Research progress in oxidation of arsenic(Ⅲ) in water

doi:10. 11894/1005-829x. 2013. 33(9). 15

Abstract

Abstract:

Since the direct removal of As(Ⅲ) from aqueous solution is rather difficult, than the removal of As(Ⅴ). Therefore, in the course of treatment, an effective way is that As(Ⅲ) has to be oxidized to As(Ⅴ) prior to its removal. The theory and research progress of the direct oxidation(i.e.oxidizer oxidation) and indirect oxidation (i.e.advanced oxidation process) of aqueous As(Ⅲ) are viewed in detail. The direct oxidation of As(Ⅲ) mainly includes H₂O₂ oxidation, manganese oxidation, iron and its oxides oxidation, chlorine oxides oxidation. The advanced indirect oxidation of As(Ⅲ) includes TiO₂ photocatalytic oxidation, electro-catalytic oxidation, ultrasonic oxidation and persulfate oxidation. At the end, the developing direction of As(Ⅲ) oxidation is forecast.

Key words: arsenic, oxidant, direct oxidation, advanced oxidation

摘要：

由于水中As(Ⅲ)的直接去除较难, 处理过程中多将As(Ⅲ)氧化成As(Ⅴ)后进行去除。重点介绍了水中As(Ⅲ)的两类氧化法(氧化剂直接氧化法和高级氧化法)的原理和研究进展。其中氧化剂直接氧化法中主要介绍了H₂O₂、锰氧化物、铁及其氧化物和氯氧化物等氧化剂;高级氧化间接氧化法中主要介绍了TiO₂光催化氧化、电催化氧化、超声波氧化和过硫酸盐氧化。最后, 对As(Ⅲ)氧化的发展方向进行了展望。

关键词: 砷, 氧化剂, 直接氧化, 高级氧化

CLC Number:

X703. 1

Liu Guifang, Yu Shufang, Wang Chunli, Ren Zhijun, Li Jia, Sun Yaquan, Gao Yuan. Research progress in oxidation of arsenic(Ⅲ) in water[J]. INDUSTRIAL WATER TREATMENT, 2013, 33(9): 15-19.

刘桂芳, 于树芳, 王春丽, 任芝军, 李嘉, 孙亚全, 高远. 水中As(Ⅲ)氧化的研究进展[J]. 工业水处理, 2013, 33(9): 15-19.

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