Membrane Porosity Calculator

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✖Liquid viscosity is defined as the measure of a fluid's resistance to flow or its internal friction when subjected to an external force.ⓘ Liquid Viscosity [μ]			+10% -10%
✖Flux through membrane is defined as the rate of movement or transfer of a substance across a porous barrier known as a membrane.ⓘ Flux through Membrane [J_w]			+10% -10%
✖Tortuosity is an intrinsic property of a porous material usually defined as the ratio of actual flow path length to the straight distance between the ends of the flow path.ⓘ Tortuosity [Τ]			+10% -10%
✖Membrane thickness is defined as the difference between the internal and outernal boundary of the membrane.ⓘ Membrane Thickness [l_m]			+10% -10%
✖Pore diameter is defined as the distance between two opposite walls of a pore.ⓘ Pore Diameter [d]			+10% -10%
✖Applied Pressure Driving Force is defined as the force or pressure that is intentionally exerted or applied to induce or facilitate process.ⓘ Applied Pressure Driving Force [ΔP]			+10% -10%

✖Membrane porosity is defined as the void volume fraction of a membrane. It is the volume of the pores divided by the total volume of the membrane.ⓘ Membrane Porosity [ε]

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Formula

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Membrane Porosity

Formula

`"ε" = (32*"μ"*"J"_{"w"}*"Τ"*"l"_{"m"})/("d"^2*"ΔP")`

Example

`"0.349998"=(32*"0.0009Kg/ms"*"0.0069444m³/(m²*s)"*"280"*"75μm")/(("10μm")^2*"120000Pa")`

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Membrane Porosity Solution

STEP 0: Pre-Calculation Summary

Formula Used

Membrane Porosity = (32*Liquid Viscosity*Flux through Membrane*Tortuosity*Membrane Thickness)/(Pore Diameter^2*Applied Pressure Driving Force)
ε = (32*μ*J_w*Τ*l_m)/(d^2*ΔP)
This formula uses 7 Variables

Variables Used

Membrane Porosity - Membrane porosity is defined as the void volume fraction of a membrane. It is the volume of the pores divided by the total volume of the membrane.
Liquid Viscosity - (Measured in Pascal Second) - Liquid viscosity is defined as the measure of a fluid's resistance to flow or its internal friction when subjected to an external force.
Flux through Membrane - (Measured in Cubic Meter per Square Meter per Second) - Flux through membrane is defined as the rate of movement or transfer of a substance across a porous barrier known as a membrane.
Tortuosity - Tortuosity is an intrinsic property of a porous material usually defined as the ratio of actual flow path length to the straight distance between the ends of the flow path.
Membrane Thickness - (Measured in Meter) - Membrane thickness is defined as the difference between the internal and outernal boundary of the membrane.
Pore Diameter - (Measured in Meter) - Pore diameter is defined as the distance between two opposite walls of a pore.
Applied Pressure Driving Force - (Measured in Pascal) - Applied Pressure Driving Force is defined as the force or pressure that is intentionally exerted or applied to induce or facilitate process.

STEP 1: Convert Input(s) to Base Unit

Liquid Viscosity: 0.0009 Kilogram per Meter per Second --> 0.0009 Pascal Second (Check conversion here)
Flux through Membrane: 0.0069444 Cubic Meter per Square Meter per Second --> 0.0069444 Cubic Meter per Square Meter per Second No Conversion Required
Tortuosity: 280 --> No Conversion Required
Membrane Thickness: 75 Micrometer --> 7.5E-05 Meter (Check conversion here)
Pore Diameter: 10 Micrometer --> 1E-05 Meter (Check conversion here)
Applied Pressure Driving Force: 120000 Pascal --> 120000 Pascal No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

ε = (32*μ*J_w*Τ*l_m)/(d^2*ΔP) --> (32*0.0009*0.0069444*280*7.5E-05)/(1E-05^2*120000)

Evaluating ... ...

ε = 0.34999776

STEP 3: Convert Result to Output's Unit

0.34999776 --> No Conversion Required

FINAL ANSWER

0.34999776 ≈ 0.349998 <-- Membrane Porosity

(Calculation completed in 00.004 seconds)

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Credits

Created by Harsh Kadam

Shri Guru Gobind Singhji Institute of Engineering and Technology (SGGS), Nanded

Harsh Kadam has created this Calculator and 25+ more calculators!

Verified by Prerana Bakli

National Institute of Technology (NIT), Meghalaya

Prerana Bakli has verified this Calculator and 1500+ more calculators!

< 3 Membrane Separation Calculators

Membrane Pore Diameter

Go Pore Diameter = ((32*Liquid Viscosity*Flux through Membrane*Tortuosity*Membrane Thickness)/(Membrane Porosity*Applied Pressure Driving Force))^0.5

Hagen Poiseuille Based Flux for Membrane Separation

Go Flux through Membrane = (Membrane Porosity*Pore Diameter^2*Applied Pressure Driving Force)/(32*Liquid Viscosity*Tortuosity*Membrane Thickness)

Membrane Porosity

Go Membrane Porosity = (32*Liquid Viscosity*Flux through Membrane*Tortuosity*Membrane Thickness)/(Pore Diameter^2*Applied Pressure Driving Force)

Membrane Porosity Formula

Membrane Porosity = (32*Liquid Viscosity*Flux through Membrane*Tortuosity*Membrane Thickness)/(Pore Diameter^2*Applied Pressure Driving Force)
ε = (32*μ*J_w*Τ*l_m)/(d^2*ΔP)

How can Membrane Porosity be measured?

Membrane porosity can be measured using a variety of methods, including:

Mercury porosimetry: This method uses mercury, which is a non-wetting liquid, to measure the pore size distribution of a membrane.
Gas permeation: This method uses gases of different molecular sizes to measure the pore size distribution of a membrane.
Electrical resistance tomography: This method uses electrical resistance measurements to map the pore space.
Nuclear magnetic resonance imaging (NMR): This method uses NMR signals to map the pore space.

How to Calculate Membrane Porosity?

Membrane Porosity calculator uses Membrane Porosity = (32*Liquid Viscosity*Flux through Membrane*Tortuosity*Membrane Thickness)/(Pore Diameter^2*Applied Pressure Driving Force) to calculate the Membrane Porosity, Membrane porosity is defined as the void volume fraction of the membrane.It is defined as the volume of the pores divided by the total volume of the membrane. Membrane Porosity is denoted by ε symbol.

How to calculate Membrane Porosity using this online calculator? To use this online calculator for Membrane Porosity, enter Liquid Viscosity (μ), Flux through Membrane (J_w), Tortuosity (Τ), Membrane Thickness (l_m), Pore Diameter (d) & Applied Pressure Driving Force (ΔP) and hit the calculate button. Here is how the Membrane Porosity calculation can be explained with given input values -> 0.349998 = (32*0.0009*0.0069444*280*7.5E-05)/(1E-05^2*120000).

FAQ

What is Membrane Porosity?

Membrane porosity is defined as the void volume fraction of the membrane.It is defined as the volume of the pores divided by the total volume of the membrane and is represented as ε = (32*μ*J_w*Τ*l_m)/(d^2*ΔP) or Membrane Porosity = (32*Liquid Viscosity*Flux through Membrane*Tortuosity*Membrane Thickness)/(Pore Diameter^2*Applied Pressure Driving Force). Liquid viscosity is defined as the measure of a fluid's resistance to flow or its internal friction when subjected to an external force, Flux through membrane is defined as the rate of movement or transfer of a substance across a porous barrier known as a membrane, Tortuosity is an intrinsic property of a porous material usually defined as the ratio of actual flow path length to the straight distance between the ends of the flow path, Membrane thickness is defined as the difference between the internal and outernal boundary of the membrane, Pore diameter is defined as the distance between two opposite walls of a pore & Applied Pressure Driving Force is defined as the force or pressure that is intentionally exerted or applied to induce or facilitate process.

How to calculate Membrane Porosity?

Membrane porosity is defined as the void volume fraction of the membrane.It is defined as the volume of the pores divided by the total volume of the membrane is calculated using Membrane Porosity = (32*Liquid Viscosity*Flux through Membrane*Tortuosity*Membrane Thickness)/(Pore Diameter^2*Applied Pressure Driving Force). To calculate Membrane Porosity, you need Liquid Viscosity (μ), Flux through Membrane (J_w), Tortuosity (Τ), Membrane Thickness (l_m), Pore Diameter (d) & Applied Pressure Driving Force (ΔP). With our tool, you need to enter the respective value for Liquid Viscosity, Flux through Membrane, Tortuosity, Membrane Thickness, Pore Diameter & Applied Pressure Driving Force and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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