Reverse Osmosis Membrane Design Calculator

Water Filtration Treatment and Purification

Solving for contaminant rejection.

contanimant rejection

R = universal gas constant = 0.082 atm-liter/gmol-kelvin


influent feed concentration (Cin)
effluent permeate concentration (Cout)


influent feed concentration (Cin)
= 0
= 0
effluent permeate concentration (Cout)
= 0
= 0


contaminant rejection (R)

Other Units:

Change Equation
Select to solve for a different unknown
van't Hoff equation
osmotic pressure
osmotic pressure osmotic pressure
osmotic pressure coefficientosmotic pressure coefficient
number of ions per moleculenumber of ions per molecule

membrane contaminant rejection
contaminant rejection contaminant rejection
influent feed concentrationinfluent feed concentration
effluent permeate concentrationeffluent permeate concentration

Reference - Books:

1) P. Aarne Vesilind, J. Jeffrey Peirce and Ruth F. Weiner. 1994. Environmental Engineering. Butterworth Heinemann. 3rd ed.
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