of the metal is indium–tin oxide (ITO), whose thin films have commercially valuable properties (transparency, electric conductance, and reflection of IR radiation) with varied uses .…”

The Extraction and Separation of Scarce Critical Metals: A Review of Gallium, Indium and Germanium Extraction and Separation from Solid Wastes

“…Waste semiconductor materials, fiber optic products, and light-emitting diodes (LEDs) are secondary resources with high Ga content. Approximately 95% of global In comes from the by-products in the zinc refining system [13], while In is enriched to varying degrees due to the different smelting methods. In is mainly concentrated in the furnace slag, flue dust, anode mud, and leaching residues [14].…”