Abdeljalil Chougradi

11 Questions 5 Answers 0 Followers

Questions related from Abdeljalil Chougradi

Can we consider SEM (Scaning Electron Microscope) technique as a useful one to visualise fouling layers on reverse osmosis membranes ?

I'm trying to visualise fouling layers (biofouling, organic, inorganic and colloidal) on reverse osmosis membranes. Do you think SEM technique is a practical one? are there better...

11 November 2019 6,696 4 View

Can I patent a model used for chemical process based on previous models but with major modifications ?

Is it possible to patent a mathematical (with algorithm ) model used for variables calculation of a chemical process, knowing that there are different models patented for the same chemical process...

06 November 2019 2,841 8 View

What are the best practical techniques to monitor fouling in reverse osmosis desalination membranes ?

I need to monitor all kinds of fouling (colloidal, organic, scaling, biofouling) on the reverse osmosis membrane in the desalination process. what are the practical (easy and reliable) techniques...

06 November 2019 3,194 3 View

What is the effect of cyclic feed concentration on reverse osmosis fouling ?

I'm looking for documentation and papers describing the effect of cyclic feed concentration on membrane fouling. by cyclic concentration, I mean a feed which has a non-constant concentration and...

03 November 2019 7,721 1 View

How to validate a athmatical model in reverse osmosis process ?

i worked on a model to describe a desalination reverse osmosis process. I have all the equations needed and the model is ready. the model depends on five parameters. how many experiments do I need...

28 June 2019 291 3 View

What are the typical values for Mass transfer k in concentration polarization in reverse osmosis Desalination ?

I'm looking for the typical values for Mass transfer k used in the calculation of concentration in membrane wall (cases of spiral wound and flat membranes)

29 April 2019 2,666 3 View

Where can I find the precise values of water and salt permeabilities of DOW RO membranes as a function of feed salinity ?

I need the exact value of water and salt permeabilities of DOW RO membranes for my project. Thank you.

31 March 2019 1,145 0 View

What are the values of water and salt permeabilities in common reverse osmosis membrane for desalination (filmtec membranes for instance) ?

What are the values of water and salt permeabilities in common reverse osmosis membrane for desalination ? (filmtec membranes for instance) I need precise values as much as possible. Thank you.

19 January 2019 5,673 3 View

What is the most used type of commercial membranes in reverse osmosis desalination ?

what is the most used type of commercial membranes in reverse osmosis desalination ? and where can I find data about these membranes (solvent and solute permeability, pH range, max pressure, etc...)

06 January 2019 5,193 5 View

I'm thinking about working on reverse osmosis modelling for my PhD thesis, can you give me any leads or suggestions?

Reverse osmosis modelling

27 December 2017 3,651 1 View

Hi everyone, I'm an engineer looking for a topic to start my thesis in the field of wastewater treatment modelling, can you give me any suggestions ?

Topic for a PhD thesis in the field of wastewater treatment modelling.

21 December 2017 6,041 6 View