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 wi...
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Main Authors | , , , , , |
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Format | Patent |
Language | English |
Published |
15.12.2020
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Online Access | Get full text |
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Summary: | 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 (MgCh); optionally a concentration step, wherein the solution comprising carboxylic acid and MgCb is concentrated; precipitating the carboxylic acid from the solution comprising the carboxylic acid and MgCb, thereby obtaining a carboxylic acid precipitate and a MgClz 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. |
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Bibliography: | Application Number: MY2014PI00329 |