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As(iii) removal through catalytic oxidation and Fe(iii) precipitation.

ABSTRACT: To remove arsenite (As(iii)) from wastewater effectively, the catalytic oxidation of As(iii) to arsenate (As(v)) and As(v) precipitation with iron ions (Fe(iii)) was investigated. The Pt/SiO₂ catalyst functioned as a reaction site for As(iii) with oxygen in the atmosphere. The combination of the Pt/SiO₂ catalyst and Fe(iii) precipitant improved the removal of As(iii) in the precipitate; Pt/SiO₂ worked as both an As(iii) oxidation site and precipitation site with Fe(iii) precipitant.

SUBMITTER: Oshima K

PROVIDER: S-EPMC9171746 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature

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As(iii) removal through catalytic oxidation and Fe(iii) precipitation.

Oshima Kazumasa K Kondo Hiromichi H Konishi Eriko E Yamamoto Tsuyoshi T Tsuge Yoshifumi Y Watanabe Takayuki T Kishida Masahiro M

RSC advances 20220607 26

To remove arsenite (As(iii)) from wastewater effectively, the catalytic oxidation of As(iii) to arsenate (As(v)) and As(v) precipitation with iron ions (Fe(iii)) was investigated. The Pt/SiO2 catalyst functioned as a reaction site for As(iii) with oxygen in the atmosphere. The combination of the Pt/SiO2 catalyst and Fe(iii) precipitant improved the removal of As(iii) in the precipitate; Pt/SiO2 worked as both an As(iii) oxidation site and precipitation site with ...[more]

PMID: 35754909

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