论文信息 - Degradation of Organic Pollutants by the Photo‐Fenton‐Process

Degradation of Organic Pollutants by the Photo‐Fenton‐Process

The Photo-Fenton-Process utilizing the combinations Fe(II)/H 2 O 2 /UVA and Fe(III) oxalate/H 2 O 2 /UVA was employed with success to degrade biorefractory organic pollutants in landfill leachate. The rate of degradation of the organic pollutants depends on the concentrations of hydrogen peroxide and the iron catalyst, the pH value and the concentration of dissolved oxygen. A comparison of the Photo-Fenton-Process with the H 2 O 2 /Fe(II) process and the H 2 O 2 /UVC process shows that the Photo-Fenton-Process gives a higher COD degradation and a reduced energy consumption of at least 30% compared to the H 2 O 2 /UVC process. By using photogenerated Fe(II) the amount of the iron catalyst required and the volume of sludge produced are strongly reduced.

Soo-Myung Kim | Alfons Vogelpohl | A. Vogelpohl | Soo-Myung Kim

[1] H. Fenton,et al. LXXIII.—Oxidation of tartaric acid in presence of iron , 1894 .

[2] G. Buxton,et al. Critical Review of rate constants for reactions of hydrated electrons, hydrogen atoms and hydroxyl radicals (⋅OH/⋅O− in Aqueous Solution , 1988 .

[3] B. Faust,et al. Photolysis of Fe (III)-hydroxy complexes as sources of OH radicals in clouds, fog and rain , 1990 .

[4] Dirk Weichgrebe,et al. A comparative study of wastewater treatment by chemical wet oxidation , 1994 .

[5] H. Shu,et al. The reaction kinetics, decomposition pathways and intermediate formations of phenol in ozonation, UVO3 and UVH2O2 processes , 1995 .

[6] R. J. Knight,et al. Spectrophotometric investigation of iron(III) hydrolysis in light and heavy water at 25°C , 1975 .

[7] C. Walling. Fenton's reagent revisited , 1975 .

[8] Yuegang Zuo,et al. Formation of hydrogen peroxide and depletion of oxalic acid in atmospheric water by photolysis of iron(III)-oxalato complexes , 1992 .

[9] C. Langford,et al. The Charge Transfer Photochemistry of the Hexaaquoiron(III) Ion, the Chloropentaaquoiron(III) Ion, and the µ-Dihydroxo Dimer Explored with tert-Butyl Alcohol Scavenging , 1975 .

[10] William H. Glaze,et al. The Chemistry of Water Treatment Processes Involving Ozone, Hydrogen Peroxide and Ultraviolet Radiation , 1987 .

[11] David L. Sedlak,et al. Oxidation of chlorobenzene with fenton's reagent , 1991 .