Abstract

This research purpose to determine the material composition in the manufacture of polysulfone membranes by producing the best performance in the filtration application process. Polysulfone has good thermal and chemical stability properties that make it a candidate material in membrane manufacturing, but the hydrophobicity properties of polysulfone result in less than optimal membrane performance, so a blending process is needed to reduce hydrophobicity by maintaining the advantages of the membrane. The membrane was prepared using phase inversion with composite doping through the TEOS in situ hydrolysis method. The results of XRD identification showed that the diffraction pattern was successfully coated with silica with the amorphous phase, while the FTIR contained Si-O-Si bonds with a wave number of 1054 cm-1. The SEM surface morphology showed that the presence of silica and GO made the pore size larger with the pore size on the membrane 1,92 μm. The results of the contact angle test on the GO-SiO2/PSF variation of 0,8 obtained the lowest hydrophobicity value of 70,17°. The addition of composites will result in a larger pore size supported by the value of the contact angle, proving that the combination of the composite in polysulfone can increase the hydrophilicity of the membrane.

Highlights

  • The provision of clean water is becoming an increasingly important issue in line with population growth, especially in coastal areas

  • The scarcity of clean water sources is due to the fact that nearly 97,5% of the water on earth is water with a salt content found in the ocean and the remaining 2,5% is fresh water in the areas of rivers, icebergs, land and lakes which cover most of the needs of living things [1]

  • The prominent and common peaks appearing around 21,81° in GO-SiO2 and GO composites are associated with the (002) crystal field of graphene oxide [17], [18]

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Summary

Introduction

The provision of clean water is becoming an increasingly important issue in line with population growth, especially in coastal areas. This problem is very significant where clean water sources are increasingly scarce. The scarcity of clean water sources is due to the fact that nearly 97,5% of the water on earth is water with a salt content found in the ocean and the remaining 2,5% is fresh water in the areas of rivers, icebergs, land and lakes which cover most of the needs of living things [1]. Membranes are an important part of the desalination process which makes it possible to remove dissolved species such as salts, organic compounds, colloidal solids, suspension solids, bacteria, and viruses that cannot be removed by other technologies [3], [4]. Polysulfone is a polymer that can form asymmetric membranes and is widely used as a basis for making membranes for commercial

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