电化/Fe-Mn纳米纤维复合材料,以有效和快速地从水中去除化
Lingli Min1, Yahui Ma1, Bi Zhang1
1College of Resources and Environmental Science, Quanzhou Normal University, Quanzhou 362000, China.
Toxics
|March 27, 2024
概括
一种新的铁功能化酸盐纳米纤维 (Fe-Mn@CS NF) 吸收剂有效地从水中去除有毒的. 这种材料实现了高的去除率,可以再生再利用,为污染提供了一个有希望的解决方案.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学 化学 化学
背景情况:
- (III) 是水源中高度移动和有毒的污染物.
- 有效地去除微量含量的 (III) 带来了重大的环境挑战.
研究的目的:
- 开发和评估一种功能化酸盐纳米纤维吸附剂 (Fe-Mn@CS NF) 用于有效地从水中去除 (III).
- 在各种条件下研究Fe-Mn@CS NF的吸附性能和机制.
主要方法:
- 一个阶段的混合电来合成Fe-Mn@CS NF.
- 批量吸附研究以评估基于接触时间,初始As (III) 度,离子强度和竞争性离子的效率.
- 动力分析和表面复杂化研究.
- 吸附剂再生和可重复使用性测试.
- 用X射线光电子光谱 (XPS) 和富里埃变换红外光谱 (FTIR) 进行表面分析.
主要成果:
- Fe-Mn@CS NF表现出异常高的As (III) 清除效率 (99.8%),在pH值6.5.5下将度从550降至<1.2μg/L.
- 在2.6小时内迅速达到吸附平衡.
- 吸附涉及内部球面复合体的形成;硫酸盐和化物的影响最小,而酸盐竞争网站.
- 在自然地下水中经过10个再生周期后,吸附剂保持了超过65%的效率.
- 表面M-OH和C-O组被确定为As (III) 清除的关键.
结论:
- Fe-Mn@CS NF是一种高效,快速的吸附剂,可从水中去除微量酸.
- 吸附剂在复杂的水矩阵中表现出良好的可重复使用性和稳定性.
- 这些发现凸显了Fe-Mn@CS NF在实际水处理应用中的潜力.
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