Effect of bubble size and frequency on the permeate flux of gas spared ultrafiltration with tubular membranes

摘要

Gas sparged ultrafiltration experiments are performed using a tubular membrane module with solutions of dextran and human serum albumin (HAS) as the test media. Air is injected, in a controlled manner with the ability to adjust bubble size and frequency independently, into the membrane module to create a gas-liquid two-phase crossflow operation. The effects of bubble size and frequency on the permeate flux of the spared ultrafiltration are studied experimentally. It is found that the permeate flux increases with the bubbling frequency in the examined range.