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From a number of ion-exchange resins and adsorbents,a macro-pore weak-base type anionion-exchange resin,D354,was selected for the separation of lactic acid.Experimental data showedthat simultaneous ion-exchange and physical adsorption existed in the lactic acid-D354 system.Amathematical model was suggested to simulate the experimental data.Also,the effects of inorganicsalts on the ion-exchange.equilibrium were studied.The difference in ion-exchange equilibrium be-tween DL-and L-lactic acid was observed.
From a number of ion-exchange resins and adsorbents, a macro-pore weak-base type anionion-exchange resin, D354, was selected for the separation of lactic acid. Experimental data showed that simultaneous ion-exchange and physical adsorption existed in the lactic acid -D354 system. Mathematical model was suggested to simulate the experimental data. Also, the effects of inorganicsalts on the ion-exchange. Equilibrium was studied. The difference in ion-exchange equilibrium be-tween DL-and L-lactic acid was observed.