발간논문

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Vol.28, No.10, 911 ~ 917, 1990
Title
A Study on the Oxidation Reaction of As (3) in HNO3 Solution
박경호Kyung Ho Park, 홍성웅Seong Woong Hong, 이효숙Hyo Sook Lee, 김치권Chi Kwon Kim
Abstract
The effects of various factors on the oxidation reactions of As(Ⅲ) in HNO₃, solution were investigated. The oxidation rate of As(Ⅲ) was increased with the addition of HCl as a catalyst and also with the formation of NO₂ gas, while it was decreased with the addition of O₂ due to the expulsion of NO₂ gas dissolved in the solution. The oxidation rate of As(Ⅲ) in HNO₃ solution could be expressed as the following equation at 7N HNO₃ and 75℃ : - d〔As(Ⅲ)〕/dt=K〔HCI〕 {0.0277+0.0116 〔As(Ⅲ)_o-As(Ⅲ)〕^(0.5)} 〔As(Ⅲ)〕^(0.5).
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