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   Fabrication and characterization of a polysulfone-graphene oxide nanocomposite membrane for arsenate rejection from water  
   
نویسنده Rezaee Reza ,Nasseri Simin ,Mahvi Amir Hossein ,Nabizadeh Ramin ,Mousavi Abbas ,Rashidi Alimorad ,Jafari Ali ,Nazmara Shahrokh
منبع journal of environmental health science and engineering - 2015 - دوره : 13 - شماره : 8 - صفحه:1 -11
چکیده    Background: nowadays, study and application of modified membranes for water treatment have been consideredsignificantly. the aim of this study was to prepare and characterize a polysulfone (psf)/graphene oxide (go)nanocomposite membrane and to evaluate for arsenate rejection from water.materials and methods: the nanocomposite psf/go membrane was fabricated using wet phase inversionmethod. the effect of go on the synthesized membrane morphology and hydrophilicity was studied by usingfe-sem, afm, contact angle, zeta potential, porosity and pore size tests. the membrane performance was alsoevaluated in terms of pure water flux and arsenate rejection.results: atr-ftir confirmed the presence of hydrophilic functional groups on the surface of the prepared go.fe-sem micrographs showed that with increasing go content in the casting solution, the sub-layer structure wasenhanced and the drop like voids in the pure psf membrane changed to macrovoids in psf/go membrane alongwith increase in porosity. afm images indicated lower roughness of modified membrane compared to pure psfmembrane. furthermore, contact angle measurement and permeation experiment showed that by increasing goup to 1 wt%, membrane hydrophilicity and pure water flux were increased. for psf/go-1, pure water flux wascalculated about 50 l/m2h at 4 bar. the maximum rejection was obtained by psf/go-2 about 83.65 % at 4 bar.moreover, it was revealed that arsenate rejection depended on solution ph values. it was showed that withincreasing ph, the rejection increased.conclusions: this study showed that application of go as an additive to psf casting solution could enhance themembrane hydrophilicity, porosity, flux and arsenate rejection.
کلیدواژه Mixed matrix membrane ,Polysulfone ,Graphene oxide ,Hydrophilicity ,Arsenate
آدرس tehran university of medical sciences tums, ایران, tehran university of medical sciences tums, ایران, tehran university of medical sciences tums, ایران, tehran university of medical sciences tums, ایران, sharif university of technology, Department of Chemical and Petroleum Engineering, ایران, Research Institute of Petroleum Industry (RIPI), Nanotechnology Research Center, ایران, lorestan university of medical sciences, ایران, tehran university of medical sciences tums, ایران
 
     
   
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