从废水中去除酸盐的La/Fe-双金属改性红粉:特征,吸附和机制
Yunrui Zhao1, Hui Luo1,2, Rubin Han1
1School of Civil and Ocean Engineering, Jiangsu Ocean University, Lianyungang 222005, China.
Materials (Basel, Switzerland)
|March 27, 2025
概括
这项研究开发了基于La的磁红粉 (La-Fe-RBP) 来有效地从废水中去除酸盐. 这种新型吸附剂表现出高容量,快速动力学和出色的选择性,使其适合于现实世界的应用.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 废水中的酸盐污染是一个重大的环境问题.
- 建筑垃圾红粉 (RBP) 提供了吸附材料的可持续来源.
- 开发高效和选择性的吸附剂对于有效的废水处理至关重要.
研究的目的:
- 准备和描述基于La的磁性红粉 (La-Fe-RBP) 以增强酸盐吸附.
- 研究La-Fe-RBP的吸附机制,动力学和容量.
- 为了评估La-Fe-RBP在实际废水条件下的性能.
主要方法:
- 用La和Fe对红色粉 (RBP) 的双金属修饰产生La-Fe-RBP.
- 吸附实验以确定动力学,异热量,pH效应和选择性.
- 使用FTIR和XPS进行表征以阐明吸附机制.
- 在家用污水上进行应用测试.
主要成果:
- 拉-Fe-RBP的理论吸附能力高达42.835 mg/g.
- 吸附遵循兰迈尔和伪二阶模型,表明单层化学吸附.
- 观察到快速吸附动力学,在40分钟内达到和度.
- 通过高选择性,在pH范围3-8之间实现了有效的酸盐去除.
- 经过处理的家用污水符合第四类地表水质量标准.
结论:
- 拉费-RBP是一种高效和选择性的吸附剂,用于从废水中去除酸盐.
- 吸附剂使用联结体交换和静电吸引机制.
- 该材料显示出在废水处理中实际应用的巨大潜力,利用可持续资源.
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