Reaction Kinetics of Decomposition of Acidic Sodium Chlorite

Abstract

The decomposition of sodium chlorite was studied in a well‐stirred reactor in a pH range of 2—3 and a temperature range of 15—35°C varying the chlorite concentration. The reaction rate was evaluated by analyzing the consumption of chlorite iodometrically. The rate law was established. Reaction was found to be of the first order with respect to both chlorite and acid concentration. Temperature dependence of the reaction was also studied and pre‐exponential Arrehenius parameter and activation energy were determined. The optimum conditions to generate chlorine dioxide from sodium chlorite are also highlighted.

Removal of 1,2,4-TCB from Flue Gas by Aqueous Chlorine-Dioxide Scrubbing

“…Chlorine-dioxide is produced from acid solutions of sodium chlorite [12][13][14]. Most of the small and medium scale generators use sodium chlorite as the precursor material, due to the conditions for the production of ClO 2 from sodium chlorite can be controlled better than from other material.…”

Removal of NO from flue gas by aqueous chlorine-dioxide scrubbing solution in a lab-scale bubbling reactor

“…Chlorine-dioxide is produced from acid solutions of either sodium chlorite [2][3][4] or sodium chlorate [5][6][7][8][9][10]. Most of the small and medium scale generators use sodium chlorite as the precursor material.…”

Simultaneous removal of SO2 and NO by wet scrubbing using aqueous chlorine dioxide solution

“…Chlorine dioxide is always generated on-site because of its unstable nature and risk of rapid decomposition. It can be produced from acid solutions of either sodium chlorite [22][23][24][25][26][27] or sodium chlorate [28][29][30][31][32][33][34][35]. Most of the small-scale generators use sodium chlorite as the precursor material.…”