2005Ion Exchange and AdsorptionRequires access

SEPARATION OF PYRUVIC ACID FROM LACTIC ACIDIN THE TRANSFORMED MIXTURE BY ION-EXCHANGE

Xu Ping

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Abstract

The SD-4 resin was selected out of 13 types of resins to separate pyruvic acid from lactic acid. And the highest break-through capacity of ion-exchange, 2.08 mmol/g wet resin, was obtained at pH1.85 and the flow rate of 1.5 BV/h. Lactic acid was completely desorbed when washed with deionized water. Then 2.0 mol/L HCl brought an efficient reverse elution at a flow rate of 1.0 BV/h. Under these conditions a final yield of 85% was achieved.

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What this paper is about

The SD-4 resin was selected out of 13 types of resins to separate pyruvic acid from lactic acid. And the highest break-through capacity of ion-exchange, 2.08 mmol/g wet resin, was obtained at pH1.85 and the flow rate of 1.5 BV/h. Lactic acid was completely desorbed when washed with deionized water. Then 2.0 mol/L HCl brought an efficient reverse elution at a flow rate of 1.0 BV/h. Under these conditions a final yield of 85% was achieved.

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Available abstract

The SD-4 resin was selected out of 13 types of resins to separate pyruvic acid from lactic acid. And the highest break-through capacity of ion-exchange, 2.08 mmol/g wet resin, was obtained at pH1.85 and the flow rate of 1.5 BV/h. Lactic acid was completely desorbed when washed with deionized water. Then 2.0 mol/L HCl brought an efficient reverse elution at a flow rate of 1.0 BV/h. Under these conditions a final yield of 85% was achieved.

Key concepts: Chemistry, Lactic acid, Pyruvic acid, Ion-exchange resin, Chromatography, Yield (engineering), Elution, Ion exchange

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