CHARACTERISTICS OF SEPARATION OF CARNITINE AND METAL IONS IN CHEESE WHEY MODEL SOLUTION BY LOOSE REVERSE OSMOSIS MEMBRANE

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Aiming at recovering carnitine from cheese whey by using loose reverse osmosis membranes, rejection characteristics of several components in the whey were examined by using model solutions. An electroneutral membrane was found to be most effective for the separation. The rejection of carnitine was above 0.95 independent of the pH of solutions, while monovalent metal ions showed low rejections of 0.1–0.3. On the other hand, the rejections of divalent metal ions decreased with increase of the pH, and reached a minimum of about 0.5. As a result, mono- and divalent metal ions could be removed simultaneously by adjusting the pH of the feed solutions. To clarify the effect of pH on the rejection, the permeate of MgCl<SUB>2</SUB> aqueous solution was examined. The rejections of MgCl<SUB>2</SUB> were greatly affected by the pH and showed the same tendency as the mixed solution. The effect of the pH on permeation of electrolyte was considered to be caused mainly by the adsorption of ions on the membrane.

収録刊行物

  • Journal of chemical engineering of Japan

    Journal of chemical engineering of Japan 29(2), 289-293, 1996-04-20

    The Society of Chemical Engineers, Japan

参考文献:  16件中 1-16件 を表示

被引用文献:  1件中 1-1件 を表示

各種コード

  • NII論文ID(NAID)
    10003814054
  • NII書誌ID(NCID)
    AA00709658
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00219592
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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