PROCESS FOR ISOLATING HYDROXYMONOCARBOXYLIC AND TRICARBOXYLIC ACIDS

The invention relates to the removal of hydroxymonocarboxylic acids and tricarboxylic acids, e.g. citric acid and lactic acid, from aqueous solutions, e.g. obtained from fermentation processes, by adsorption on zeolites with a modulus of up to 400. Suitable zeolites are of the dealuminised Y type (D...

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Bibliographische Detailangaben
Hauptverfasser:	SEXTL, ELFRIEDE, KINZ, HEIKE, SCHAFER-TREFFENFELDT, WILTRUD, YONSEL, SEMS, STOCKHAMMER, STEFAN, KISS, AKOS
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING
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Beschreibung
Zusammenfassung:	The invention relates to the removal of hydroxymonocarboxylic acids and tricarboxylic acids, e.g. citric acid and lactic acid, from aqueous solutions, e.g. obtained from fermentation processes, by adsorption on zeolites with a modulus of up to 400. Suitable zeolites are of the dealuminised Y type (DAY), ZSM-5 type and mordenite type.