title: Removal of bisphenol A by adsorption mechanism using PES-SiO2 composite membranes.
abstract: Polyethersulphone (PES) membranes blended with silicon dioxide (SiO2) nanoparticles were prepared via a dry-jet wet spinning technique for the removal of bisphenol A (BPA) by adsorption mechanism. The morphology of SiO2 nanoparticles was analysed using a transmission electron microscopy and particle size distribution was also analysed. The prepared membranes were characterized by several techniques including field emission scanning electron microscopy, Fourier transform infrared spectroscopy and water contact angle. The adsorption mechanism of membrane towards BPA was evaluated by batch experiments and kinetic model. The influence of natural organic matter (NOM) in feed water on membrane BPA removal was also studied by filtration experiments. Results showed that BPA adsorption capacity as high as 53 µg/g could be achieved by the PES membrane incorporated with 2 wt% SiO2 in which the adsorption mechanism was in accordance with the pseudo-second-order kinetic model. The intraparticles diffusion model suggested that the rate limiting factor of membrane adsorption mechanism is governed by the diffusion of BPA into the membrane pores. The presence of 10 ppm NOM has reported to negatively reduce BPA removal by 24%, as it tended to compete with BPA for membrane adsorption. This work has demonstrated that PES-SiO2 membrane has the potential to eliminate trace amount of BPA from water source containing NOM.
authors.affiliation: a Center for Environmental Sustainability and Water Security (IPASA), Research Institute for Sustainable Environment (RISE), Faculty of Civil Engineering , Universiti Teknologi Malaysia , Skudai , Malaysia.|b Department of Environmental Engineering, Faculty of Civil Engineering , Universiti Teknologi Malaysia , Skudai , Malaysia.
authors.forename: Mimi Suliza
authors.initials: MS
authors.lastname: Muhamad
authors.affiliation: a Center for Environmental Sustainability and Water Security (IPASA), Research Institute for Sustainable Environment (RISE), Faculty of Civil Engineering , Universiti Teknologi Malaysia , Skudai , Malaysia.|b Department of Environmental Engineering, Faculty of Civil Engineering , Universiti Teknologi Malaysia , Skudai , Malaysia.
authors.forename: Mohd Razman
authors.initials: MR
authors.lastname: Salim
authors.affiliation: c Advanced Membrane Technology Research Centre (AMTEC) , Universiti Teknologi Malaysia , Skudai , Malaysia.
authors.forename: Woei Jye
authors.initials: WJ
authors.lastname: Lau
authors.affiliation: a Center for Environmental Sustainability and Water Security (IPASA), Research Institute for Sustainable Environment (RISE), Faculty of Civil Engineering , Universiti Teknologi Malaysia , Skudai , Malaysia.|b Department of Environmental Engineering, Faculty of Civil Engineering , Universiti Teknologi Malaysia , Skudai , Malaysia.
authors.forename: Tony
authors.initials: T
authors.lastname: Hadibarata
authors.affiliation: a Center for Environmental Sustainability and Water Security (IPASA), Research Institute for Sustainable Environment (RISE), Faculty of Civil Engineering , Universiti Teknologi Malaysia , Skudai , Malaysia.|d Department of Hydraulics and Hydrology, Faculty of Civil Engineering , Universiti Teknologi Malaysia , Skudai , Malaysia.
authors.forename: Zulkifli
authors.initials: Z
authors.lastname: Yusop
mesh_terms: D000327:Adsorption; D001559:Benzhydryl Compounds / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*; D006812:Humic Substances; D008567:Membranes, Artificial; D010636:Phenols / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*; D011108:Polymers / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry*; D013450:Sulfones / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification*; D018508:Water Purification; D000098826:Bisphenol A Compounds
chemical_list: D001559:Benzhydryl Compounds; D006812:Humic Substances; D008567:Membranes, Artificial; D010636:Phenols; D011108:Polymers; D012822:Silicon Dioxide; D013450:Sulfones; D014874:Water Pollutants, Chemical; C022840:polyether sulfone; C006780:bisphenol A; D000098826:Bisphenol A Compounds
keywords: Polyethersulphone; adsorption mechanism; bisphenol A; natural organic matter; silicon dioxide