Table 1.

Structural parameters of the polypropylene (PP) and polytetrafluoroethylene (PTFE) hollow fiber membranes.

Parameter, Unit	PP	PTFE
Pore diameter (µm)	0.1–0.3	0.2–0.3
Membrane thickness (µm)	45	600
Outer diameter (mm)	0.4	2.2
Surface area (m2)	0.64	0.15
Porosity	Not available	0.53