title: Fabrication of sulfated nanofilter membrane based on carboxymethyl cellulose.
abstract: The aim of this study is to prepare sulfated carboxymethyl cellulose (SCMC) nanofilter membrane using sulfur trioxide pyridine complex (SO3/pyridine) as sulfating agent and glutaraldehyde (GA) as a crosslinking agent onto polysulfone supporting membrane. The prepared nanofilter was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, atomic force microscopy and zeta potential. To evaluate the prepared nanofilter, various amounts of SO3/Pyridine were used and efficiency of them was investigated. The results showed that increasing the sulfate groups raised the flux from 13.87 to 29.54 L/(m2·h-1), whereas percentage rejection was increased during the separation of salt aqueous solutions and then decreased. It can be concluded that, SCMC-GA-2 (with molar ratio of SO3/pyridine to CMC of 1) shows high separation efficiency in acidic conditions and improves the hydrophilicity and charge density of the filter.
authors.affiliation: Department of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran.
authors.forename: Sima
authors.initials: S
authors.lastname: Gasemloo
authors.affiliation: Department of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran.
authors.forename: Mahmoud Reza
authors.initials: MR
authors.lastname: Sohrabi
authors.affiliation: Department of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran.
authors.forename: Morteza
authors.initials: M
authors.lastname: Khosravi
authors.affiliation: Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran and School of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
authors.forename: Siavoush
authors.initials: S
authors.lastname: Dastmalchi
authors.affiliation: Department of Chemistry, Ahar Branch, Islamic Azad University, Ahar, Iran E-mail: parvingharbani@yahoo.com; p-gharabani@iau-ahar.ac.ir.
authors.forename: Parvin
authors.initials: P
authors.lastname: Gharbani
mesh_terms: D002266:Carboxymethylcellulose Sodium / Q000737:chemistry*; D005374:Filtration / Q000295:instrumentation; D005976:Glutaral / Q000737:chemistry; D008567:Membranes, Artificial; D018625:Microscopy, Atomic Force; D008855:Microscopy, Electron, Scanning; D036103:Nanotechnology; D011108:Polymers / Q000737:chemistry; D011725:Pyridines / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D013431:Sulfates / Q000737:chemistry; D013450:Sulfones / Q000737:chemistry; D013461:Sulfur Oxides / Q000737:chemistry; D014961:X-Ray Diffraction
chemical_list: D008567:Membranes, Artificial; D011108:Polymers; D011725:Pyridines; D013431:Sulfates; D013450:Sulfones; D013461:Sulfur Oxides; C022840:polyether sulfone; C011118:sulfur trioxide; D002266:Carboxymethylcellulose Sodium; D005976:Glutaral