Lithium Specific Adsorption and Lithium Isotope Separation Characteristics of the Adsorbent Prepared from MgMn<SUB>2</SUB>O<SUB>4</SUB>

DOI

Bibliographic Information

Other Title
  • MgMn<SUB>2</SUB>O<SUB>4</SUB>より調製された吸着剤のリチウム選択吸着特性とそれの示すリチウム同位体効果

Abstract

Lithium-specific adsorption and lithium isotope separation characteristics were investigated on adsorbents, HMnO (Mg), prepared by treating MgMn2O4with hydrochloric acid or hydrochloric acid-ammonium peroxodisulfate ((NH4)2S2O8) mixture solution. Lithium-specific adsorption was observed for the adsorbents with the spinel structure and magnesium extractability of more than about 90%. The use of (NH4)2S2O8with an appropriate concentration may reduce the degree of manganese dissolution in acid treatments while keeping high extractability of magnesium.<BR>Lithium isotope fractionation between the adsorbent thus prepared and a supernatant in equilibrium with each other was observed. The lighter isotope, 6Li, was found to be preferentially fractionated into the adsorbent phase and the value of the single-stage separation factor minus one was 5.4-7.4×10-3at 25°C. No apparent relation was found between acid treatment conditions andthe lithium isotope effect as long as the adsorbent retained the spinel structure and had magnesium extractability more than about 90%

Journal

Details 詳細情報について

  • CRID
    1390001205452164096
  • NII Article ID
    130004675030
  • DOI
    10.11457/swsj1965.47.67
  • COI
    1:CAS:528:DyaK2cXjvFWmsA%3D%3D
  • ISSN
    03694550
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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