Development of quaternary system pes polymeric hybrid membranes with blending method: study on the effect of powdered activated carbon and nanosilica

Ho, Ransom Wan Jie (2023) Development of quaternary system pes polymeric hybrid membranes with blending method: study on the effect of powdered activated carbon and nanosilica. Final Year Project, UTAR.

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Abstract

Membrane technology has found extensive use in wastewater treatment due to its outstanding ability in pollutant separation. In this study, surface modification is carried out by undergoes blending method to enhance the performance of the membrane. A study was conducted by blending polyethersulfone (PES) as polymer, N-methyl pyrrolidone (NMP) as solvent, nanosilica and powdered activated carbon (PAC) as additives to produce Quaternary System PES polymeric hybrid membranes. The Fourier transform infrared spectroscopy (FTIR) test will be carried out to analyse the functional group of nanosilica and PAC. Several tests are conducted to analyse the performance of the membrane that has been produced. The cross section of the produced membrane will be analyzed using Scanning Electron Microscopy (SEM). Pure water flux and solute rejection flux and membrane fouling performance of the produced membrane will be evaluated. Turbidity, color and chemical oxygen demand (COD) removal efficiency of domestic wastewater will also be tested with the quaternary system PES polymeric hybrid membranes. Among different weight percentage (wt.%) of additives blended in the membranes, the result shows that 2.5 wt.% nanosilica and 2.5 wt.% PAC membrane has the highest pure water flux which range from 133.863 L/m2 h - 372.598 L/m2 h while 0 wt.% nanosilica and 0 wt.% PAC membrane has the lowest pure water flux which range from 1.574 L/m2 h - 4.738 L/m2 h. 2.5 wt.% nanosilica and 2.5 wt.% PAC membrane also shows the highest volume of permeate with the shortest fouling time compared to other membranes. However, the highest treatment efficiencies were obtained by 1.5 wt.% nanosilica and 3.5 wt.% PAC viii membrane for turbidity, color and COD removal which are 100%, 97.53% and 94.31% respectively.

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