FO膜を用いた水処理技術  [in Japanese] Forward Osmosis Membrane as a Novel Water Treatment Technology  [in Japanese]

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Author(s)

    • 比嘉 充 HIGA Mitsuru
    • 山口大学大学院 理工学研究科 物質化学専攻 精密化学 機能性高分子工学 Applied Fine Chemistry, Graduate School of Science and Engineering, Yamaguchi University

Abstract

Reverse osmosis (RO) is one of the most effective and robust technologies for seawater desalination and wastewater reuse. However, RO uses so huge energy to produce fresh water that the high water production cost is one of the problems for RO process. There has been a growing interest in forward osmosis (FO). The FO process utilizes an osmotic pressure gradient generated by a highly concentrated solution (Draw Solution: DS) to allow water to diffuse through a semi-permeable membrane from a saline feed water (Feed Solution: FS), which has a relatively lower concentration than DS. A FO process consists of FO membranes, FO membrane modules, DS and a DS regeneration system. One of the primary obstacles hindering further development of FO processes is the lack of a suitable membrane designed specifically for osmotically driven membrane processes. A FO membrane requires high water permeability, low solute permeability and low structural parameter to reduce internal concentration polarization inside the membrane support layer. FO processes have potential applications to many desalination fields, such as landfill leachate, oil & gas wastewater, osmotic MBR, wastewater concentration, seawater desalination and pressure retarded osmosis.

Journal

  • MEMBRANE

    MEMBRANE 37(5), 224-229, 2012-09-01

    THE MEMBRANE SOCIETY OF JAPAN

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Codes

  • NII Article ID (NAID)
    10031123517
  • NII NACSIS-CAT ID (NCID)
    AN0023215X
  • Text Lang
    JPN
  • Article Type
    REV
  • ISSN
    03851036
  • NDL Article ID
    024017634
  • NDL Call No.
    Z18-1127
  • Data Source
    CJP  NDL  J-STAGE 
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