Forward Osmosis Water Flux Calculator
Calculates the ideal water flux for a forward osmosis membrane separation process based on feed and draw solution concentrations, temperature, and membrane characteristics.
📖 Need the theory? Read the methodology, assumptions, and equations in the full reference guide.
1. Define Input Parameters
2. Engineering Output
Absolute temperature (T)
- K
- K
Feed molar concentration (C_feed_molar)
- mol/L
- mol/L
Draw molar concentration (C_draw_molar)
- mol/L
- mol/L
Feed osmotic pressure (pi_feed)
- bar
- bar
Draw osmotic pressure (pi_draw)
- bar
- bar
Osmotic pressure difference (Delta_pi)
- bar
- bar
Net driving pressure (Delta_P_net)
- bar
- bar
Ideal water flux (J_w)
- L/m²·h
- L/m²·h
Need this calculation offline?
Download Offline Excel CalculationContext & Assumptions
Forward osmosis is an energy-efficient membrane separation technology driven by natural osmotic gradients rather than hydraulic pressure. It is especially useful for concentrating heat-sensitive solutions such as fruit juices while preserving flavor profiles and nutritional value.
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The results provided by this tool are for educational and preliminary estimation purposes only.
NO WARRANTY: MyEngineeringTools.com makes no warranties, express or implied, regarding the accuracy or applicability of these results to any specific engineering project.
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All results MUST be independently verified by a qualified professional engineer before implementation in any industrial or physical environment.