Gasemloo Sima, Sohrabi Mahmoud Reza, Khosravi Morteza, Dastmalchi Siavoush, Gharbani Parvin
Department of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran.
Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran and School of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
Water Sci Technol. 2016 Dec;74(11):2611-2619. doi: 10.2166/wst.2016.441.
The aim of this study is to prepare sulfated carboxymethyl cellulose (SCMC) nanofilter membrane using sulfur trioxide pyridine complex (SO/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 SO/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/(m·h), 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 SO/pyridine to CMC of 1) shows high separation efficiency in acidic conditions and improves the hydrophilicity and charge density of the filter.
本研究的目的是使用三氧化硫吡啶络合物（SO/吡啶）作为硫酸化剂，戊二醛（GA）作为交联剂，在聚砜支撑膜上制备硫酸化羧甲基纤维素（SCMC）纳滤膜。通过傅里叶变换红外光谱、X射线衍射、扫描电子显微镜、原子力显微镜和zeta电位对制备的纳滤膜进行表征。为了评估制备的纳滤膜，使用了不同量的SO/吡啶，并研究了它们的效率。结果表明，增加硫酸基团使通量从13.87提高到29.54 L/(m·h)，而在盐水溶液分离过程中截留率先增加后降低。可以得出结论，SCMC-GA-2（SO/吡啶与CMC的摩尔比为1）在酸性条件下显示出高分离效率，并提高了滤膜的亲水性和电荷密度。
