The Effect of pH on Activation of Sodium Chlorite
- VernacularTitle:pH值对亚氯酸钠活化效果的影响
- Author:
Guoqing CHEN
;
Qiong CHEN
- Publication Type:Journal Article
- Keywords:
Water;
Disinfection;
Chlorine dioxide
- From:
Journal of Environment and Health
1989;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the effect of different pH values on activation of sodium chlorite. Methods After activated sodium chlorite by different concentration of hydrochloric acid, differentiate determination was used to determine the concentration of chlorine dioxide and other chlorine species produced at different times. Results The activation rates of chlorine dioxide increased as concentration of hydrochloric acid gradually increased, that showed a dose-response manner. When concentration of hydrochloric acid were 9.6, 10 and 10.3 mol/L, the pH value reached 0.47, 0.39 and 0.26, respectively, the activation rate reached the peak value at 10 min (activation rate was 98.8%), 8 min (97.1%) and 5 min (99.2%) respectively. Conclusion The activation rate of chlorine dioxide is related to pH. When pH value is less than 0.5,the activation rate of chlorine dioxide is higher. The lower the pH value is,the higher the activation rate of chlorine dioxide is and more early the peak value appears.
