CIESC Journal ›› 2020, Vol. 71 ›› Issue (11): 4885-4902.DOI: 10.11949/0438-1157.20200305

• Celebration Column for School of Chemistry and Chemical Engineering, Nanjing University • Previous Articles     Next Articles

Optimization of polyamide selective layer for preparation of high permselectivity reverse osmosis membranes

Jiao DU(),Zhi WANG(),Xu LI,Jixiao WANG   

  1. Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300350, China
  • Received:2020-03-23 Revised:2020-06-24 Online:2020-11-05 Published:2020-11-05
  • Contact: Zhi WANG

优化聚酰胺分离层制备高选择透过性反渗透膜

杜娇(),王志(),李旭,王纪孝   

  1. 天津大学化工学院化学工程研究所,天津市膜科学与海水淡化技术重点实验室,化学工程联合国家重点实验室 (天津大学),天津化学化工协同创新中心,天津 300350
  • 通讯作者: 王志
  • 作者简介:杜娇(1995—),女,硕士研究生,1182438019@qq.com
  • 基金资助:
    国家自然科学基金面上项目(91534124)

Abstract:

Reverse osmosis (RO) membrane separation technology has become an effective means to solve the shortage of water resources at this stage due to its high efficiency, low consumption and high quality of produced water. Further improving the permseletivity of reverse osmosis membranes is conducive to reducing operating costs and improving water quality. Therefore, the preparation of RO membranes with high permseletivity has always been the focus of research in the field of membranes. In this paper, the research on improving the permseletivity of RO membranes by optimizing the interfacial polymerization process, developing new membrane-preparing technologies, and optimizing the supports in recent years are reviewed. The structure and property of the selective layer can be directly changed by optimizing the interfacial polymerization process and developing new membrane-preparing technologies. The reasonable adjustment in the pore size, porosity, and hydrophobicity of the support can also optimize the structure and properties of the selective layer, thereby improving the performance of the RO membranes. Finally, the research directions and development prospect for preparing reverse osmosis membranes with high permseletivity are summarized and prospected.

Key words: reverse osmosis, membrane, permselectivity, polyamide selective layer, nanomaterials, polymers

摘要:

反渗透(RO)膜分离技术由于具有高效、低耗和产水水质高等优点,已成为现阶段解决水资源短缺的有效手段。进一步提高RO膜的选择透过性能有利于降低产水成本和提高产水质量,因此制备高选择透过性能的RO膜一直是膜领域研究的重点。从优化界面聚合工艺、优化基膜及开发新型制膜工艺三方面对近年来改善RO膜选择透过性能的研究进行了综述。通过优化界面聚合工艺和开发新型制膜工艺可以直接改变分离层的结构和性质,通过调节基膜的孔径、孔隙率及亲疏水性可以影响分离层的结构,从而改善RO膜的性能。最后对制备高选择透过性能的反渗透膜的研究方向与发展前景进行了总结与展望。

关键词: 反渗透, 膜, 选择透过性, 聚酰胺分离层, 纳米材料, 聚合物

CLC Number: