HYPERSALINE DESALINATION USING IONIC LIQUIDS AND LOW-TEMPERATURE HEAT
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United States of America
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Nov 28, 2024
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Sep 19, 2022
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Sep 19, 2022
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Abstract
Described herein are compositions and methods for the low-temperature desalination of high-salinity water such as seawater or high-salt groundwater. In one embodiment, one or more of the ionic liquids, 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([emim][Tf2N]), 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide ([bmim][Tf2N]), 1-ethyl-3-methylimidazolium tosy late ([emim][TsO]), tetrabutylphosphonium tosylate ([P4444][TsO]), tetrabutylphosphonium bis(trifluoromethylsulfonyl) imide ([P4444][Tf2N]), trihexyltetradecylphosphonium bis(trifluoromethanesulfonyl) imide ([P66614][Tf2N]), tributyloctylphosphonium bis(trifluoromethanesulfonyl) imide ([P4448][Tf2N]). tributyloctylphosphonium benzo[d]imidazol-1-ide ([P4448][BzIm]), tributyloctylphosphonium trifluoromethanesulfonylleucine ([P4448][I-Leu]), 1-(methoxymethyl)-3-methyl-1H-imidazol-3-ium bis(trifluoromethylsulfonyl)imide ([mommim][Tf2N]), or 1-eth-yl-3-methyl-1H-1,2,3-triazol-3-ium bis(trifluoromethylsulfonyl)imide ([1,2,3-emtriz][Tf2N]), can be used to efficiently desalinate high salinity water.
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