RECOVERY OF CARBOXYLIC ACID FROM THEIR MAGNESIUM SALTS BY PRECIPITATION USING HYDROCHLORIC ACID, USEFUL FOR FERMENTATION BROTH WORK-UP

RECOVERY OF CARBOXYLIC ACID FROM THEIR MAGNESIUM SALTS BY PRECIPITATION USING HYDROCHLORIC ACID, USEFUL FOR FERMENTATION BROTH WORK-UP

The invention provides a method for preparing a carboxylic acid, which method comprises the steps of- providing magnesium carboxylate, wherein the carboxylic acid corresponding with the carboxylate has a solubility in water at 20 °C of 80 g/100 g water or less;- acidifying the magnesium carboxylate...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: De Haan, André Banier, Jansen, Peter Paul, Van der Weide, Paulus Loduvicus Johannes, Van Breugel, Jan, Cerdà Baró, Agustín, Vidal Lancis, José Maria
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
COMPOUNDS THEREOF
HETEROCYCLIC COMPOUNDS
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:The invention provides a method for preparing a carboxylic acid, which method comprises the steps of- providing magnesium carboxylate, wherein the carboxylic acid corresponding with the carboxylate has a solubility in water at 20 °C of 80 g/100 g water or less;- acidifying the magnesium carboxylate with HCl, thereby obtaining a solution comprising carboxylic acid and magnesium chloride (MgCl2);- optionally a concentration step, wherein the solution comprising carboxylic acid and MgCl2 is concentrated;- precipitating the carboxylic acid from the solution comprising the carboxylic acid and MgCl2, thereby obtaining a carboxylic acid precipitate and a MgCl2 solution.The inventors found that the addition of HCl to a magnesium salt of the carboxylic acid and subsequent precipitation of the carboxylic acid from the solution leads to a very efficient separation of the carboxylic acid from a magnesium carboxylate solution.