纳米材料用于薄层复合正渗透膜的制备

Preparation of Thin Layer Composite Forward Osmosis Membrane by Using Nanomaterial

正渗透是一种以渗透压为驱动力的膜分离技术,它具有低污染、低能耗、在常温常压下运行等优点,因而被广泛地应用于水处理和脱盐。然而,正渗透技术依然存在一些瓶颈,包括浓差极化现象、膜污染、溶质的反向扩散和新的膜材料以及汲取液的设计。纳米材料的快速发展为解决这些问题提供了一种有效的途径,将无机纳米材料作为填料,添加到薄层复合(TFC)膜中能够有效地增正渗透性能。这篇综述概括了纳米无机材料作为填料用于薄层复合正渗透膜的制备。

Forward osmosis（FO） is a kind of membrane separation technology driven by osmotic pressure. It has many advantages such as low pollution,low energy consumption,operation at room temperature and normal pressure,so it was widely used in water treatment and desalination. However,there are still some bottlenecks in the forward osmosis technology,such as concentration polarization,membrane fouling,solute diffusion,and the design of the new membrane and draw solution. The rapid development of nanomaterials has provided an effective way to solve these problems. It can be effective increase the performance of the FO membrane by adding inorganic nanomaterials as fillers in the preparation of thin film composite（TFC）membrane. This review summaried the inorganic nanomaterials were used to the preparation of TFC FO membranes.