优化的抗化 γ-Al2O3/α-Al2O3纳米过复合膜用于从废水中回收木质素
Xuelong Zhuang1, Sung Woo Han1, Min Chang Shin1
1Department of Chemical and Biochemical Engineering, Dongguk University, 30, Pildong-ro 1 gil, Jung-gu, Seoul 04620, Republic of Korea.
Water research
|September 29, 2024
概括
新的化物纳米过膜减少了造纸厂废水中的化物. 膜表现出改善的防,高流量和稳定性,用于有效的水处理.
科学领域:
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
- 化学工程是化学工程的重要组成部分.
背景情况:
- 造纸厂的废水含有红素,这是一种需要有效分离的污染物.
- 传统的分离方法难以去除红素,影响水质.
- 纳米过 (NF) 提供了有效的素分离的潜力,但面临着膜污染和低流量的挑战.
研究的目的:
- 开发先进的含空纤维纳米过膜,用于素分离.
- 为了增强膜的防性质,流量和操作稳定性.
- 为了减少表面粗性和提高膜的机械完整性.
主要方法:
- 使用sol-gel浸泡涂层方法制造氧化空心纤维膜.
- 加入一个中间层,以减少表面粗性和改善机械性能.
- 使用X射线衍射 (XRD),扫描电子显微镜 (SEM),原子力显微镜 (AFM) 和水接触角测量进行表征.
主要成果:
- 膜表面粗度显著减少,从112.6nm降至62.9nm.
- C2T6T3膜表现出最低的粗度和清洗后82.39%的高流回收率 (FRR).
- 高初始流量 (25.58 L·m−2·h−1),有效的素排斥 (>80%),在144小时内稳定运行.
结论:
- 开发的化NF膜表现出优越的防性质和高性能的素分离.
- 层间方法有效地提高了膜表面特性和机械强度.
- 这些膜显示了可持续的纸厂废水处理的重大前景.
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