Fermentation and purification process for succinic acid

Details Fermentation and purification process for succinic acid Fermentation and purification process for succinic acid

C - Chemistry, Metallurgy

12

P

195/131, 260/533

C12P 7/46 (2006.01)

Patent

CA 1338905

A process for economically producing highly purified succinic acid comprises growing a succinate-producing microorganism on a low cost carbohydrate substrate; simultaneously neutralizing the fermentation broth and precipitating the succinate as calcium succinate by adding a calcium ion source to form calcium succinate; isolating the calcium succinate; slurrying the calcium succinate in water and treating it with sulfuric acid to form calcium sulfate and succinic acid; and then treating the succinic acid with first a strongly acidic ion exchanger and then a weakly basic ion exchanger to remove impurities and obtain a highly purified succinic acid product.

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