| Title |
A Study on the Oxidation Reaction of As (3) in HNO3 Solution |
| Authors |
박경호(Kyung Ho Park); 홍성웅(Seong Woong Hong); 이효숙(Hyo Sook Lee); 김치권(Chi 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). |