Concurrent production of citric acid and alkali citrates

Details Concurrent production of citric acid and alkali citrates Concurrent production of citric acid and alkali citrates

1992-09-17

1993-07-27

Dees, Jose G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

562580, 562584, C07C 5142, C07C 59265

Patent

active

052312259

ABSTRACT:
The known liming sulfuric acid process for the recovery of crystalline citric acid from a fermentation broth is modified by subjecting the mother liquor from the crystallization to extraction with a water-immiscible organic extraction that contains an amine. The resulting extract is neutralized with a recycled brine with alkali citrate and alkali citrate is crystallized from the concentrated brine obtained this way.

REFERENCES:
patent: 3086928 (1963-04-01), Schulz
patent: 3944606 (1976-03-01), Rieger
patent: 4275234 (1981-06-01), Baniel et al.

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