陽電荷型磁性凝集核の製造に関する基礎的研究 Production of Cationic Magnetic Solid Flocculant

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著者

    • 大木 達也 OKI Tatsuya
    • 資源環境技術総合研究所素材資源部素材プロセス研究室 Materials Processing Department, National Institute for Resources and Environment
    • 四元 弘毅 YOTSUMOTO Hiroki
    • 資源環境技術総合研究所素材資源部素材プロセス研究室 Materials Processing Department, National Institute for Resources and Environment

抄録

"Magnetic solid flocculant" (MSF) is a new type flocculant with high magnetic intensity and high positive charge which is useful for the flocculation of fine particles in suspension. The MSF prepared by adsorbing cationic polyelectrolytes to the surface of magnetite particles have abilities to capture fine particles by electrostatic force in a wide pH range and to recover the flocs quickly by magnetic force without changing liquid property. In this study, four kinds of cationic polyelectrolytes are used in preparing MSF and the optimum condition of MSF production is investigated. For all cases, higher pH (especially above pH 7) during polyelectrolytes adsorption gives MSF higher surface potential, and higher polyelectrolyte concentration gives better MSF dispersion. It is observed that three kinds of polyelectrolytes above 300,000 of molecular weight do not detach from a magnetite surface even after several washings. This result indicates that the MSF keeps stable high surface potential and, therefore, can be used repeatedly. Among the four kinds polyelectrolytes used in this study, polyethyleneimine type (molecular weight: 300,000) is the best for MSF production. The optimum condition is as follows; polyelectrolytes concentration: 1,000 ppm, adsorption pH: pH 8, washing after adsorption: 3 times. The MSF produced under optimum condition has large positive potential of around 40 mV in 10-3mol/l NaCl solution in a wide pH range.

収録刊行物

  • 資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan

    資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan 114(13), 959-964, 1998-12-25

    The Mining and Materials Processing Institute of Japan

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各種コード

  • NII論文ID(NAID)
    10002468804
  • NII書誌ID(NCID)
    AN10062646
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    09161740
  • NDL 記事登録ID
    4630887
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-315
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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