Journal
SEPARATION AND PURIFICATION TECHNOLOGY
Volume 282, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.seppur.2021.120034
Keywords
Thermo-separating; Magnetic ionic liquid; Aqueous two-phase system; Phase behaviour; Phenol
Categories
Funding
- National Natural Science Foundation of China [81803486]
- China postdoctoral Science Foundation [2018 M633385]
- Sichuan Science and Technology Pro-gram [2019YJ0030, 2021YJ0477]
Ask authors/readers for more resources
The report introduces thermo-separating magnetic ionic liquids (MILs) for the first time, detailing the synthesis, characterization, and application of two PPG600-based thermo-separating MILs, which were used to create a novel MILATPS system. The system showed high extraction efficiencies for phenolic compounds, exceeding 90%, and demonstrated potential for industrial treatment of phenolic wastewater with efficient recovery processes.
In this report, thermo-separating magnetic ionic liquids (MILs) were discovered for the first time. Two Polypropylene glycol 600 (PPG600) based thermo-separating MILs were synthesized, characterized and successfully applied to construct the first reported thermo-separating magnetic ionic liquid aqueous two-phase system (MILATPS). This novelly proposed thermo-separating MILATPS combined the advantages of rapid extraction, volatile organic solvent free, magnetic separation and thermo-recovery of MIL in an extraction process. Phase behaviors and extraction-recovery processes of phenol, o-cresol and m-cresol were systematically studied. Several influencing factors on phenolic compound extraction efficiencies were detailedly investigated and optimized. Under optimal conditions, both two synthesized thermo-separating MILs revealed good performances with extraction efficiencies higher than 90%. Scale-up studies were also satisfactory. Additionally, both high purities of MILs and phenolic compounds could be ideally recovered simply by heating and the recoveries of phenolic compounds were higher than 95% for all systems. Furthermore, the two MILs could be recycled for at least 6 times with steadily high extraction efficiencies. This novelly proposed thermo-separating MILATPS is simple and green method which is showing great potential in an extraction-recovery process and the industrial treatment of phenolic wastewater.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available