. "Appendix B: Mass and Energy Balance on Reverse Osmosis System." Desalination: A National Perspective. Washington, DC: The National Academies Press, 2008.
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Desalination: A National Perspective
Assuming that the membrane permeability can be doubled without sacrificing salt rejection, the average driving pressure for the new membrane can be reduced by 50 percent (shown above).
Substituting these values into the equation above,
results in an energy ratio of new to baseline of 0.85. This translates into a net reduction of energy equal to 15 percent from today’s baseline.
