Reductive removal of selenate (VI) in aqueous solution using rhodium metal particles supported on TiO_2

DOI HANDLE Open Access
  • Oshima, Kazumasa
    Department of Chemical Engineering, Graduate School of Engineering, Kyushu University
  • Ito, Kyogo
    Department of Chemical Engineering, Graduate School of Engineering, Kyushu University
  • Konishi, Eriko
    Department of Chemical Engineering, Graduate School of Engineering, Kyushu University
  • Yamamoto, Tsuyoshi
    Department of Chemical Engineering, Graduate School of Engineering, Kyushu University
  • Fukai, Jun
    Department of Chemical Engineering, Graduate School of Engineering, Kyushu University
  • Kajiwara, Toshihisa
    Department of Chemical Engineering, Graduate School of Engineering, Kyushu University
  • Kishida, Masahiro
    Department of Chemical Engineering, Graduate School of Engineering, Kyushu University

Bibliographic Information

Other Title
  • Reductive removal of selenate (VI) in aqueous solution using rhodium metal particles supported on TiO<sub>2</sub>

Description

Selenium and its compounds in high concentration are toxic for humans, especially selenate (VI) is the most toxic due to its high solubility in water. To promote the reductive reaction of Se(VI) to Se(IV) or Se(0), which is relatively easy to remove in water, noble metal particles were added as reaction sites with a reductant. The highest removal performance of selenate in aqueous solution was achieved using rhodium particles supported on TiO_2 (Rh/TiO_2). Selenate was rapidly reduced with hydrazine on the metal particle, leading to a selenium deposition on the particle inhibiting the stable reductive reaction. On the other hand, when a weaker reductant such as formaldehyde was used for the selenate reduction, the selenium deposition was suppressed due to its low reactivity, resulting in a stable reductive reaction of selenate in water.

Journal

  • RSC Advances

    RSC Advances 12 (28), 17655-17660, 2022-06-15

    Royal Society of Chemistry (RSC)

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Details 詳細情報について

  • CRID
    1050299130033086080
  • DOI
    10.1039/d2ra02889a
  • ISSN
    20462069
  • HANDLE
    2324/7161322
  • Text Lang
    en
  • Article Type
    journal article
  • Data Source
    • IRDB
    • OpenAIRE

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