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由豆蛋白制备的可生物降解和可重复使用的海绵材料,用于有效去除重金属

Peineng Zhu¹, Yifu Chu¹, Fengmin Li²

¹Faculty of Agricultural, Life & Environmental Sciences, University of Alberta, Edmonton, Alberta T6G 2P5, Canada.

ACS applied materials & interfaces

|April 26, 2025

概括

这项研究开发了一种可持续的豆蛋白海绵吸附剂,用于从废水中去除重金属. 这种生物降解材料有效吸附铜,和,显示出高度的重复利用性和环保性.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
化学工程是化学工程的重要组成部分.

背景情况:

在废水处理中对可持续吸附剂的需求日益增加.
需要从农业副产品中获得的材料.
从工业废水中去除重金属的挑战.

研究的目的:

从豆蛋白中开发一种可生物降解,类似海绵的吸收剂.
调查硫酸度对吸附性质的影响.
为了评估改性豆蛋白海绵的重金属吸附性能.

主要方法:

用于吸附剂制造的液体泡模板.
使用硫酸来控制蛋白质聚合的盐分效应.
聚乙胺 (PEI) 移植以增强吸附部位.
对Cu (II),Zn (II) 和Ni (II) 离子进行吸附研究.
动力学,异热学和热力学分析.
生物降解性和可重复使用性测试.

主要成果:

豆蛋白海绵 (Pea_AS-PEI) 显示了可调的表面积和机械强度.
PEI的修改增加了多孔性,并引入了氨基基团.
最大的吸收能力:67.07 mg/g (Cu) 115.61 mg/g (Zn) 55.86 mg/g (Ni)
吸附遵循化学吸附和单层相互作用模型.
在5个循环中,海绵保持了>95%的Cu(II) 清除.
在28天内观察到高生物降解性.

结论:

基于豆蛋白质的海绵是有效的,可持续的重金属修复吸附剂.
调节性质和高吸附能力使它们对废水处理具有前景.
该材料显示出出色的可重复使用性和生物降解性,符合绿色化学原则.

关键词:

硫酸氨酸是一种硫酸.可生物降解,可生物降解.化化化化重金属吸附方式重金属吸附方式动力学和异热学.豆蛋白海绵是一种豆蛋白海绵.

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