Department of Chemical Engineering, State University of Maringá, Maringá, Brazil.
Department of Textile Engineering, University of Guimarães, Guimarães, Portugal.
Environ Technol. 2020 Sep;41(23):3069-3080. doi: 10.1080/09593330.2019.1597172. Epub 2019 Apr 1.
A novel modification through pressurized filtration technique of commercial polyethersulfone membranes was proposed using a biopolymer extracted from Lam. (MO) along with graphene oxide (GO), in order to decrease fouling and improve the membrane selectivity for the removal of methylene blue dye. The effect of these agents over the morphology and performance of the membranes were studied through the evaluation of permeability, dye removal and fouling parameters. The characterization of the membrane indicates a significant decrease in pore size, as confirmed by the filtration experiments. Also, according to FTIR and SEM analysis the modification was effectively accomplished. All modified membranes presented low fouling rates (<10.55%) and high dye removal rates (from 2.85% to 96.73%). Furthermore, it is the first time that MO has been used as a natural polymer to improve and confer new characteristics on membranes, creating new possibilities for further study of this promising biopolymer in membrane separation processes.
提出了一种通过加压过滤技术对商用聚醚砜膜进行新型改性的方法，使用从 Lam.（MO）中提取的生物聚合物与氧化石墨烯（GO）一起使用，以减少污染并提高膜对亚甲基蓝染料去除的选择性。通过评估渗透性、染料去除和污染参数来研究这些添加剂对膜的形态和性能的影响。膜的特性表明孔径显著减小，这一点通过过滤实验得到了证实。此外，根据 FTIR 和 SEM 分析，改性得到了有效完成。所有改性膜的污染率均较低（<10.55%），染料去除率均较高（从 2.85%到 96.73%）。此外，这是首次将 MO 用作天然聚合物来改善和赋予膜新特性，为在膜分离过程中进一步研究这种有前途的生物聚合物创造了新的可能性。
