化学工程2025，Vol.53Issue(11)：1-6,12,7.DOI:10.3969/j.issn.1005-9954.2025.11.001
聚乙烯亚胺-铁共改性膨润土对水中微塑料的吸附
Adsorption of microplastics in water by polyethyleneimine-iron co-modified bentonite clay
摘要
Abstract
A novel adsorbent PMB(organomagnetic modified bentonite)was prepared from bentonite as raw material using FeCl2·4H2O and FeCl3·6H2O as magnetic modifiers and polyethylene imine as organic modifier for adsorption of nanoplastics in water.The results show that SEM(scanning electron microscopy)analysis,FT-IR(Fourier transform infrared)spectroscopy,XRD(X-ray diffractometer),Zeta potential,and XPS(X-ray spectroscopy)characterisation indicate significant electrostatic attraction and surface complexation between PMB and PS-NPs(polystyrene nanoplastics).Magnetic analysis shows that the adsorbent has excellent superparamagnetism and meets the requirement of magnetic separation.The adsorption process of PS-NPs on PMB conforms to the proposed second-order kinetic equation and Sips isothermal adsorption model,and chemisorption dominates the adsorption process.A new method is provided for the adsorption of nanoplastics in water.关键词
磁性/聚乙烯亚胺/膨润土/吸附/纳米塑料Key words
magnetic/polyethyleneimine/magnetic bentonite/adsorption/nanoplastics分类
化学化工引用本文复制引用
马俐琪,沈俊杰,韩枫,刘思雨,李政,常可心,杨佳猛..聚乙烯亚胺-铁共改性膨润土对水中微塑料的吸附[J].化学工程,2025,53(11):1-6,12,7.基金项目
陕西省科技计划项目重点研发计划项目(2020SF-422) （2020SF-422）
