Solvent removal process
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United States of America Patent
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Jul 17, 2012
Grant Date -
May 19, 2011
app pub date -
Jan 24, 2011
filing date -
Jul 30, 2003
priority date (Note) -
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Abstract
A process for removing a solvent from a first solution, said process comprising positioning a selective membrane between the first solution and a second solution having a higher osmotic potential than the first solution, such that solvent from the first solution passes across the membrane to dilute the second solution, and extracting solvent from the second solution, wherein the membrane has an average pore size of at least 10 Angstroms, and wherein the second solution contains solute species that are too large to pass through the pores of the membrane.
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