3.3.1 Effect of Gas Flow Rate on Bubble Size
Figure 10 shows the effect of gas flow rate ond av. Higher gas flow rates contribute to larger
bubble sizes with dav mainly in the 100 - 300 μm
range (Figure S3). With the increase of gas flow rate, the quantity of
bubbles gradually increases, and d av also
increases. The increase of quantity of bubbles raises the collision
frequency of bubbles. Thus, the coalescence of bubbles makesd av increase, and the corresponding quantity of
bubbles declines. In terms of gas flow rate is 10 ml/min, the largest
quantity of bubbles (~500) is observed.
Figure 10 Effects of gas flow rate on bubble sizes
(d av) and quantity at
a liquid flow rate of 1.0 ml/min with
10 cm ceramic membrane