当前位置: X-MOL 学术J. Environ. Chem. Eng. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Graphene Oxide Based Mixed Matrix Membrane in the Presence of Eco-Friendly Natural Additive Gum Arabic
Journal of Environmental Chemical Engineering ( IF 7.7 ) Pub Date : 2021-05-09 , DOI: 10.1016/j.jece.2021.105638
P.V. Chai , P.Y. Choy , W.C. Teoh , E. Mahmoudi , W.L. Ang

The hydrophobic property of polymeric membrane is one of the major issues in water treatment application as it leads to a lower membrane efficiency and performance during separation process. Hence, a mixed-matrix membrane (MMM) that incorporates polymeric substance, natural additive and nanomaterial could be adopted to resolve this issue. This study portrays the preparation of a hydrophilic graphene oxide-based MMM by employing polysulfone (PSf) polymer, graphene oxide (GO) nanomaterial and eco-friendly natural additive gum Arabic (GA). The membranes were prepared via phase inversion by varying the concentration of GO (0.2, 0.6 and 1.0 wt%) at constant amount of GA and PSf at 1.5 wt % and 18 wt %, respectively. These fabricated membranes underwent several characterization tests in terms of surface hydrophilicity, pore size, porosity measurement and field emission scanning electron microscopy (FESEM). The characterization analysis indicated that MMM fabricated with 0.6 wt% of GO possessed highest porosity, largest mean pore size, and improved hydrophilicity due to the presence of oxygen containing functional groups associated with GO and GA. This contributed to the highest water flux result at an average of 63.55 L/m2.h at 4 bar operating pressure. At the same time, it also exhibited a considerably good rejection property and stronger antifouling property with humic acid rejection rate of 95% and flux recovery ratio of 88%, respectively. The finding showed that the incorporation of GO and GA could attain synergy benefits in improving the membrane properties and performance.



中文翻译:

存在生态友好型天然阿拉伯胶的氧化石墨烯基混合基质膜

聚合物膜的疏水性是水处理应用中的主要问题之一,因为它导致分离过程中膜效率和性能降低。因此,可以采用结合了聚合物质,天然添加剂和纳米材料的混合基质膜(MMM)来解决此问题。这项研究描绘了通过使用聚砜(PSf)聚合物,氧化石墨烯(GO)纳米材料和生态友好的天然添加剂阿拉伯胶(GA)制备基于亲水氧化石墨烯的MMM。通过相变制备膜,方法是分别 以恒定量的GA和PSf(分别为1.5  wt%和18 )改变GO(0.2、0.6和1.0 wt%)的浓度 分别为wt%。这些制成的膜在表面亲水性,孔径,孔隙率测量和场发射扫描电子显微镜(FESEM)方面进行了几项表征测试。表征分析表明, 由于存在与GO和GA相关的含氧官能团,用0.6 wt%的GO制备的MMM具有最高的孔隙率,最大的平均孔径和改善的亲水性。这导致了最高的水通量结果,平均水平为4,63.55  L / m 2 .h 巴的工作压力。同时,它还表现出相当好的排斥性能和更强的防污性能,腐殖酸的排斥率分别为95%和通量回收率分别为88%。该发现表明GO和GA的结合可以在改善膜性能和性能方面获得协同效益。

更新日期:2021-05-10
down
wechat
bug