ニッケル含有廃液のフェライト化処理によって生成するスラッジの安定化  [in Japanese] Stabilizing of Sludge Produced by Ferrite Process Treatment of Wastewater Containing Nickel Ion  [in Japanese]

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Abstract

The saturated magnetization σ(emu·g<sup>-1</sup>) was measured for the ferrite sludge formed by two-step treatment with pH adjustment of wastewater containing nickel sulfate. Simultaneously, the concentration of nickel and iron ions in the treated water was measured. The effect of pH adjustment on the above parameters was quantitatively discussed by comparing the two different treatments: conventional and two-step treatments.<br>The <i>σ</i> of ferrite sludge formed by the two-step treatment with pH adjustment was slightly larger than that by conventional and two-step treatments. XPS measurement of the sludge formed by conventional and two-step treatment with pH adjustment indicated the existence of Ni(OH)<sub>2</sub> on the surface of ferrite particles. The measurement after Xe<sup>+</sup> sputtering showed that the Ni(OH)<sub>2</sub> is present not only on the surface but also in the bulk of the particles formed by conventional treatment. In leached test, the concentration of nickel ion in the elute was lower in order of conventional, two-step and two-step treatment with pH adjustment in relation to Ni(OH)<sub>2</sub> on the surface of ferrite particles.<br>The two-step treatment with pH adjustment stabilizes the sludge and is favorable for steady operation of the ferrite process, industrial utilization of the sludge and good quality of the treated water.

Journal

  • Journal of Japan Society on Water Environment

    Journal of Japan Society on Water Environment 24(12), 850-855, 2001-12-10

    Japan Society on Water Environment

References:  22

Cited by:  1

Codes

  • NII Article ID (NAID)
    10008006173
  • NII NACSIS-CAT ID (NCID)
    AN10372439
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    09168958
  • NDL Article ID
    6007361
  • NDL Source Classification
    ZN5(科学技術--建設工学・建設業--都市工学・衛生工学)
  • NDL Call No.
    Z16-1045
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
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