scholarly journals Purification of indium by solvent extraction with undiluted ionic liquids

2016 ◽  
Vol 18 (14) ◽  
pp. 4116-4127 ◽  
Author(s):  
Clio Deferm ◽  
Michiel Van de Voorde ◽  
Jan Luyten ◽  
Harald Oosterhof ◽  
Jan Fransaer ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Solvent Extraction ◽  
Environmentally Friendly ◽  
Aliquat 336 ◽  
Precipitation Stripping ◽  
Cyphos Il 101

The ionic liquids Cyphos IL 101 and Aliquat 336 are environmentally friendly extractants for purification of indium. Precipitation stripping with NaOH was used to recover indium after extraction.

scholarly journals Extraction and separation of neodymium and dysprosium from used NdFeB magnets: an application of ionic liquids in solvent extraction towards the recycling of magnets

2015 ◽  
Vol 17 (5) ◽  
pp. 2931-2942 ◽  
Author(s):  
Sofía Riaño ◽  
Koen Binnemans
Keyword(s):  
Ionic Liquids ◽  
Solvent Extraction ◽  
Environmentally Friendly ◽  
Extraction System ◽  
Ndfeb Magnets ◽  
Extraction And Separation

Neodymium, dysprosium and cobalt can be efficiently separated using a simple and environmentally friendly extraction system with ionic liquids.

scholarly journals Separation of Gallium(III) and Indium(III) by Solvent Extraction with Ionic Liquids from Hydrochloric Acid Solution

Processes ◽  
2020 ◽  
Vol 8 (11) ◽  
pp. 1347
Author(s):  
Si Jeong Song ◽  
Minh Nhan Le ◽  
Man Seung Lee
Keyword(s):  
Ionic Liquids ◽  
Solvent Extraction ◽  
Hydrochloric Acid ◽  
Acid Solution ◽  
Hydrochloric Acid Solution ◽  
Complete Separation ◽  
Aliquat 336 ◽  
Batch Simulation ◽  
Initial Ph ◽  
Counter Current

The manufacture of semiconductor materials containing gallium and indium requires the separation of these metals owing to their coexistence in the resources of these materials. In this work, solvent extraction of In(III) and Ga(III) from a hydrochloric acid solution by ionic liquids (ILs) was investigated to separate them. The ILs were synthesized by reacting organophosphorus acids (Cyanex 272, PC88A and D2EHPA) and Aliquat 336 (ALi-CY, ALi-PC, and ALi-D2). In(III) was selectively extracted over Ga(III) by the ILs in the range of initial pH from 0.1 to 2.0. The equilibrium pH was always higher than the initial pH because of the coextraction of hydrogen ions. The highest separation factor between In(III) and Ga(III) was 87, which was obtained by ALi-PC at an initial pH of 1.0. Stripping of the loaded ALi-PC with hydrochloric and sulfuric acid led to selective stripping of In(III) over Ga(III). Scrubbing of the loaded ALi-PC with pure In(III) solution was not effective in removing the small amount of Ga(III) present in the loaded ALi-PC. Batch simulation experiments for the three counter-current extraction stages indicated that the complete separation of both metal ions was possible by extracting In(III) using ALi-PC, with remaining Ga(III) in the raffinate.

scholarly journals Two-Step Solvent Extraction of Radioactive Elements and Rare Earths from Estonian Phosphorite Ore Using Nitrated Aliquat 336 and Bis(2-ethylhexyl) Phosphate

Minerals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 388
Author(s):  
Silvester Jürjo ◽  
Liis Siinor ◽  
Carolin Siimenson ◽  
Päärn Paiste ◽  
Enn Lust
Keyword(s):  
Rare Earth ◽  
Solvent Extraction ◽  
Rare Earth Elements ◽  
Toxic Elements ◽  
Downstream Processing ◽  
Liquid Extraction ◽  
Aliquat 336 ◽  
Radioactive Elements ◽  
Improved Method ◽  
Ph Values

Estonian phosphorite ore contains trace amounts of rare earth elements (REEs), many other d-metals, and some radioactive elements. Rare earth elements, Mo, V, etc. might be economically exploitable, while some radioactive and toxic elements should be removed before any other downstream processing for environmental and nutritional safety reasons. All untreated hazardous elements remain in landfilled waste in much higher concentration than they occur naturally. To resolve this problem U, Th, and Tl were removed from phosphorite ore at first using liquid extraction. In the next step, REE were isolated from raffinate. Nitrated Aliquat 336 (A336[NO3]) and Bis(2-ethylhexyl) Phosphate (D2EHPA) were used in liquid extraction for comparison. An improved method for exclusive separation of radioactive elements and REEs from phosphorite ore in 2-steps has been developed, exploiting liquid extraction at different pH values.

Phosphonium ionic liquids as new, reactive extractants of lactic acid

2006 ◽  
Vol 60 (5) ◽  
Author(s):  
J. Marták ◽  
Š. Schlosser
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Lactic Acid ◽  
Reverse Micelles ◽  
Distribution Coefficients ◽  
Coordination Mechanism ◽  
Acid Extraction ◽  
Cyphos Il 101 ◽  
Cyphos Il 104 ◽  
Phosphonium Ionic Liquids

AbstractSolvent properties of ionic liquids with trihexyltetradecylphosphonium cation and bis(2,4,4-trimethylpentyl)phosphinate anion (Cyphos IL-104) or chloride anion (Cyphos IL-101) were studied. IL-104 effectively extracted lactic acid (LA) with distribution coefficients above 40 at low acid concentrations. IL-104 extracted only undissociated acid (LAH) what supported the coordination mechanism of lactic acid extraction via H-bonding. In the extraction of lactic acid by phosphonium chloride (IL-101) an ion-exchange mechanism contributed remarkably to the extraction especially at basic pH where anionic form of this acid predominated. A high solubility of water in hydrophobic IL-104 up to 14.4 mass % was connected with the formation of reverse micelles. A dual mechanism of water extraction to phosphonium ionic liquids was identified, which consisted of water incorporation into reverse micelles and the inclusion of water into the hydrated complex of lactic acid with ionic liquid (IL). The extraction of lactic acid caused splitting of reverse micelles with liberation of water from the solvent. In the saturated solvent only hydration water remained in the complex of lactic acid with phosphonium ionic liquid, with the suggested structure (LAH)p(IL)(H2O)2, where the value of p ranged from 1 to 3.

Lipase purification using ionic liquids as adjuvants in aqueous two-phase systems

2015 ◽  
Vol 17 (5) ◽  
pp. 3026-3034 ◽  
Author(s):  
Ranyere L. Souza ◽  
Sónia P. M. Ventura ◽  
Cleide M. F. Soares ◽  
João A. P. Coutinho ◽  
Álvaro S. Lima
Keyword(s):  
Ionic Liquids ◽  
Environmentally Friendly ◽  
Two Phase ◽  
Separation Processes ◽  
High Purification ◽  
Aqueous Two Phase Systems ◽  
Phase Systems ◽  
Lipase Purification

Ionic liquids as adjuvant in aqueous two-phase systems (ATPS) are efficient, environmentally friendly, and “biocompatible” separation processes, which allow the high purification of enzymes.

scholarly journals Electrocarboxylation of 1-chloro-(4-isobutylphenyl)ethane with a silver cathode in ionic liquids: an environmentally benign and efficient way to synthesize Ibuprofen

RSC Advances ◽  
2019 ◽  
Vol 9 (26) ◽  
pp. 15115-15123 ◽  
Author(s):  
Silvia Mena ◽  
Jessica Sanchez ◽  
Gonzalo Guirado
Keyword(s):  
Ionic Liquids ◽  
Environmentally Friendly ◽  
Environmentally Benign ◽  
Green Technologies ◽  
Environmentally Friendly Approach ◽  
Silver Cathode

A new more environmentally friendly approach for synthesising Ibuprofen by using green technologies (electrochemistry and ionic liquids) and CO2 feedstock.

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