Abstract：With the hydroxyl radicals generated by Fenton reagent as the oxidant, complicated experimental researches of oxidative degradation coal-mine gas by Fenton reaction were carried on in a self-designed bubbling reactor.The influences of reaction time, H2O2 concentration, dosage of Fe2+ and initial pH value were investigated respectively.The influences of above factors were also studied by designing the orthogonal experiments.The experimental results show that Fenton reaction can decompose coal-mine gas under a certain reaction condition.Coal-mine gas removal efficiency of 25% was achieved under optimal reaction conditions of 100 mmol/L H2O2, 2.0 mmol/L ferrous ion, and initial pH value of 2.5 after 30 min.

Keyword：coal-ming gas;Fenton reagent;hydroxyl radicals;oxidative degradation;