二氧化与纤维素酸盐混合的矩阵膜,用于从水溶液中去除沙夫兰素-O
Suvarna P Dhongade1,2, Surya Teja Malkapuram1, Shirish H Sonawane3
1Department of Chemical Engineering, National Institute of Technology Warangal, Hanumakonda, Telangana State, India, 506 004.
Environmental science and pollution research international
|October 30, 2024
概括
这项研究开发了新的纤维素酸/二氧化 (CA/SiO2) 膜,以有效地去除Safranin-O染料. 优化的2.5%重量SiO2膜实现了近100%的染料去除,并提高了水的透性.
科学领域:
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
- 聚合物化学 聚合物化学
背景情况:
- 纳米颗粒的结合增强了混合矩阵膜 (MMM),提高了水友性,溶解物排斥和稳定性.
- 二氧化 (SiO2) 纳米颗粒具有较高的孔隙性和表面积,非常适合强化诸如纤维素酸 (CA) 等聚合物矩阵.
研究的目的:
- 为了合成和描述新的CA/SiO2吸附膜.
- 为了评估这些膜在从水溶液中去除色素safranin-O (Sf-O) 的性能.
- 优化SiO2含量和操作条件,以获得最大的染料去除效率.
主要方法:
- 使用相位逆转方法制备了CA/SiO2膜.
- 通过接触角度,XRD,FE-SEM,EDS,FTIR,TGA和抗拉强度测试来表征膜的物理化学特性.
- 吸附性能通过改变pH值,初始染料度和工作压力来评估.
主要成果:
- 在CA矩阵中,最佳的膜组成是2.5%重量%SiO2.
- 这种膜在优化条件下 (pH9,50 ppm染料,1 bar压力) 实现了大约100%的Sf-O染料去除.
- 与其他测试膜相比,2.5%的CA/SiO2膜表现出优越的水透性.
结论:
- 纳入SiO2纳米粒子显著改善了CA膜的结构,机械和热性能.
- 开发的CA/SiO2膜显示出了有效的染料去除和水净化的巨大潜力.
- 优化的CA/SiO2膜为废水处理应用提供了增强的水透性和选择性.
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