Abstract
Thermoresponsive magnetic ionic liquids (TMILs) showing lower critical solution temperature (LCST)-behavior were fabricated and utilized as forward osmosis (FO) draw solutes for seawater desalination. The MILs, 8-alkyl-1,8-diazabicyclo[5.4.0]undec‑7-ene bromotrichloroferrate (DBU-R[FeBrCl3], or d-R-FeX4) with different alkyl chain lengths (R = C4H9, C6H13, C7H15, or C8H17), exhibited tunable LCSTs from 30 to 65 °C by varying the chain length and the solution concentration. Upon heating above their LCSTs, more than 43% of the TMILs could be magnetically extracted via phase separation, demonstrating a facile magnet-assisted draw solution regeneration approach. In addition, an aqueous solution containing 25 wt% D-Bu-FeX4 was able to achieve a water flux as high as 4.5 L m−2h−1 (LMH) in desalinating seawater. Their ionic nature, together with unique thermo- and magnetic-responsive behaviors, make them promising candidates as ideal FO draw solutes for desalination and wastewater reclamation.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
