PACとカゼインを用いた凝集・泡沫分離法による微細藻類の回収除去  [in Japanese] Removal of Algae by Coagulation and Foam Separation using Polyaluminum Chloride and Milk Casein  [in Japanese]

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Abstract

Coagulation foam separation with dispersed air using milk casein as a collector and a frother is an effective method to remove suspended substances in water. Harmful algae, which proliferate as outbreaks in many lakes and ponds, are considered suspended organic substances. Hence, the applicability of this method for algal removal is promising. In this study, removal of algae by coagulation and foam using polyaluminum chloride (PAC) and casein was examined.<br>Highly effective processing was achieved within 10 min by adjusting pH and dosages of PAC and casein. The most important consideration in the foam separation process is adding the proper amount of casein, which functions as both collector and frother. The removal efficiency of <i>Microcystis aeruginosa</i>, <i>Selenastram capriornutum</i>, and <i>Chlorella pyreniodosa</i> was over 97% when PAC and casein were added at a dosage of 3 mg-Al·<i>l</i><sup>-1</sup> and 15 mg·<i>l</i><sup>-1</sup>, respectively at pH 7-8. The percentage of liquid volume of collapsed foam in the total amount of algal suspension was about 2%. Approximately 100% of the added PAC and casein were recovered from the treated water. These results prove that this novel method has a high efficiency and applicability in removing algae from aquatic blooms.

Journal

  • Journal of Japan Society on Water Environment

    Journal of Japan Society on Water Environment 25(5), 297-302, 2002-05-10

    Japan Society on Water Environment

References:  23

Cited by:  2

Codes

  • NII Article ID (NAID)
    10008539277
  • NII NACSIS-CAT ID (NCID)
    AN10372439
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    09168958
  • NDL Article ID
    6131900
  • 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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