Relevance on the Recovery of High Economic Value Elements and Potential of Ionic Liquids

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abstract

The increasing demand for critical raw materials, along with the increasing need of making the related industrial processes sustainable, highlights the importance of obtaining them from secondary or alternative sources. Lithium, cobalt, and nickel, as well as other critical elements (platinum, palladium, gallium, germanium, indium, and niobium), are present in wastewaters of industries using emerging technologies, which should be recovered due to their high economic value while fulfilling the circular economy concept. In this field, ionic liquids (ILs) have gained increased interest as extraction solvents and materials due to their unique properties, namely, the possibility of different cation-anion combinations that allow to improve selectivity and extraction/sorption efficiency for critical elements. Moreover, ionic liquids regeneration may be possible, representing an additional economic advantage. In this book chapter, it is provided the state of the art on the application of ILs in the recovery of high economic value elements from aqueous matrices. It should be remarked that despite its relevance, to date the ionic liquids feasibility has not been evaluated under realistic industrial wastewater conditions (element concentrations, sorption time, composition of multi-element systems).

authors

Almeida, J. C.; Cardoso, C. E. D.; Trindade, T.; Freire, M. G.; Pereira, E.

our authors

foto Celso Cardoso

Celso Cardoso

PhD Student
foto Joana C. Almeida

Joana C. Almeida

Researcher
foto Mara Guadalupe Freire Martins

Mara Guadalupe Freire Martins

Coordinating Researcher
foto Tito Trindade

Tito Trindade

Full professor

Groups

G1 - Porous Materials and Nanosystems
G4 - Renewable Materials and Circular Economy
G5 - Biomimetic, Biological and Living Materials

Other

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Publication Details

type
Book Chapter
year
2022
Book Title
Handbook of Solid Waste Management: Sustainability through Circular Economy
publisher
Springer
isbn
978-981-16-4229-6
book digital object identifier
10.1007/978-981-16-4230-2_98

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