DRAW SOLUTES, METHODS OF FORMING DRAW SOLUTES, AND METHODS OF USING DRAW SOLUTES TO TREAT AN AQUEOUS LIQUID
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United States of America Patent
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Issued Date -
Feb 28, 2013
app pub date -
May 24, 2012
filing date -
Aug 26, 2011
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Abandoned
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Abstract
A method of treating an aqueous liquid. The method comprises providing an aqueous feed liquid comprising water and at least one solute to a first side of a membrane. A draw solution comprising water and a draw solute comprising at least one of a phosphazene compound and a triazine compound is provided to a second side of the membrane. At least a portion of the water of the aqueous feed liquid is osmosed across the membrane and into the draw solution to form a diluted draw solution comprising water and the draw solute. The water of the diluted draw solution is separated from the draw solute of the diluted draw solution to form a purified water product. Draw solutes comprising phosphazene compounds and draw solutes comprising triazine compounds are also disclosed, as are methods of forming the draw solutes.
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