Application of Deep Eutectic Solvents in Green Separation Chemistry
A special issue of Separations (ISSN 2297-8739). This special issue belongs to the section "Purification Technology".
Deadline for manuscript submissions: 10 August 2024 | Viewed by 3110
Special Issue Editors
Interests: quaternization reactions; synthesis of derivatives of vitamins B6 and B3, synthesis of pyridinium oxime compounds, microwave synthesis, ultrasonic synthesis, synthesis in deep eutectic solvents
Interests: deep eutectic solvents; coumarins; quinazolinones; synthesis
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
Organic solvents are useful for dissolving certain materials and substances. Most organic solvents are volatile organic compounds (VOCs). Within the concept of green chemistry, one of the goals is to replace VOCs with less volatile and less toxic ones called green solvents. Deep eutectic solvents (DESs) were introduced in 2003, and their “green” properties have attracted increasing attention. As a novel green solvent, DESs have been applied rapidly in organic reactions, material synthesis, extraction, electrochemistry, catalysis, biotreatment, and enzyme reactions. DESs have been implemented widely in the extraction and production of various target compounds and as green extracting agents.
Therefore, it is my pleasure to invite you to contribute your research article, communication, or review to this Special Issue dedicated to “Application of Deep Eutectic Solvents in Green Separation Chemistry” which aims to present the latest advances in the research, development, and application of deep eutectic solvents. Different thematic areas will be included such as DESs in the green separation process, applications in extractions and capillary electrochromatography, the synthesis of new types of DESs and their special properties, the experimental application of extraction in DESs in industrial scales, molecular dynamics studies to understand mechanisms and interactions with DESs, etc.
Dr. Bušić Valentina
Dr. Maja Molnar
Guest Editors
Manuscript Submission Information
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Keywords
- green separation process
- DESs in extraction processes
- chromatographic separation techniques
- organic synthesis in DESs
- DESs in industrial scales
- molecular dynamics studies
Planned Papers
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Title: Application of natural terpene-based solvents as reaction media for Pb(II) complexation during LLE procedure
Authors: Mersiha Suljkanović, a) Jasmin Suljagić, b) Edita Bjelić, Perica Boškovićc)
Affiliation: a) Faculty of Science, Urfeta Vejzagica 4, 75000 Tuzla, Bosnia and Herzegovina
b) Faculty of Technology, Urfeta Vejzagica 8, 75000 Tuzla, Bosnia and Herzegovina
c) University of Split, Faculty of Science, Ruđera Boškovića 33, 21000 Split, Croatia
Abstract: Solvents prepared from natural terpenes (menthol and thymol) as H-bond acceptors and series of organic acids (chain lengths from 8 to 18 C atoms), as H-bond donors, previously investigated and characterized [1], were tested as reaction media for liquid-liquid extraction purposes. Due to their high hydrophobicity, they seem to be promising alternatives to conventional (nonpolar and toxic) solvents, since they posses relatively less toxic, less volatile and consequently, more environmentally friendly characteristics [2]. Assuming that the equilibrium is established between solvent and analyte during ligandless procedure, it can be concluded that those nonpolar solvents can efficiently extract nonpolar analytes from the aqueous environment. Previous investigations [3-6] showed a wide range of applications, including their use as solvents in extractions of metal cations, small-molecules and bioactive compounds for food and pharmaceutical applications.
In this work, four hydrophobic solvents based on natural terpenes, which showed chemical stability and desirable physicochemical and thermal properties, were chosen as potential reaction solvents in LLE procedure for Pb(II) removal from river sediment samples. Extraction parameters (solvent volume, equilibrium time, pH value) were optimized and chosen solvents were applied. The results showed satisfactory extraction efficiencies in simple, ligandless and fast procedure, followed by low solvent consumption. The best results (>98%) were obtained by the thymol based solvent (Thy:DecA=1:1), but menthol based solvents (Men:DecA=1:1 and Men:OctA=1:1), also showed 97% of effectiveness.
