Recovery of aprotic polar solvents from their saline aqueous solutions
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United States of America Patent
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Oct 17, 1995
Issued Date -
N/A
app pub date -
Aug 8, 1994
filing date -
Oct 2, 1991
priority date (Note) -
Expired
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Abstract
The invention relates to recovery of an aprotic polar solvent from a saline aqueous solution of this solvent, by a process which consists in desalting the said solution by electrodialysis then in distilling the desalted solution. To avoid precipitation of metal hydroxides during the electrodialysis, the brine is kept at an acidic pH.
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