Counter-current chromatography separation scaled up from an analytical column to a production column

Area of Science:

• Analytical Chemistry
• Separation Science
• Chemical Engineering

Background:

• Counter-current chromatography (CCC) is a liquid-liquid separation technique.
• Scaling up analytical separation methods to production levels presents significant challenges.
• Optimizing throughput while maintaining separation quality is crucial for industrial applications.

Purpose of the Study:

• To demonstrate the scalability of J-type counter-current chromatography (CCC).
• To compare the performance of analytical and production scale CCC separations.
• To validate the scale-up theory for CCC.

Main Methods:

• Analytical scale separation performed on a 5.4 ml J-type CCC instrument at 1 ml/min.
• Production scale separation utilized two 2300 ml columns in series at 850 ml/min on a J-type centrifuge.
• Separation resolution and time were key performance indicators.

Main Results:

• Analytical separation achieved a resolution of 0.69 in 10 minutes.
• Production scale separation yielded a resolution of 0.71 in 10 minutes.
• An 850-fold increase in productivity was demonstrated with the scaled-up method.

Conclusions:

• J-type CCC is highly scalable from analytical to production volumes.
• Scale-up maintains or improves separation resolution while drastically increasing productivity.
• The presented scale-up theory supports the successful transition of CCC methods to industrial production.