Permeate flowPermeate flow is the v

Permeate flowPermeate flow is the volume of permeate per unit of membrane area and unit time (12). Figure 1 presents the results of the experiment in relation to the permeate flow. Figure 1 shows that the permeate flow increases with time, a similar result to that found by McCormick et al. (26) in a study on ethanol removal from a solution through reverse osmosis, a behaviour that occurs owing to the decrease in ethanol concentration in the concentrate, preventing the blockage of the membrane pores, since the same volume of permeate removed is added to the feeding tank, therefore keeping it constant.