Process for producing citric acid

Details Process for producing citric acid Process for producing citric acid

1985-02-01

1989-08-08

Gray, Bruce D.

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

Organic compounds

Carboxylic acids and salts thereof

562584, 435144, C07C 5142

Patent

active

048554944

ABSTRACT:
A process for producing citric acid or other suitable acids and/or their salts from fermentation solutions. The process comprises removing high molecular weight impurities by means of membrane filtration and/or addition adsorption on a nonionic adsorption resin and removing low molecular weight impurities by anion and cation exchange and/or precipitating a citric acid as a calcium salt.

REFERENCES:
patent: 2974178 (1961-03-01), Hwa et al.
Walch et al, Chemical Abstracts, vol. 85, No. 19043t, (1976).
Borak et al, Chemical Abstracts, vol. 84, No. 29190g (1976).
Kirk-Othmer "Encyclopedia of Chemical Technology", 3rd ed, vol. 6, pp. 16-159. 156-

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