| abstract |
The present invention is a method for recovering carboxylic acid from a magnesium carboxylate-containing aqueous mixture comprising: Contacting the aqueous mixture with an acidic ion exchanger, thereby forming a carboxylic acid mixture and a magnesium ion-depleted ion exchanger; and the magnesium ion-depleted ion exchanger Contacting with the solution, thereby forming a magnesium chloride solution; and pyrolyzing the magnesium chloride solution at a temperature of at least 300 ° C., thereby forming magnesium oxide (MgO) and hydrogen chloride (HCl). Directed to the method. [Selection figure] None |