Moving adsorption belt system for continuous bioproduct recovery utilizing composite fibrous adsorbents

Authors

Guo Y., Kangwa M., Ali W., Mayer-Gall T., Gutmann J.S., Zenneck C., Winter M., Jungbauer A., Fernandez Lahore H.M.

Reference

Frontiers in Bioengineering and Biotechnology, vol. 11, art. no. 1135447, 2023

Description

A continuous protein recovery and purification system based on the true moving bed concept is presented. A novel adsorbent material, in the form of an elastic and robust woven fabric, served as a moving belt following the general designs observed in known belt conveyors. The composite fibrous material that forms the said woven fabric showed high protein binding capacity, reaching a static binding capacity equal to 107.3 mg/g, as determined via isotherm experiments. Moreover, testing the same cation exchange fibrous material in a packed bed format resulted in excellent dynamic binding capacity values (54.5 mg/g) even when operating at high flow rates (480 cm/h). In a subsequent step, a benchtop prototype was designed, constructed, and tested. Results indicated that the moving belt system could recover a model protein (hen egg white lysozyme) with a productivity up to 0.5 mg/cm2/h. Likewise, a monoclonal antibody was directly recovered from unclarified CHO_K1 cell line culture with high purity, as judged by SDS-PAGE, high purification factor (5.8), and in a single step, confirming the suitability and selectivity of the purification procedure.

Link

doi:10.3389/fbioe.2023.1135447