(a) (b)
Figure 6. Simulation investigation of the effect of membrane
porosity on (a) permeate flux and (b) permeate concentration with
membrane pore size of 10 nm. Substrate concentration: 50 g/L, enzyme
concentration: 0.05 g/L, operating pressure: 3 bar, agitation speed:
1000 rpm, and feeding mode: water feeding.