Variable‐volume hollow‐fiber enzyme reactor with pulsatile flow

Hollow‐fiber device has been used to investigate the effect of ultrafiltration swing on the performance of membrane‐enzyme reactor. Experiments with β‐galactosidase and ONPG have shown that bidirectional ultrafiltration induced by pulsatile flow gives rise to an increase in conversion relative to that obtained at steady operation without ultrafiltration swing. This increase apparently comes from the enhanced mass transfer due to ultrafiltration.