合成Si‐Fe‐Mg系複合含水酸化物のイオン吸着特性

書誌事項

タイトル別名
  • Adsorption Properties of Synthetic Si-Fe-Mg Mixed Hydrous Oxides
  • 合成Si-Fe-Mg系複合含水酸化物のイオン吸着特性
  • ゴウセイ Si Fe Mgケイ フクゴウ ガンスイ サンカブツ ノ イオン キュウチャク トクセイ

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抄録

The hydrous oxides of metallic elements adsorb ions. In this study, ten Si-Fe-Mg mixed hydrous oxide samples were synthesized using various Si, Fe (III) and Mg molar ratios, and the adsorption properties of these samples were evaluated in terms of ion adsorption rate. The adsorption rate was high for most samples, and uptake occurred at the adsorption equilibrium for 24 hours. In particular, sample No. 10, for which the molar ratio of the metallic elements was Si : Fe : Mg = 0.1 : 0.1 : 0.8, which is the ratio with the highest of Mg, had adsorbed large amounts of arsenite and phosphate ions. The adsorption isotherms for fluorine, boron, arsenate, arsenite, phosphate, selenate and selenite ions had various various correspondences to the equation of Freundlich. Because the gradient of the equations was 0.1 - 0.5, sample No. 10 could adsorb from low and high concentrations of harmful ions easily.

収録刊行物

  • 水環境学会誌

    水環境学会誌 30 (3), 133-138, 2007

    公益社団法人 日本水環境学会

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