Process Engineering Reference Sheets by MyEngineeringTools.com
THE CALCULATORS

Concentration Polarization Flux Limit (Film Theory)

Calculates the maximum sustainable permeate flux (limiting flux) for membrane processes using film theory based on mass-transfer coefficients and concentration gradients.

📖 Need the theory? Read the methodology, assumptions, and equations in the full reference guide.
Read Concentration Polarization Flux Limit (Film Theory) Guide →

1. Define Input Parameters

2. Engineering Output

Concentration Ratio (Cr)
- ratio
Limiting Permeate Flux (Jmax_lmh)
- L/m²·h

Need this calculation offline?

Download Offline Excel Calculation

Context & Assumptions

Concentration polarization is the accumulation of rejected solutes at the membrane surface, creating a boundary layer that opposes solvent flow. This model uses film theory to estimate the maximum throughput (limiting flux) based on the mass-transfer coefficient and the concentration gradient between the bulk fluid and the membrane wall.

Understand the Engineering Principles

Review the step-by-step derivations, typical industrial limits, and scale-up rules.

Looking for more tools?

Explore our full library of interactive Process Engineering calculators.

View the Calculator Index