Membrane distillation works on a principle of the vapor pressure gradient. Vapor pressure gradients are created by temperature differences across the hydrophobic membrane. In which, one side is facing the hot stream and another side of the membrane is facing the cold stream.
According to the second law of thermodynamics, heat transfer takes place across the membrane. This results in temperature polarization. Temperature polarization reduces the vapor pressure gradients and results in the decline in water flux in membrane distillation.
So, what are the ways by which we can eliminate or reduce the temperature polarization effect in membrane distillation?
Dear Asfak Patel I recommend checking out the link below
Article State-of-the-art methods for overcoming temperature polariza...
https://repository.kaust.edu.sa/bitstream/handle/10754/563878/TP+in+VMD+JMS+online+version+2014+-+Manuscript+Only.pdf?sequence=2
http://www.biblioteca.uma.es/bbldoc/articulos/16692226.pdf
Regards
Thank you, Prof. Khalid Turki Rashid, for recommending a research article.
Hi,
May these two articles help:
State-of-the-art methods for overcoming temperature polarization in membrane distillation process: A review
Temperature and concentration polarization in membrane distillation of aqueous salt solutions
Thank You, Dr. Hayder Ibrahim Mohammad for recommending a valuable article on temperature and concentration polarization.
Both the articles are very useful.
Hi Dr Asfak Patel . It can be reduced by making the temperature at the surface of the membrane in contact with the feed side to be almost equal to the temperature of the bulk feed solution.See the link: https://www.frontiersin.org/articles/421215
Also, see the following link: Article Overcoming the temperature polarization in membrane distilla...
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