聚酰胺胺树形分子改性分离膜在水处理中的研究进展

Research Progress of Polyamide-amine Dendrimer Modified Separation Membrane in Water Treatment

膜分离技术是目前在水处理中运用最广泛的技术之一,但是分离所用的膜在使用过程中容易被污染,影响膜的分离性能和使用寿命。聚酰胺胺(PAMAM)树形分子含有高度分支结构及大量末端基团,将其引入分离膜中可以使膜具有较高水通量、较高截留率和较强抗污性等优势。目前PAMAM改性分离膜已经在饮用水净化、工业废水处理及海水淡化等领域得到广泛研究。本文主要介绍了PAMAM改性超滤膜、纳滤膜、正/反渗透膜及其在水处理领域中的研究进展,并讨论了其研究发展方向。

Membrane separation technology is nowadays one of the most widely used technologies in water treatment,but the membrane used in the separation process is liable to contamination,thus affecting the separation performance and service life of the membrane.Polyamide-amine(PAMAM)dendrimers contain highly branched structure and a large number of terminal groups,which can be introduced into the separation membranes to endow the membrane with advantages,such as high water flux,high rejection rate and good anti-fouling property.At present,PAMAM modified separation membranes have been widely studied in the fields of drinking water purification,industrial wastewater treatment,seawater desalination and so on.This review mainly introduces the research progress of PAMAM modified ultrafiltration membrane,nanofiltration membrane,forward/reverse osmosis membrane and their applications in water treatment,and discusses the development direction of PAMAM modified separation membranes.