Performance Investigation of O-Ring Vacuum Membrane Distillation Module for Water Desalination

Table 6

Comparison of the PVDF and PTFE membranes at 65°C, 110.2 (L/h), and 97 kPa for 35 g/L.

Membrane	Permeate flux (kg/m^2 h)	Permeate concentration (mg/L)	Permeate conductivity (μS/cm)	% of rejection
PVDF	43.8	175	8.1	99.5
PTFE	52.6	280	10.2	99.2