改性聚烯胺纳米纤维膜,用于有效地从垃圾填埋场中去除酸盐
Maryam Moghadam1, Arash Dalvand1, Elham Arkan2
1Environmental Science and Technology Research Center, Department of Environmental Health Engineering, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
Scientific reports
|July 2, 2025
概括
这项研究开发了一种新型的聚烯胺纳米纤维膜,该膜与使用绿茶提取物合成的银纳米颗粒进行了修饰,以有效地从垃圾填埋场液中去除酸盐. 增强的膜显示了水处理性能和材料性能的显著改善.
科学领域:
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
- 纳米技术 纳米技术
背景情况:
- 垃圾填埋场液由于高度的酸盐而造成环境风险.
- 有效和可持续的酸盐去除方法对于废水处理至关重要.
研究的目的:
- 开发和描述通过绿茶 (GT) 提取物合成的银纳米粒子 (Ag) 修改的聚烯胺 (PAM) 纳米纤维.
- 为了评估制造的PAM/Ag@GT膜在从垃圾填埋场泄漏物中去除酸盐的效率.
- 使用实验设计 (DOE) 方法优化酸盐去除过程.
主要方法:
- 使用GT提取物合成Ag纳米粒子.
- 通过电制造PAM/Ag@GT纳米纤维.
- 使用SEM,FESEM和FTIR进行表征.
- 膜性质的评价:水友性,水流,防腐,抗拉强度.
- 使用DOE (流量,pH,压力) 优化酸盐去除.
主要成果:
- PAM/Ag@GT膜的纤维直径减少,孔隙性增加 (58.6%),水友性改善,度降低 (3 NTU).
- 酸盐去除效率显著提高,从32%提高到73.25%.
- 最佳条件实现了高液流量 (1850 L/m2·h) 和流量回收 (84.45%).
- 观察到增强的机械性能 (抗拉强度,延伸).
结论:
- PAM/Ag@GT膜在从垃圾填埋场液中去除酸盐方面表现出卓越的性能.
- 开发的纳米材料为废水处理提供了一个有希望的,可持续的解决方案.
- 该研究强调了绿色合成方法在环境应用中的潜力.
相关概念视频
Potentiometry: Membrane Electrodes
2.2K
Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at...
2.2K
Extraction: Advanced Methods
1.2K
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
1.2K
Microbial Leaching
209
Microbial leaching, also known as bioleaching, is an environmentally favorable method for extracting metals from low-grade ores using specific microorganisms. This biotechnological approach is particularly valuable for mining operations targeting copper, gold, and uranium, where traditional extraction methods may be economically or environmentally impractical.Copper Leaching and Microbial CatalysisIn copper bioleaching, crushed ore is arranged into heaps and irrigated with a dilute sulfuric...
209


