Recovery of aprotic polar solvents from their saline aqueous sol

Details Recovery of aprotic polar solvents from their saline aqueous sol Recovery of aprotic polar solvents from their saline aqueous sol

1994-08-08

1995-10-17

Niebling, John

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

2041825, B01D 6144, B01D 6154

Patent

active

054587514

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.

REFERENCES:
patent: 4802965 (1989-02-01), Puetter et al.
patent: 5089102 (1992-02-01), Voss
patent: 5145569 (1992-09-01), Schneider et al.
Chemical Abstracts, vol. 88, 1978, p. 554, No. 88:152028v.

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