Malaysian Journal of Analytical Sciences Vol 21 No 2 (2017): 381 - 390

DOI: https://doi.org/10.17576/mjas-2017-2102-13

 

 

 

FABRICATION OF PES/MnO MIXED MATRIX MEMBRANES FOR CADMIUM REMOVAL

 

 (Pembuatan PES/MnO Membran Campuran Matrik dalam Penyingkiran Kadmium)

 

Soon Onn Lai¹, Kok Chung Chong¹, Zhi Wei Kerk¹, Boon Seng Ooi²*,Woei Jye Lau³

 

¹Lee Kong Chian Faculty of Engineering and Science,

Universiti Tunku Abdul Rahman, Jalan Sungai Long, Bandar Sungai Long, 43300 Kajang, Malaysia

²School of Chemical Engineering, Engineering Campus,

University Sains Malaysia, Seri Ampangan, 14300 Nibong Tebal, Pulau Pinang, Malaysia.

³Advanced Membrane Technology Research Centre (AMTEC),

Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia

 

*Corresponding author: chobs@usm.my

 

 

Received: 26 August 2016; Accepted: 8 January 2017

 

 

Abstract

With increasing industrial activities around the globe, water source had been severely polluted by various heavy metal substances that lead to adverse effect not only to the environment but also to human being. The content of heavy metal in wastewater especially cadmium was increasing in the recent years and can be attributed to the strong demand of cadmium in the battery and electroplating industry. In this study, the potential of novel nanocomposite mixed matrix membrane incorporated with manganese oxide (MnO₂) nanoparticle for cadmium removal was investigated. The membranes were fabricated using polyethersulfone (PES) by phase inversion technique with different manganese oxide nanoparticle loading. Prior to performance evaluation, the membranes were characterized by their structural morphology, surface chemistry and cadmium adsorption capability. The results suggested that PES membrane incorporated with 2.0 ratio of MnO₂/PES exhibited the best result in both cadmium adsorption (51.7 mg/g) and water permeability (1462 L/m².h.bar). This indicated the prospect of this membrane to be applied in wastewater treatment industry.

 

Keywords:  mixed matrix membrane, polyethersulfone, cadmium, wastewater

 

Abstrak

Sumber air di seluruh dunia telah teruk tercemar dengan pelbagai bahan logam berat yang akan memberi kesan buruk kepada alam sekitar dan manusia. Pencemaran air ini adalah akibat daripada aktiviti-aktiviti perindustrian yang semakin pesat di dunia kita. Kandungan logam berat dalam air sisa terutamanya kadmium semakin meningkat dalam beberapa tahun ini disebabkan oleh permintaan kadmium yang tinggi terutamanya dalam industri bateri dan elektropenyaduran. Dalam kajian ini, potensi membran campuran matrik yang baharu dengan mangan oksida (MnO₂) dikajikan dalam sistem turas aliran lintang untuk penyingkiran kadmium. Membran ini dibuat daripada polietersulfona (PES) dengan teknik fasa berbalik dengan pelbagai berat zarah nano mangan oksida. Sebelum kajian dijalankan, membran dicirikan dengan kajian struktur dan permukaan morfologi, keliangan, sudut kenalan permukaan, kajian pembenaman MnO₂ dan kajian penjerapan kadmium. Hasil kerja kajian ini mencadangkan bahawa membran PES dengan nisbah 2.0 MnO₂ menunjukkan keputusan yang memberangsangkan dalam penjerapan kadmium (51.7 mg/g) dan fluks air tulen yang paling tinggi (1,462 L/m².h.bar). Keputusan kajian ini telah menunjukkan membran mempunyai potensi yang besar digunakan dalam industri rawatan air sisa.

 

Kata kunci:  membran matriks campuran, polietersulfon, kadmium,  air sisa

 

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