Investigation of using dual-responsive imidazolium-based ionic liquid as draw solutes in forward osmosis
발표자
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초록
내용
Imidazolium-based magnetic ionic liquids (MILs) with dual responsiveness, a series of 1-alkyl-3-methylimidazolium tetrachloroferrates (Cn-FeCl4, n = 4, 8, and 12, where n denotes the number of carbon atoms in the alkyl group of 1-alkyl-3-methylimidazolium), were synthesized to assess their ability as draw solutes for forward osmosis (FO). The LCSTs of the C4-FeCl4, C8-FeCl4, and C12-FeCl4 solutions of 20 wt. % were about 76, 43, and 55 °C, respectively. The respective magnetic susceptibilities were 5.92 × 10-5, 4.53 × 10-5, and 4.12 × 10-5 emu cm−3 at 300 K. The water flux of C8-FeCl4 was about 17.30 LMH in active layer facing draw solution modes at 20 wt. %. Therefore, we first studied the effect of the structural transformation on draw solute properties and examined the applicability of dual-responsive MILs as draw solutes for FO.