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Drinking Water Engineering and Science An interactive open-access journal
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https://doi.org/10.5194/dwes-2020-33
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/dwes-2020-33
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

  15 Oct 2020

15 Oct 2020

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This preprint is currently under review for the journal DWES.

Evaluation of Thin Film Composite Forward Osmosis Membranes: Effect of Polyamide Preparation Conditions

Aya Mohammed Kadhom1, Mustafa Huseein Al-Furaiji2, and Zaidun Naji Abudi1 Aya Mohammed Kadhom et al.
  • 1Environmental Engineering Department, College of Engineering, Mustansiriyah University, Iraq
  • 2Environment and Water Directorate, Ministry of Science and Technology, Baghdad, Iraq

Abstract. The forward osmosis (FO) process has been considered for desalination as a competitor option to the traditional reverse osmosis process. Interfacial polymerization (IP) reaction between two monomers (i.e., m-phenylene diamine (MPD) and 1, 3, 5-benzenetricarbonyl chloride (TMC)) is typically used to prepare the selective polyamide layer that prevents salts and allows water molecules to pass. In this research, we investigated the effect of preparation conditions (MPD contact time, TMC reaction time, and addition of an amine salt) on the FO performance in terms of water flux and salt flux. The results showed that increasing MPD contact time resulted in a significant increase in the water flux and salt flux. However, increasing TMC reaction time caused a decline in both the water flux and the salt flux. The optimum condition that gave the highest water flux was found to be as 5 min for MPD and 1 min for TMC. The addition of an amine salt of camphorsulfonic acid-triethylamine (CSA-TEA) was able to make an apparent effect on the FO process by increasing water flux.

Aya Mohammed Kadhom et al.

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Aya Mohammed Kadhom et al.

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Short summary
In this research, we investigated the effect of preparation conditions (MPD contact time, TMC reaction time, and addition of an amine salt) on the FO performance in terms of water flux and salt flux. The results showed that increasing MPD contact time resulted in a significant increase in the water flux and salt flux. However, increasing TMC reaction time caused a decline in both the water flux and the salt flux.
In this research, we investigated the effect of preparation conditions (MPD contact time, TMC...
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