Ji Chun-hua
2012
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0
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Journal
Journal of Anhui Agricultural Sciences
Abstract
[Objective] The research aimed to study the optimum technological conditions of 1,4-dihydroxybenzene degradation by UV/Fenton oxidation and its kinetics.[Method] UV/Fenton oxidation was used to treat the simulated wastewater of 1,4-dihydroxybenzene.The influences of nH2O2∶ nFe2+,reaction time,H2O2 dosage,initial pH and UV light intensity on degradation effect of 1,4-dihydroxybenzene were inspected.Moreover,the kinetics rule of 1,4-dihydroxybenzene degradation was discussed initially.[Result] The optimum technological conditions of 1,4-dihydroxybenzene degradation by UV/Fenton oxidation: nH2O2∶ nFe2+ was 5∶ 1,reaction time was 60 min,H2O2 dosage was 3.5 ml/L,initial pH was 3,and UV light intensity was 500 W.Under the condition,the removal ratios of 1 000 mg/L of 1,4-dihydroxybenzene COD and concentration respectively reached 93.19% and 87.75%.UV radiation and Fenton oxidation had synergistic effect on 1,4-dihydroxybenzene degradation.1,4-dihydroxybenzene degradation by UV/Fenton oxidation corresponded with pseudo-first-order reaction kinetics equation.The apparent speed constant was 0.005 1 min-1.[Conclusion] The research provided new channel for treatment of 1,4-dihydroxybenzene pollution.