Recent progress on AQP based biomimetic membranes for water treatment
Membrane separation technologies have been widely applied in drinking water purification, waste water treatment,seawater desalination,and many other fields. Traditional membrane technologies,such as reverse osmosis(RO)and ultrafiltration(UF),have gained rapid development but are still limited due to their low water flux or low salt rejection rate. Aquaporin(AQP),one kind of protein vastly existed in cell membranes,has special"water channels"which only allow water molecules to pass through but reject all the other molecules and ions. Thus,when incorporating AQPs into traditional membranes,the produced biomimetic membranes could exert AQP's superiorities and obtain the properties of enhanced water flux and desalination rate. This paper introduced the structure and fast water transport mechanism of aquaporins,then generalized different AQP based biomimetic membrane preparation methods and compared the performance improvements of these membranes. Limitations of current biomimetic membranes were also addressed,such as difficulty to scale up and instability under extreme conditions. Finally,ideas of developing new AQP loading techniques and fabricating new"water channel"materials were presented.
国家科技期刊平台
NSTL
万方数据
维普
