Treatment of H2S in mine water using Fenton reagent
Abstract：In order to eliminate hidden danger caused by H2S in the coal mine,Fenton reagent was used to treat H2S in the mine water.In this study,the effects of H2O2 dosage,FeSO4·7H2O dosage,pH,reaction time,rotation speed,reaction temperature on the treatment efficiency were researched.In addition,the study investigated the kinetics of removing hydrogen sulfide using Fenton reagent.The results show that the optimum dosage of Fenton reagent is 0.67 g/L FeSO4·7H2O+0.67 mL/L H2O2,the suitable pH is 6-10,the optimum flow disturbance intensity is 160 r/min of bed rotation speed,and 25 ℃ for 10 min.Under optimal conditions,when the initial concentration of hydrogen sulfide is 140 mg/L,the removal rate of hydrogen sulfide can reach 93.14% and the concentration of residual hydrogen sulfide in water is only 2.381 mg/L.The process of the removing reaction of H2S by Fenton reagent can be described to be the quasi-second order kinetics.
Keywords：mine waterH2SFenton reagentkinetics
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 1760-1764 )