Results 11 to 20 of about 82 (54)

Selective recovery of rare earth elements from e-waste via ionic liquid extraction : A review [PDF]

open access: yes, 2022
Increasing generation of electronic waste (e-waste) is a major concern for emerging rare earth elements (REEs) pollution if not appropriately disposed of. Nevertheless, e-waste could be considered as a secondary source for critical REEs mining. Under the
He, Chao, Kaim, Vishakha, Rintala, Jukka
core   +2 more sources

Recent trends in metals extraction [PDF]

open access: yes, 2015
After near 70 years of practical usage, solvent extraction is a perfectly mastered technique of separation, widely used on an industrial scale for the separation of metals mainly from raw materials.
Alguacil, Francisco José   +1 more
core   +4 more sources

Neodymium recovery from NdFeB magnet wastes using Primene 81R·Cyanex 572 IL by solvent extraction [PDF]

open access: yes, 2018
The necessity of Rare Earth Elements (REEs) recycling is crucial to minimizing their supply risk and provide an alternative to greener technologies.
Coll Ausió, Mª Teresa   +3 more
core   +2 more sources

Rare earths separation from fluorescent lamp wastes using ionic liquids as extractant agents [PDF]

open access: yes, 2018
Processing of end-of-life products has become essential in the rare earth elements (REEs) recovery field because the demand for these metals has increased over the last years due to their intensive use in advanced technologies.
Coll Ausió, Mª Teresa   +3 more
core   +2 more sources

Selection criteria of diluents of tri-n-butyl phosphate for recovering neodymium(III) from nitrate solutions [PDF]

open access: yes, 2020
The selection of a proper diluent should be based on several criteria such as the distribution ratio, phase disengagement time, cost, safety and environmental impact of the process. The effect of different diluents on the solvent extraction of Nd(III) by
Agrawal   +53 more
core   +1 more source

A Phosphonic Functionalized Biopolymer for the Sorption of Lanthanum (III) and Application in the Recovery of Rare Earth Elements [PDF]

open access: yes, 2023
Authors of the article state that in the first step of their experiment, the sorption was investigated using La(III) ions before testing for the recovery of rare earth elements (REEs) from pretreated industrial acidic leachate.
Abdellah, Walid M.   +6 more
core   +1 more source

Liquid-liquid separation of nickel and cobalt by using versatic acid 10 + PRIMENE 81-R in sulphate medium [PDF]

open access: yes, 2017
Unit mass transfer operations gather lots of different techniques to separate compounds. These, are based on the exploiment of different physical and chemical properties of the compounds involved.
Plaza Jiménez, Carlos
core   +2 more sources

Sulfuric acid baking and leaching of spent sulfuric acid catalyst [PDF]

open access: yes, 2011
Vanadium, iron and aluminum were recovered from the spent sulfuric acid catalyst with efficiency of 98%, 95% and 85%, respectively by using low temperature sulphuric acid baking followed by leaching.
Abdulbake, Mohamedalkhaled   +2 more
core   +2 more sources

Removal of metal ions from aqueous solutions by extraction with ionic liquids [PDF]

open access: yes, 2010
This work analyzed the extraction of Zn2+, Cd2+, and Fe3+ from aqueous hydrochloride solutions using ionic liquids in the absence of chelating agents. For this purpose, ionic liquids based on 1-(n-alkyl)-3-methylimidazolium and tetraalkylammonium cations
Godínez Seoane, Carlos   +5 more
core   +2 more sources

Vanadium sustainability in the context of innovative recycling and sourcing development [PDF]

open access: yes, 2020
This paper addresses the sustainability of vanadium, taking into account the current state-of-the-art related to primary and secondary sources, substitution, production, and market developments.
Amato, A.   +5 more
core   +1 more source

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