通过催化氧化去除砷（iii）以及铁（iii）沉淀。
As(iii) removal through catalytic oxidation and Fe(iii) precipitation.
作者信息
Oshima Kazumasa, Kondo Hiromichi, Konishi Eriko, Yamamoto Tsuyoshi, Tsuge Yoshifumi, Watanabe Takayuki, Kishida Masahiro
机构信息
Department of Chemical Engineering, Graduate School of Engineering, Kyushu University Motooka 744, Nishi-ku Fukuoka 819-0395 Japan
出版信息
RSC Adv. 2022 Jun 7;12(26):16843-16846. doi: 10.1039/d2ra02537j. eCollection 2022 Jun 1.
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/SiO catalyst functioned as a reaction site for As(iii) with oxygen in the atmosphere. The combination of the Pt/SiO catalyst and Fe(iii) precipitant improved the removal of As(iii) in the precipitate; Pt/SiO worked as both an As(iii) oxidation site and precipitation site with Fe(iii) precipitant.
为了有效去除废水中的亚砷酸盐（As(iii)），研究了将As(iii)催化氧化为砷酸盐（As(v)）以及As(v)与铁离子（Fe(iii)）沉淀的过程。Pt/SiO催化剂作为As(iii)与大气中氧气的反应位点。Pt/SiO催化剂和Fe(iii)沉淀剂的组合提高了沉淀物中As(iii)的去除率；Pt/SiO既作为As(iii)的氧化位点，又作为与Fe(iii)沉淀剂的沉淀位点。
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