Forward Osmosis (FO) Membrane Process: How Does it Work?

In this video, we demonstrate how to conduct a simple forward osmosis (FO) process using flat sheet membrane in laboratory. A synthetic waste is prepared and used as feed for the FO process. In order to create osmotic pressure difference between two solutions, a salty solution with higher concentration is prepared and used as draw solution. Water will flow from feed (low concentration) to draw solution (high concentration) through semi-permeable membrane.

[@shubhamketansharma2314]

Hello, very interesting video. I am just wondering that the feed solution looks more conductive than the draw solution, so how the water is drawing from feed to draw.

[@morethanpurity1770]

@shubhamketansharma2314 .Thank you for your interest. Actually, the feed solution is significantly less conductive than the draw solution. The highly saline draw solution creates the osmotic pressure difference which induces water to flow from the feed solution through the membrane. If the osmotic pressure of feed is higher than the draw solution, feed is not able to be drawn to draw side.

[@hafsabano6390]

Can you please tell me how you calculate the reverse solute flux with its initial and final concentration values