SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2016, Vol. 24 ›› Issue (1): 23-30.DOI: 10.1016/j.cjche.2015.06.018

• 第25届中国过程控制会议专栏 • 上一篇    下一篇

Multi-functional forward osmosis draw solutes for seawater desalination

Dieling Zhao, Shucheng Chen, Chun Xian Guo, Qipeng Zhao, Xianmao Lu   

  1. Department of Chemical & Biomolecular Engineering, National University of Singapore, Singapore 117585, Singapore
  • 收稿日期:2014-10-14 修回日期:2015-05-21 出版日期:2016-01-28 发布日期:2016-02-23
  • 通讯作者: Xianmao Lu
  • 基金资助:

    Supported by the National Research Foundation-Prime Minister's office, Republic of Singapore (Grant# R-279-000-337-281).

Multi-functional forward osmosis draw solutes for seawater desalination

Dieling Zhao, Shucheng Chen, Chun Xian Guo, Qipeng Zhao, Xianmao Lu   

  1. Department of Chemical & Biomolecular Engineering, National University of Singapore, Singapore 117585, Singapore
  • Received:2014-10-14 Revised:2015-05-21 Online:2016-01-28 Published:2016-02-23
  • Contact: Xianmao Lu
  • Supported by:

    Supported by the National Research Foundation-Prime Minister's office, Republic of Singapore (Grant# R-279-000-337-281).

摘要: Forward osmosis (FO), as one of the emerging desalination technologies, has the potential to produce freshwater from a variety of water sources by utilizing the osmotic pressure gradient across a semi-permeable membrane. Drawsolution, as an essential component of any FO process, can extract watermolecules fromseawater orwastewater. An ideal draw solution should meet three essential requirements, namely high osmotic pressure, low reverse flux, and facile regeneration mechanism. The selection of proper draw solutes is especially critical for an energy-efficient FO process since the energy consumption mostly arises from the separation or regeneration of the draw solution. Recently, we developed a few multi-functional FO draw solutes, mainly aiming to enhance the FO water flux and to explore facile re-concentration methods. This review summarizes these draw solutes, including Na+-functionalized carbon quantum dots, thermoresponsive copolymers, hydrophilic magnetic nanoparticles, and thermoresponsive magnetic nanoparticles.

关键词: Forward osmosis, Draw solution, Seawater desalination, Stimuli-responsive

Abstract: Forward osmosis (FO), as one of the emerging desalination technologies, has the potential to produce freshwater from a variety of water sources by utilizing the osmotic pressure gradient across a semi-permeable membrane. Drawsolution, as an essential component of any FO process, can extract watermolecules fromseawater orwastewater. An ideal draw solution should meet three essential requirements, namely high osmotic pressure, low reverse flux, and facile regeneration mechanism. The selection of proper draw solutes is especially critical for an energy-efficient FO process since the energy consumption mostly arises from the separation or regeneration of the draw solution. Recently, we developed a few multi-functional FO draw solutes, mainly aiming to enhance the FO water flux and to explore facile re-concentration methods. This review summarizes these draw solutes, including Na+-functionalized carbon quantum dots, thermoresponsive copolymers, hydrophilic magnetic nanoparticles, and thermoresponsive magnetic nanoparticles.

Key words: Forward osmosis, Draw solution, Seawater desalination, Stimuli-responsive