Greening industrial applications with magnetic-based deep eutectic solvents: A promising future

The field of green technology is evolving rapidly to address new industrial challenges, and deep eutectic solvents (DESs) have emerged as a potential alternative to traditional organic compounds and ionic liq-uids. Among their main classes, magnetic DESs (MagDESs) have gained significant attention due to their unique magnetic properties resulting from the presence of magnetic ions in the solvent. The unique mag-netic properties of MagDESs, combined with their stability and compatibility, make them suitable for var-ious applications, including magnetic separation and purification. The ease of separation of MagDESs from their respective mixtures via the application of an external magnetic field distinguishes them as a desirable solution, enabling quick extraction and easy collection without centrifugation. Moreover, DESs can serve to endow magnetic materials with new functionalities for a wide range of applications. Utilizing DESs enables the functionalization of magnetic materials without the use of volatile organic sol-vents or extended processing periods. MagDESs are expected to be used in the extraction of various com-pounds, but there are some limitations that must be considered, such as compatibility issues, recovery difficulty, and also long-term stability and sustainability of MagDESs in different environments and appli-cations. Further research and development are necessary to fully understand and optimize the benefits and limitations of MagDESs.& COPY; 2023 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.