Please use this identifier to cite or link to this item: http://ir.unikl.edu.my/jspui/handle/123456789/7189
metadata.conference.dc.title: Fouling of ultrafiltration membrane during adsorption of long chain fatty acid in glycerine solutions
metadata.conference.dc.contributor.*: Indok Nurul Hasyimah Mohd Amin
Abdul Wahab Mohammad
metadata.conference.dc.subject: Adsorptio
fatty acid
fouling
glycerin
Ultrafilteration
metadata.conference.dc.date.issued: 2013
metadata.conference.dc.publisher: Universiti Kebangsaan Malaysia
metadata.conference.dc.identifier.citation: Abdul Wahab Mohammad & Indok Nurul Hasyimah Mohd Amin. Fouling of ultrafiltration membrane during adsorption of long chain fatty acid in glycerine solutions. Sains Malaysiana, 42, 827-836
metadata.conference.dc.relation.ispartofseries: Sains Malaysiana;
metadata.conference.dc.description.abstract: Membrane fouling caused by the adsorption of fatty acids limits the application of membrane technology in oleochemical industry especially for the pretreatment of glycerin-rich solution. The aim of the work presented in this paper was to understand the adsorptive fouling of palm oil based fatty acid on ultrafiltration membranes. The influence of solution pH, molecular weight cut-off (MWCO) and hydrophobicity of the membrane were studied. Oleic acid was used as a foulant, representing the long chain palm oil based fatty acid in glycerol−water solution. The outer membrane exposed to the mixtures for 6 h without pressure. The stirring speed was set at 300 rpm and polyethersulfone (PES) membranes with MWCO of 5, 20 and 25 kDa were used. The adsorptive fouling was determined using the relative flux reduction (RFR) method. It is demonstrated in this study that PES membranes are susceptible to the deposition of fatty acids on the membrane surface and pores. The fouling phenomenon at low pH is more severe than that of high pH due to the attractive force between solutes and the membrane. The PES membranes after adsorption were characterized by contact angle and Fourier transform infrared (FTIR), while the surface was visualized with scanning electron microscopy (SEM).Membrane fouling caused by the adsorption of fatty acids limits the application of membrane technology in oleochemical industry especially for the pretreatment of glycerin-rich solution. The aim of the work presented in this paper was to understand the adsorptive fouling of palm oil based fatty acid on ultrafiltration membranes. The influence of solution pH, molecular weight cut-off (MWCO) and hydrophobicity of the membrane were studied. Oleic acid was used as a foulant, representing the long chain palm oil based fatty acid in glycerol−water solution. The outer membrane exposed to the mixtures for 6 h without pressure. The stirring speed was set at 300 rpm and polyethersulfone (PES) membranes with MWCO of 5, 20 and 25 kDa were used. The adsorptive fouling was determined using the relative flux reduction (RFR) method. It is demonstrated in this study that PES membranes are susceptible to the deposition of fatty acids on the membrane surface and pores. The fouling phenomenon at low pH is more severe than that of high pH due to the attractive force between solutes and the membrane. The PES membranes after adsorption were characterized by contact angle and Fourier transform infrared (FTIR), while the surface was visualized with scanning electron microscopy (SEM).
metadata.conference.dc.description: Publsihed in ISI Journal. Full text article also available in http://www.ukm.my/jsm/pdf_files/SM-PDF-42-6-2013/16%20Abdul%20Wahab.pdf
metadata.conference.dc.identifier.uri: http://www.myjurnal.my/public/article-view.php?id=72054
http://www.ukm.my/jsm/contents.html
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metadata.conference.dc.identifier.issn: 0126-6039
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