Mark Perry
Chief Operating Officer at Aquaporin Asia
Creator and site facilitator of ForwardOsmosisTech.
Passionate about forward osmosis technologies and their commercial applications & adaptations.
Passionate about forward osmosis technologies and their commercial applications & adaptations.
Latest posts by Mark Perry (see all)
- New FO pilot project between Darco and Aquaporin aims to treat wastewater from semi-conductor industries - July 13, 2017
- According to Osmosis Energy UK, Pressure Retarded Osmosis using hollow fibers is now a viable means of energy production - July 6, 2017
- S-parameter calculations yield negative values – what to do? - April 12, 2017
The structural parameter (S-value) of a forward osmosis membrane determines how severely the membrane is affected by concentration polarization
This makes the S-value one of the 3 most important FO membrane performance parameters besides the pure water membrane permeability coefficient (A) and the salt permeability coefficient (B).
ForwardOsmosisTech recently published an easy-to-use calculator for estimating FO membrane S-values. We hope you find it of use to your work.
As always, feel free to drop us a line at forwardosmosistechportal@gmail.com with any feedback or comments to our work.
A question from Mohammed related to determining the S-value of forward osmosis membranes:
Thank you so much for your website http://www.forwardosmosistech.com/.
Well, I am a PhD student and my research is focusing in the usage of FO for oil industry.
A quick question if you don’t mind please; Do you think S value should be used as a fixed and constant value even when the draw solution and flow rate (assume shell flowrate) are changing? I mean should we calculate S value for each draw solution at each respective flowrate??