Uptake of selenite from solution on magnesium oxide

DOI

Bibliographic Information

Other Title
  • 酸化マグネシウムによる水溶液中からの亜セレン酸の除去

Abstract

Selenium is toxic element. Selenium exists selenate(SeO42-) or selenite(SeO32-) in solution. Magnesium oxide(MgO) is metastable phase, converts to brucite(Mg(OH)2) or hydromagnesite in aqueous solution. MgO has very high sorption capacity of arsenite in solution(Liu et al. 2011). Sorption experiments were conducted with 2μM of selenite and 0.01M of NaCl, 2g/L of material loading for 3-60h. Suspension were measured pH, liquid phase were measured Mg,Ca and Se concentration and mineral phase of solid were identified at each time. MgO showed efficient removal of selenite. We considered that sorption mechanism in this case is probable coprecipitation process during MgO convert to Mg(OH)2.

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Details 詳細情報について

  • CRID
    1390283659839850368
  • NII Article ID
    130007785294
  • DOI
    10.14824/jakoka.2015.0_138
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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