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AssigneesRoquette Freres, Dsm IP Assets B.V.
InventorsMaarten Job Van De Graaf, Fredoen Vallianpoer, Guillaume Fiey, Loic Delattre, Elisabeth Agnes Michèle Schulten
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The present invention relates to a process for recovering succinic acid in crystal form from a fermentation broth comprising succinic acid, comprising the steps of a) bringing the fermentation broth to a pH of between 1 and 4, b) crystallizing the succinic acid from the fermentation broth to form succinic acid crystals, c) dissolving the succinic acid crystals at a temperature of between 30 and 90 degrees Celsius to form an aqueous solution comprising dissolved succinic acid, d) crystallizing the succinic acid from the solution to recover succinic acid in crystal form. The invention further relates to succinic acid in crystal form, comprising a sugar content of 1 to 100 ppm and a nitrogen content of 1 to 80 ppm.
A process for recovering succinic acid in crystal form from a fermentation broth comprising succinic acid, comprising:
Succinic acid in crystal form, comprising a sugar content of 1 to 100 ppm and a nitrogen content of 1 to 80 ppm.
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