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Juxtaposition of polyethersulfone (pes) composite membrane Performance and antifouling capability

Juxtaposition of polyethersulfone (pes) composite membrane Performance and antifouling capability / Liau Xin Jie
Rawatan air sisa berminyak telah menjadi cabaran di seluruh dunia sejak banyak air sisa berminyak yang dihasilkan setiap hari oleh proses perindustrian dan penggunaan kehidupan seharian. Oleh itu, teknologi membran adalah salah satu kaedah maju berkesan untuk rawatan air sisa berminyak. Bahan-bahan yang digunakan dalam pengeluaran membran adalah penting dan berbeza bergantung kepada penggunaan membran. Polyethersulfone (PES) adalah salah satu bahan membran yang sesuai untuk rawatan air sisa berminyak disebabkan oleh ciri-cirinya yang unggul seperti rintangan mekanikal, terma dan kimia yang tinggi sesuai untuk aplikasi mikrofiltrasi (MF) dan ultrafiltrasi (UF). Malangnya, membran PES mempunyai ciri hidrofobik yang berpotensi mudah terjejas semasa penapisan. Pengubahsuaian membran termasuk salutan permukaan dan kaedah pengadunan telah diperkenalkan untuk mengurangkan kekotoran dan meningkatkan hidrofilik untuk fluks permeat yang lebih tinggi. Dalam kerja ini, nanopartikel bukan organik termasuk titanium oksida (TiO2), silikon dioksida (SiO2) dan zink oksida (ZnO) telah diadun untuk membentuk membran matriks campuran (MMMs) melalui kaedah Pemisahan Fasa Teraruh Bukan Pelarut (NIPS) dalam kewujudan of polyvinylpyrrolidone (PVP) dan metil-2-pyrrolidone (NMP) sebagai pelarut. Parameter variasi yang dikaji termasuk penambahan satu jenis nanopartikel dan juga penambahan gabungan pelbagai jenis nanopartikel dalam membran masing-masing. Objektif utama penyiasatan ini adalah untuk mengkaji kesan nanopartikel pada sifat fizikal membran dan prestasi pemisahan emulsi air minyak. Membran dicirikan oleh SEM, EDX, TGA, kelikatan, FTIR, pengukuran sudut sentuh dan keliangan. Keputusan menunjukkan menambah satu jenis nanopartikel adalah lebih baik daripada menambah nanopartikel gabungan dari segi hidrofililik tinggi, aglomerasi yang rendah dan prestasi ultrafiltrasi emulsi air minyak. Antara 3 membran dengan penambahan TiO2, SiO2, dan ZnO masing-masing, membran yang digabungkan dengan TiO2 memperlihatkan fluks air tulen yang tertinggi iaitu 21.68 kg/m2.h dan mengalir fluks 7.95 kg/m2.h antara semua membran. Membran ini mempunyai hidrofililik tertinggi dengan nilai sudut 36.78+0.04o. Struktur seperti jari dan penyebaran TiO2 juga diperhatikan di bawah SEM. Di samping itu, membran ini juga membentangkan fenomena kekotoran yang terendah antara semua membran dengan FRR dan RFR sebanyak 48.57% dan 63.33% masing-masing. _______________________________________________________________________________________________________ The treatment of oily wastewater has become a worldwide challenge since large amount of oily wastewater produced everyday by industrial process and daily life usage. Thus, membrane technology is one of the effective advanced method for oily wastewater treatment. The materials used in production of membrane are important and vary depending on the application of membrane. Polyethersulfone (PES) is one of the applicable membrane materials for oily wastewater treatment due to its superior characteristics such as high mechanical, thermal and chemical resistance that is favourable for microfiltration (MF) and ultrafiltration (UF) applications. Unfortunately, PES membrane possesses hydrophobic characteristic which have potential susceptible to fouling during filtration. Membrane modification including surface coating and blending method had been introduced in order to mitigate fouling and increase hydrophilicity for higher permeate flux. In this current work, inorganic nanoparticles including titanium oxide (TiO2), silicon dioxide (SiO2) and zinc oxide (ZnO) were blended to form mixed matrix membrane (MMMs) via non-solvent induced phase separation (NIPS) method in the presence of polyvinylpyrrolidone (PVP) and methyl-2-pyrrolidone (NMP) as the solvent. Varies parameter studied include addition of one type of nanoparticle and also addition of combination of various nanoparticles types in the respective membrane. The main objectives of this work is to study the effects of nanoparticles on physical properties of membrane and separation performance of oil water emulsion. Fabricated membrane were characterized by SEM, EDX, TGA, viscosity, FTIR, contact angle measurement and porosity. The results showed adding one types of nanoparticles was better than adding combination nanoparticles in term of high hydrophilicity, low agglomeration and ultrafiltration performance of oil water emulsion. Among the 3 membranes with addition of TiO2, SiO2, and ZnO respectively, membrane incorporated with TiO2 displayed the highest pure water flux of 21.68 kg/m2.h and permeate flux of 7.95 kg/m2.h among all the fabricated membranes. This membrane had the highest hydrophilicity with contact angle value of 36.78+0.04o. Finger-like structure and well dispersion of TiO2 were observed under SEM. In addition, this membrane also presented the lowest fouling phenomenon among all the membranes with FRR and RFR of 48.57 % and 63.33 % respectively.
Contributor(s):
Liau Xin Jie - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875008093
Language:
English
Subject Keywords:
treatment; wastewater; Polyethersulfone
First presented to the public:
6/1/2019
Original Publication Date:
6/26/2019
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Chemical Engineering
Citation:
Extents:
Number of Pages - 93
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2019-06-26 16:29:53.278
Submitter:
Mohd Jasnizam Mohd Salleh

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Juxtaposition of polyethersulfone (pes) composite membrane Performance and antifouling capability1 2019-06-26 16:29:53.278