Suppose that one wishes to use reverse osmosis to reduce the salt content of brackish water containing 0.22 M total salt concentration to a value of 0.01 M, thus rendering it usable for human consumption. What is the minimum pressure that needs to be applied in the permeators (Figure 18.19) to achieve this goal, assuming that the operation occurs at 298 K?
In Figure 18.19

Transcribed Image Text:

Permeator Hollow fibers of Seawater pumped semipermeable through at high membrane pressure Pure water to collector Fiber Water moleculesSolute particles pushed into hollow fibers cannot enter hollow fibers