Effect of calcination temperature on Mg-Al bimetallic oxides as sorbents for the removal of F- in aqueous solutions

Sayo Moriyama, Keiko Sasaki, Tsuyoshi Hirajima

研究成果: Contribution to journalArticle査読

27 被引用数 (Scopus)

抄録

Bimetallic oxides were synthesized from hydrotalcite using increasing calcination temperatures (873, 1073, 1273K). These bimetallic oxides were fully characterized and the sorption density of F- was investigated. X-ray diffraction patterns for the produced bimetallic oxides showed that MgO was the primary phase within the range of investigated calcination temperatures, but MgO crystallinity increased with calcination temperature and an additional MgAl2O4 phase was formed. In the process of F- sorption, the bimetallic oxides were primarily transformed into hydrotalcite with intercalation of F-.The Higher calcination temperature increased the MgAl2O4 phase, which did not contribute to the immobilization of F-. These findings show that optimizing the calcination temperature can be used to maximize the sorption density of this material for F- removal.

本文言語英語
ページ(範囲)597-603
ページ数7
ジャーナルChemosphere
95
DOI
出版ステータス出版済み - 1 2014

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Chemistry(all)
  • Pollution
  • Health, Toxicology and Mutagenesis

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