[1PS-222]
우수논문발표상 응모자Design and Functional Evaluation of UCST-type Ionic Liquids as Thermoresponsive Draw Solutes for Forward Osmosis
발표자최광호 (동아대)
연구책임자강효 (동아대학교)
Abstract
Eight ionic liquids were synthesized by combining dodecyltrimethylammonium or octyltrimethylammonium cations with four fluorinated anions. Among them, [N11112][OTf], [N11112][BF4], and [N1118][BF4] exhibited UCST behavior in water at 20 wt%, with transition temperatures of 35, 45, and 39 oC, and conductivities of 9.22, 19.01, and 32.13 mS/cm. In forward osmosis using deionized water, water fluxes were 18.75, 27.87, and 34.59 LMH in the AL-FS mode and 20.34, 36.09, and 37.53 LMH in the AL-DS mode. With brackish water fluxes were 12.39, 22.80, and 31.56 LMH in the AL-Fs mode and 15.39, 29.94, and 33.15 LMH in the AL-DS mode. Recycling of [N1118][BF4] showed flux decline from 37.53 to 12.18 LMH over four thermal cycles. Antibacterial testing showed over 99% inhibition against E. coli and S. aureus. These results demonstrate the potential of UCST-type ionic liquids as thermoresponsive and antibacterial draw solutes for forward osmosis.