Forward Osmosis Desalination Using Thermoresponsive Ionic Liquids: Bench-Scale Demonstration and Cost Analysis.

ABSTRACT: Forward osmosis (FO) desalination using thermoresponsive ionic liquid (IL)-water mixtures is a promising technology for treating nontraditional water sources. However, its demonstration has primarily been at the lab-scale, with water flux and recovery values that are not representative of realistic applications. In this work, the performance of tetrabutyl-phosphonium trifluoroacetate (P₄₄₄₄TFA), as well as a new dual draw of P₄₄₄₄TFA with tetrabutyl-ammonium trifluoroacetate (N₄₄₄₄TFA) is characterized. The dual draw combines the higher osmolality of one IL with the lower critical solution temperature (LCST) of the second IL to outperform its constituents at the same total concentration of IL in water (70 wt %). Experiments were first performed in a lab-sca

SUBMITTER: Haddad AZ 

PROVIDER: S-EPMC12006984 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature