Removal of NO was studied in a lab-scale bubbling reactor. Effects of operation parameters such as pH value, H(2)O(2) concentration, NO inlet concentration and reaction temperature on NO removal efficiency were investigated. The operation parameters included 250-1000 ppm NO, 0.5-1.5 mol/L H(2)O(2), FeSO(4) 0.05 mol/L, 2-6 pH, 25-70 degrees C. As can be seen from the experimental results, pH value had a great impact on NO removal efficiency. The experimental results indicated that the gas-liquid reaction between NO and Fenton reagent solution was liquid-film controlled as NO inlet concentration exceeded 600 ppm. And NO removal efficiency decreased with increasing reaction temperature. (C) 2011 Elsevier Ltd. All rights reserved.