Fabrication of PES/PVP Water Filtration Membranes Using Cyrene®, a Safer Bio-Based Polar Aprotic Solvent

Figure 4

A schematic diagram of the frontal filtration equipment. (1) Nitrogen cylinder, (2) valve, (3) pressure sensor, (4) water bath, (5) membrane cell, (6) magnetic stirrer, (7) electronic balance, and (8) PC.