用于重金属离子吸附的凹凸棒土改性研究进展

Research Progress of Modified Attapulgite for Heavy Metal

随着科技进步,生态环境受到重金属离子污染的问题受到各界广泛关注。凹凸棒土由于其较高的比表面积被广泛用于吸附去除水溶液中的重金属离子。开发有机改性凹凸棒是为了提高其对重金属离子吸附的选择性,提高吸附容量及增强吸附剂的再生能力。综述了近几年来有机改性凹凸棒土吸附重金属离子的研究进展。

With the progress of science and technology,the pollution of ecological environment by heavy metal ions has attracted wide attention from all walks of life.Attapulgite has been widely used to adsorb and remove heavy metal ions from aqueous solutions due to its high specific surface area.Organic modified attapulgite was developed in order to improve the adsorption selectivity of heavy metal ions,increase the adsorption capacity and enhance the regeneration ability of the adsorbent.The research progress of adsorption of heavy metal ions on organo-modified attapulgite in recent years is reviewed.