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Multi-functional forward osmosis draw solutes for seawater desalination

Chinese Journal of Chemical Engineering 2016年第1期24卷 23-30页

作者： dieling zhao Shucheng Chen Chun Xian Guo Qipeng zhao Xianmao Lu Department of Chemical & Biomolecular Engineering National University of Singapore

Forward osmosis(FO), as one of the emerging desalination technologies, has the potential to produce fresh water from a variety of water sources by utilizing the osmotic pressure gradient across a semi-permeable membrane.Draw solution, as an essential component of any FO process, can extract water molecules from seawater or wastewater. 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：海水淡化技术多功能溶质反渗透前向磁性纳米颗粒磁性纳米粒子高渗透压

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Emerging R&D on membranes and systems for water reuse and desalination

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Chinese Journal of Chemical Engineering 2019年第7期27卷 1578-1585页

作者： Tai-Shung Chung dieling zhao Jie Gao Kangjia Lu Chunfeng Wan Martin Weber Christian Maletzko Department of Chemical and Biomolecular Engineering National University of SingaporeSingapore 117585Singapore Advanced Materials and Systems Research BASF SERAP/OUB - B167056 LudwigshafenGermany Performance Materials BASF SEG-PMFSU-F20667056 LudwigshafenGermany

Sustainable production of clean water is a global challenge.While we firmly believe that membrane technologies are one of the most promising solutions to tackle the global water challenges,one must reduce their energy consumption and fouling propensity for broad sustainable applications.In addition,different membranes face various challenges in their specific applications during long-term operations.In this short review,we will summarize the recent progresses in emerging membrane technologies and system integration to advance and sustain water reuse and desalination with discussion on their challenges and perspectives.

关键词： Membrane technology Water reuse Desalination Hybrid system Nanomaterials

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