(a) (b)
Figure 5. Simulation investigation of the effect of the pore
size of membrane on (a) permeate flux and (b) permeate concentration
with membrane porosity of 0.8. Substrate concentration: 50 g/L, enzyme
concentration: 0.05 g/L, operating pressure: 3 bar, agitation speed:
1000 rpm, and feeding mode: water feeding.