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    Hybrid Pressure Retarded Osmosis−Membrane Distillation (PRO−MD) Process for Osmotic Power and Clean Water Generation

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    C5EW00127G.pdf
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    Type
    Article
    Authors
    Han, Gang
    Zuo, Jian
    Wan, Chunfeng
    Chung, Neal Tai-Shung cc
    KAUST Department
    Water Desalination and Reuse Research Center (WDRC)
    Date
    2015
    Permanent link to this record
    http://hdl.handle.net/10754/555747
    
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    Abstract
    A novel pressure retarded osmosis−membrane distillation (PRO−MD) hybrid process has been experimentally conceived for sustainable production of renewable osmotic power and clean water from various waters. The proposed PRO−MD system may possess unique advantages of high water recovery rate, huge osmotic power generation, well controlled membrane fouling, and minimal environmental impacts. Experimental results show that the PRO−MD hybrid process is promising that not only can harvest osmotic energy from freshwater but also from wastewater. When employing a 2 M NaCl MD concentrate as the draw solution, ultrahigh power densities of 31.0 W/m2 and 9.3 W/m2 have been demonstrated by the PRO subsystem using deionized water and real wastewater brine as the feeds, respectively. Simultaneously, high purity potable water with a flux of 32.5−63.1 L/(m2.h) can be produced by the MD subsystem at 40−60 °C without any detrimental effects of fouling. The energy consumption in the MD subsystem might be further reduced by applying a heat exchanger in the hybrid system and using low-grade heat or solar energy to heat up the feed solution. The newly developed PRO−MD hybrid process would provide insightful guidelines for the exploration of alternative green technologies for renewable osmotic energy and clean water production.
    Citation
    Hybrid Pressure Retarded Osmosis−Membrane Distillation (PRO−MD) Process for Osmotic Power and Clean Water Generation 2015 Environ. Sci.: Water Res. Technol.
    Publisher
    Royal Society of Chemistry (RSC)
    Journal
    Environ. Sci.: Water Res. Technol.
    DOI
    10.1039/C5EW00127G
    Additional Links
    http://pubs.rsc.org/en/Content/ArticleLanding/2015/EW/C5EW00127G
    ae974a485f413a2113503eed53cd6c53
    10.1039/C5EW00127G
    Scopus Count
    Collections
    Articles; Water Desalination and Reuse Research Center (WDRC); Water Desalination and Reuse Research Center (WDRC)

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