Study on the Conditions of Oxidation of Nitrogen Dioxide and Nitrite by Manganese Dioxide

摘要: The conditions of oxidation nitrite by manganese dioxide in the solution was studied, with sodium used as sample, respectively. Experiment results showed that stronger to strong acid, but nitrous acid is instable, escaping NO2 out from solution. When pH=3.5, rate better. concentration tended forward be stable after 30min. After reaction, oxidizing power which treated dilute sulfuric wasn't enhanced. reacted fresh and effect good. process could go on would decrease obviously when react same original nitrite. Maybe some active sites exist at surface dioxide. reaction equilibrium reached, point probably have disappeared. property treat Combining two methods absorption base or dioxide, completely treatment cost lower.