摘要
蒙脱石因具有2∶1型的层状结构、表面多种类型的活性位点和良好的阳离子交换能力,而被广泛用于废水处理。对蒙脱石形态结构进行调控可提高蒙脱石的吸附能力。该文首先从单一改性和复合改性两方面介绍了蒙脱石的改性方法及性能调控,重点归纳了改性蒙脱石吸附水中重金属的吸附机理;接着,综述了改性蒙脱石对水中重金属离子的吸附研究进展;最后,提出了改性蒙脱石吸附水中重金属离子存在的问题,指出未来的主要研究方向应合成更加环保高效、可分离回收、循环使用的复合改性蒙脱石。
Montmorillonite has been widely used in wastewater treatment due to its 2∶1 layered structure,multiple types of active sites on the surface and excellent cation exchange capacity.The adsorption capacity of montmorillonite can be improved by regulation on its morphology and structure.Herein,the modification methods and property control of modified montmorillonite were introduced in terms of single modification and composite modification,with the emphasis on the aqueous heavy metal adsorption mechanism.The research progress on the adsorption of heavy metal ions by modified montmorillonite in water were then reviewed.Finally,the existing problems of modified montmorillonite for adsorbing heavy metal ions were discussed,and it was pointed out that the future research direction should focus on the synthesis of more environmentally friendly,efficient,separable and recyclable composite modified montmorillonite.
作者
杨增烨
冯博
刘丽
YANG Zengye;FENG Bo;LIU Li(Jiangxi Provincial Key Laboratory of Environmental Pollution Prevention and Control in Mining and Metallurgy,Ganzhou 341000,Jiangxi,China;School of Resources and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China;Collaborative Innovation Center for Development and Utilization of Rare Metal Resources Co-sponsored by Ministry of Education and Jiangxi Province,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China)
出处
《精细化工》
北大核心
2025年第3期465-478,共14页
Fine Chemicals
基金
国家自然科学基金项目(52174248)
江西省自然科学基金项目(20202ACBL214010)
江西青年井冈山学者计划。
关键词
蒙脱石
改性
复合
吸附
重金属
montmorillonite
modification
composite
adsorption
heavy metals
