Fenton(Fluidized-Bed Fenton Oxidation Technology)Fenton(Fered-Fenton Oxidation Process Technology)

Fenton (Description of Fenton Technology)Fenton1894FentonFe2+H2O2, OHCOD

Eo,V

1

Fluorine

F2(g)2H+2e2HF(aq)

3.06

2

Hydroxy radical

HOH+e-H2O

2.83

3

Ozone

O32H+2e-O2H2O

2.07

4

Hydrogen peroxide

H2O22H+2e-2H2O

1.78

5

Chlorine

Cl2(g)2e-2Cl-

1.36

6

Hypochloride

ClO-H2O2e-Cl-2OH-

0.90

Fenton(Description of Fenton Family Technology) FentonCOD50-50,000mg/L

Fenton(Principle and Characteristic of Fenton Family Technology)

/1- Fenton- Fenton- Fenton- FentonFenton2FentonFentonFentonFentonF-Family3COD50-100050-5001000-5000050-50050-50,0004H2O2+Fe2+.OH+OH-+Fe3+ FeFe2++2e- H2O2+Fe2+ .OH +OH-+Fe3+Fe3+Fe2++e-H2O2+Fe2+ .OH+OH-+Fe3+ H2O2+Fe2+.OH + H2O+ FeOOH 5Fe()Fe(III) 80%70%

Fenton(Application of Fenton Family Technology)

Fenton(Fluidized-Bed Fenton Oxidation Technology)

Fe2+ H2O2H2O2 + Fe2+ OH + Fe(OH)2+ ... FeOOH Fenton IV(-Fenton) Fenton(Composition of Fluidized-Bed Fenton Oxidation Process)

CrystallizationH2O2FeOOHChemicaloxidationOrganiccompoundsFe 2++H2O2COD(TOC) removalFe(III) removalFBRFenton(Principle of Fluidized-Bed Fenton Oxidation Process)

Fenton ( Principle of Fenton Heterogeneous Reaction)1. path a,b,and c; 2. path d and e;3. path f,g,and h.

Fenton ( Product of Fenton Heterogeneous Reaction)FeOOH

()

ABS ABS

()

ABS

()

() () () () ()

Fenton(Fered-Fenton Oxidation Process Technology)

-Fenton (H2O2)(OH )-Fenton Cathode Fe3++e-Fe2+ Solution H2O2+Fe2+ . OH+OH-+Fe3+Fe(OH)3 -Fenton(Principle of Fenton III (Fered-Fenton) process) 80%

FentonCOD(30-90)FentonCODFe2+-Fenton-FentonFe3+Fenton10-20% -Fenton( Character of Fered-Fenton Process)

-Fenton(Composition of Fered-Fenton Process)Fenton()pHFeSO4H2O2H2SO4

(Composition of Fered-Fenton Reactor)

()()()()

*******Let me use another transparency to explain this FBR-Fenton method. There are two catalysts in the fluidized-bed reactor. Fe2+ is the homogeneous catalyst and FeOOH is the heterogeneous catalyst of H2O2 to oxidize organic compounds. The supported FeOOH acts as both the catalyst of H2O2 and the carrier of FBR for the crystallization. The iron product of Fentons reaction can crystallize and grow on the carrier surface to reduce the precipitation of Fe(OH)3, therefore, the crystallization percentage in the reactor was investigated by determining the removal of Fe(III). In this study, effects of inlet Fe2+ and pH on COD removal and iron crystallization were studied. ***********