Reaction performance study on denitration in aqueous solution of the dual oxidant (H2O2/S2O82-)

The reaction performance study on NO removal by using the dual oxidant (H2O2/S-2 O82-) solution was carried out in self-designed bubbling reactor. The experimental results showed that NO removal efficiency was up to 92.9% at pH 11. The results of the thermodynamics calculation verified that NO removal by using strong alkaline dual oxidant (H2O2/S(2)O82-) solution was feasible. The results of the kinetic study showed that the reaction between NO and dual oxidant (H2O2/S(2)O82-) in strong alkaline condition was found to be 1.5-order with respect to NO, and the average activation energy of this reaction was 26.32 kJmol(-1) in the quick-reaction zone. The ion chromatography (IC) analysis results in strong alkaline condition showed that NO3- and SO42- were the final ionic product in spent reaction solution. This dual oxidant (H2O2/S(2)O82-) was a promising oxidant for the simultaneous wet removal of NO and SO2 with high efficiency, no secondary pollution and low cost. (c) 2016 American Institute of Chemical Engineers Environ Prog, 35: 1361-1366, 2016