Continuous purification of active pharmaceutical ingredients utilizing polymer membrane surface wettability

Area of Science:

• Chemical Engineering
• Materials Science
• Pharmaceutical Technology

Background:

• Continuous manufacturing offers advantages over batch processing in pharmaceutical production.
• Efficient separation techniques are crucial for in-line processing of active pharmaceutical ingredients (APIs).
• Polymer membranes with tailored wettability present a promising approach for continuous separation.

Purpose of the Study:

• To demonstrate the dual use of hydrophobic and hydrophilic polymer membranes for in-line liquid-liquid extraction.
• To investigate the critical role of membrane wettability in phase separation during API synthesis.
• To validate the application of this continuous separation method for four essential APIs.

Main Methods:

• Utilizing both hydrophobic and hydrophilic polymer membranes in a continuous flow system.
• Implementing in-line liquid-liquid extraction during the synthesis of four distinct APIs.
• Employing a secondary membrane with opposing wetting characteristics for effective phase separation.

Main Results:

• Successful in-line liquid-liquid extraction was achieved using the dual-membrane system.
• The selective wettability of the membranes enabled efficient separation of aqueous and organic phases.
• The secondary membrane with opposite wetting properties was critical for complete phase separation.

Conclusions:

• Continuous processing of pharmaceuticals can be enhanced by membrane-based liquid-liquid extraction.
• The dual-membrane system offers a robust method for in-line separation in API synthesis.
• Tailoring membrane wettability is key to achieving efficient phase separation in continuous pharmaceutical manufacturing.