Development of Asymmetric Low Pressure Reverse Osmosis-Surfactants Membrane: Effect of Surfactant Types and Concentration

  • Nor Azirah Sulaiman East Coast Environmental Research Institute, Sultan Zainal Abidin University, 21300 Kuala Nerus, Terengganu, Malaysia
  • Abdul Rahman Hassan Faculty of Innovative Design and Technology, Sultan Zainal Abidin University, 21300 Kuala Nerus, Terengganu, Malaysia; East Coast Environmental Research Institute, Sultan Zainal Abidin University, 21300 Kuala Nerus, Terengganu, Malaysia
  • Sabariah Rozali East Coast Environmental Research Institute, Sultan Zainal Abidin University, 21300 Kuala Nerus, Terengganu, Malaysia
  • Nurul Hannan Mohd Safari East Coast Environmental Research Institute, Sultan Zainal Abidin University, 21300 Kuala Nerus, Terengganu, Malaysia
  • Che Wan Insyirah Che Wan Takwa East Coast Environmental Research Institute, Sultan Zainal Abidin University, 21300 Kuala Nerus, Terengganu, Malaysia
  • Al Dabbaas Khuzama Mansoor A East Coast Environmental Research Institute, Sultan Zainal Abidin University, 21300 Kuala Nerus, Terengganu, Malaysia
  • Muhammad Hafiz Md Saad East Coast Environmental Research Institute, Sultan Zainal Abidin University, 21300 Kuala Nerus, Terengganu, Malaysia

Abstract

The effect of surfactants that are cationic (Cetyl trimethylammonium bromide (CTAB)), anionic (Sodium Dodecyl Sulphate (SDS)) and non-ionic (Triton X-100) on performance, morphologies and molecular orientation of Polysulfone (PSF) low pressure reverse osmosis (LPRO) membrane were addressed. The experimental data showed that the increasing of 0.5 wt% in surfactant concentration produced higher pure water permeation (PWP) and flux. At 2.5 wt% of SDS, the LPRO membranes achieved the highest PWP of about 64.42 L/m2h while 3.0 wt% of CTAB demonstrated the highest flux of 55.28 L/m2h. Analysis from morphological results found that the optimal performance at 89.6 % rejection was produced by the membrane with 2 wt% SDS which is a good promoter for the fine morphological structures of the membrane, thus producing fine spectrum of molecular orientation factor.

Keywords: reverse osmosis, surfactant, morphology, molecular orientation, desalination
Published online
2019-05-21
How to Cite
Sulaiman, N. A., Hassan, A. R., Rozali, S., Mohd Safari, N. H., Takwa, C. W. I. C. W., Mansoor A, A. D. K. and Md Saad, M. H. ā€œDevelopment of Asymmetric Low Pressure Reverse Osmosis-Surfactants Membrane: Effect of Surfactant Types and Concentrationā€, Periodica Polytechnica Chemical Engineering. doi: https://doi.org/10.3311/PPch.13327.
Section
Articles