Abstract

Solutes of different size in a mixture solution were separated on-line, using a semi-continuous reciprocating size exclusion chromatography. The band of fast-moving large molecules was isolated during the first half cycle, while the band of slow-moving small molecules was isolated during the second half cycle. After 7 cycles of frontal mode operation, 89% of the Blue Dextran in the feed was isolated as a pure solution. Vitamin B12 of constant concentration was also isolated as a pure solution.

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