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制备磁性DTPA修饰的奇托复合微球,用于从水溶液中增强Pb的吸附

Xueling Liu¹, Yajing Wang², Xiaofen Wu¹

¹School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan 430023, PR China.

International journal of biological macromolecules

|February 28, 2024

概括

磁性DTPA修饰的奇托复合微球 (MDCM) 有效地从水中去除 (Pb(II)). 这些可重复使用的微球显示出高吸附能力和废水处理的潜力.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
纳米技术纳米技术

背景情况:

(Pb) 污染对水生生态系统和人类健康构成重大风险.
有效和可重复使用的吸附剂对于从工业废水中去除至关重要.
基于酸盐的磁性复合材料为重金属修复提供了有前途的解决方案.

研究的目的:

为了合成和描述磁性DTPA修饰的奇托复合微球 (MDCM).
研究MDCM在从水溶液中去除Pb (II) 的效率.
评估开发的吸附剂的吸附机制,动力学和可重复使用性.

主要方法:

使用逆乳液双交联方法制备MDCM.
使用FTIR,SEM,XRD,VSM,BET和13CNMR进行MDCM的表征.
吸附实验,以确定pH,接触时间,初始度和竞争性离子对Pb (II) 移除的影响.

主要成果:

在广泛的pH范围内,在有竞争性离子存在的情况下,MDCM表现出高的Pb(II) 去除效率.
的最大吸附能力达到214.63毫克g-1,超过了许多报告的磁吸附剂.
吸附遵循伪二阶动力学和兰格穆尔异热学,在五个周期内有效再生.

结论:

由于其高容量和稳定性,MDCM在Pb(II) 吸附方面表现出色.
磁性特性使其易于分离和重复使用,使MDCM成为成本效益高的吸附剂.
在处理污染废水方面,MDCM具有重要的实际应用潜力.

关键词:

吸附方式吸附方式吸附方式使用DTPA修饰的奇托桑.微球微球是指微球的小部分.

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