Carboxylic acid purification and crystallization process

Details Carboxylic acid purification and crystallization process Carboxylic acid purification and crystallization process

1989-07-27

1991-07-23

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

2041826, 562593, 562607, 562608, 562580, 435136, 435140, B01D 902

Patent

active

050341057

ABSTRACT:
A process for preparing a carboxylic acid of high purity comprises preparing an undersaturated solution of a salt of the carboxylic acid; subjecting the undersaturated salt solution to water-splitting electrodialysis to form base and a supersaturated solution of the carboxylic acid; and, then crystallizing the carboxylic acid from the supersaturated solution. In the preferred embodiment, the undersaturated solution is a fermentation broth containing sodium succinate and the carboxylic acid obtained is succinic acid.

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