文章信息/Info

Title:

A Review on Charged Forward Osmosis Membranes

作者:

熊鷹1 2; 曾香2; 崔佳鑫3; 毛旭輝3

（1. 北京大學深圳研究生院，廣東 深圳 518000）（2. 中山朗清膜業有限公司，廣東 中山 528400）（3. 武漢大學資源與環境科學學院，湖北 武漢 430072）

Author(s):

XIONG Ying 1;  ZENG Xiang 2;  Cui Jiaxin 3;  MAO Xuhui 3

（1. Shenzhen Graduate school, Peking University, Shenzhen 518000, China）（2. Zhongshan Lonkee Membrane Co.,Ltd., Zhongshan 528400, China）（3. School of Resource and Environmental Science, Wuhan University, Wuhan 430072, China）

關鍵詞:

荷電正滲透膜; 正滲透; 制備方法; 濃差極化; 荷電膜

Keywords:

Charged forward osmosis membrane;  Forward osmosis;  Preparation method;  Concentration polarization;  Charged membrane

DOI:

10.7502/j.issn.1674-3962.2018.02.03

文獻標志碼:

A

摘要:

正滲透是利用選擇性半透膜兩側溶液的滲透壓作為驅動力，使純水透過膜。正滲透分離技術是一項能耗低、回收率高、環境友好的綠色能源技術，在廢水處理、海水脫鹽等方面具有很大的應用潛力。但是，膜分離過程中的濃差極化現象，限制了正滲透技術的商業化應用。荷電膜在分離過程中具有篩分和Donnan效應的雙重作用，能有效提高膜的分離效率、水通量及耐污染能力。荷電膜的特殊分離機理使得其在正滲透技術中的應用具有極大的優勢。本文主要介紹了現有文獻報道的荷電正滲透膜的制備方法，并討論了荷電膜的電荷性質及數量對正滲透過程的濃差極化、膜污染、水通量、親水性、截留率及反向溶質擴散等因子的影響，為未來正滲透膜材料的研究和正滲透技術的廣泛應用提供參考。

Abstract:

Forward osmosis (FO) uses osmotic pressure of solution on both sides of membrane to drive water through membrane. FO is a kind of green technology with low energy consumption and high recovery rate. It has application prospect in wastewater treatment and seawater desalination. Meanwhile, the obstacle of the commercial application of FO is that the process suffers from the issue of concentration polarization. The charged membrane has the double effect of sieving and Donnan effect during the separation process, which can effectively improve the separation efficiency, water flux and pollution resistance of the membrane. This paper introduces the preparation method of charged forward osmosis membranes, and discusses the influence of charge properties and number of charged membranes to fouling, hydrophilicity, water flux, retention rate and reverse effect of solute diffusion and other factors in FO process. The paper will provide reference for future research in FO membrane materials and the application of forward osmosis technology.