Surface matrix functionalization of ceramic-based membrane for oil-water separation: A mini-review
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pISSN: 0256-1115 eISSN: 1975-7220
REVIEW PAPER
INVITED REVIEW PAPER
Surface matrix functionalization of ceramic-based membrane for oil-water separation: A mini-review Yusuf Olabode Raji*,**, Mohd Hafiz Dzarfan Othman*,†, Nik Abdul Hadi Sapiaa Md Nordin***, Mohd Ridhwan Adam*, Zhong Sheng Tai*, Jamilu Usman*,****, and Ahmad Fauzi Ismail* *Advanced Membrane Technology Research Centre (AMTEC), School of Chemical and Energy Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia **Department of Chemical Engineering, Abubakar Tafawa Balewa University (ATBU), 0248, Bauchi, Nigeria ***Department of Chemical Engineering, Universiti PETRONAS (UTP), 32610 Seri Iskandar, Perak, Malaysia ****Department of Chemistry, Faculty of Science, Sokoto State University, P.M.B. 2134, Sokoto, Sokoto State, Nigeria (Received 29 February 2020 • Revised 14 April 2020 • Accepted 11 May 2020) AbstractAdvanced filtration requires a cost-effective, highly efficient and environmentally friendly membrane fabrication to achieve excellent and extreme oleophobic and hydrophilic states with an appropriate surface functionalization approach. For an efficient oil-water separation, surface material and structure have been categorized as superoleophobic (high oil repellency) and superhydrophilic (strong affinity to water). This can be attributed to their selective mechanisms. In addition, it is very important to consider these key factors as they will imperatively provide a unique capability to exhibit surface roughness, stimulate low and high surface energy, and improve surface chemistry, which makes membranes function efficiently for the oil and water separation system. In this review article, the application of ceramic membrane for oily water treatment and the principle of superhydrophilic and superoleophobic ceramic membrane for oil-water separation are elaborated and, in addition, the current progress for the use of inorganic material to functionalize ceramic membrane surface based on physical and chemical methods is appraised. Finally, the challenges and outlook on the membrane for oily-water treatment are briefly examined. Keywords: Ceramic Membrane, Superoleophobic and Superhydrophilic, Surface Functionalization
operational costs. The challenges of treating oily wastewater will require the use of an advanced separation strategy such as microfiltration (MF) and ultrafiltration (UF) techniques to treat a large proportion of water being lost from oily wastewater operation [10]. The MF process operates under a driving force (pressure) with the array of 0 to 2 bar for the removal of bacteria from feed solutions (liquid-liquid), colloid and suspended particles. MF makes use of porous membranes, which could be symmetric or asymmetric with a thickness of 10-150 m, molecular weight cut-off (MWCO) largely above 100 kDa and pore size ranging from 0.1-10 m, respectively. MF is primarily employed for biological treatment and in the design of bioreactors, which makes it the most appropriate process for oily wastewater applicati
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