Finding a One-Way Membrane Solution

[strokebow]

Hi guys,

I am in need of a 'one-sided' membrane.

Basically, something like a bad damp proofing membrane. Allow me to explain:

A membrane which will allow water to pass through one-way (at a fast rate - this is where it differs from the damp proof membrane you can buy in the diy shop). But not allow water to pass back through the other side.

Any ideas? Info? Advice?

cheers!

 

[lisab]

Do you mean liquid water? Gore-Tex allows water vapor through one-way.

http://en.wikipedia.org/wiki/Gore-Tex

 

[strokebow]

thanks for your reply lisab.

However, I am thinking more of a water flow. Gore-Tex and products like it will let vapours pass back through but I want a bulk flow.

Any ideas?

 

[S_Happens]

Does it have to be a membrane? There are many types/sizes of check valve that only allow flow in one direction.

 

[LudusRex]

I would first suggest looking into semipermeable membranes, also known as selective membranes, which allow certain substances to pass through while blocking others. These types of membranes are commonly used in industries such as water purification and pharmaceuticals.

In your case, a semipermeable membrane with a high water permeability would be ideal for allowing water to pass through one-way at a fast rate, while still preventing water from passing back through the other side. This could be achieved by choosing a membrane material with specific pore size and surface properties that allow for rapid water flow in one direction, but hinder it in the opposite direction.

Another option to consider is using a reverse osmosis membrane, which is designed to only allow water molecules to pass through while blocking other substances. These membranes are commonly used in water filtration systems and have a high water permeability rate.

It's also important to consider the properties of the water you are trying to filter, as well as any potential contaminants that may be present. This can help guide your selection of a suitable membrane material.

I would also recommend consulting with a specialist or conducting further research to determine the best membrane solution for your specific needs. Good luck with your project!