Catalytic wet peroxide oxidation of p-nitrophenol by Fe (III) supported on resin.
Fe(III) supported on resin (Fe(III)-resin) as an effective catalyst for peroxide oxidation was prepared and applied for the degradation of p-nitrophenol (PNP). Catalytic wet peroxide oxidation (CWPO) experiments with hydrogen peroxide as oxidant were performed in a batch rector with p-nitrophenol as the model pollutant. Under given conditions (PNP concentration 500 mg/L, H(2)O(2) 0.1 M, 80°C, resin dosage 0.6% g/mL), p-nitrophenol was almost completely removed, corresponding to an 84% of COD removal. It was found that the reaction temperature, oxidant concentration. and initial pH of solution significantly affected both p-nitrophenol conversion and COD removal by oxidation. It can be inferred from the experiments that Fe(III) supported on resin was an effective catalyst in the mineralization of p-nitrophenol. In an acidic environment of oxidation, the leaching test showed that there was only a slight leaching effect on the activity of catalytic oxidation. It was also confirmed by the aging test of catalysts in the oxidation.
Department of Environmental Engineering and Science, Chia-Nan University of Pharmacy and Science, Tainan 717, Chinese Taiwan. mrmliou@mail.chna.edu.tw
Rey-May
RM
Liou
Shih-Hsiung
SH
Chen
Cheng-Hsien
CH
Huang
Cheng-Lee
CL
Lai
C Y
CY
Shih
Jing-Song
JS
Chang
Mu-Ya
MY
Hung
D057919:Biological Oxygen Demand Analysis; D002384:Catalysis; D002411:Cation Exchange Resins / Q000737:chemistry*; D002712:Chlorides / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D008855:Microscopy, Electron, Scanning; D009596:Nitrophenols / Q000032:analysis*; D010084:Oxidation-Reduction; D013499:Surface Properties; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000379:methods*
D002411:Cation Exchange Resins; D002712:Chlorides; D005290:Ferric Compounds; D009596:Nitrophenols; D014874:Water Pollutants, Chemical; D006861:Hydrogen Peroxide; C024555:ferric chloride; C024836:4-nitrophenol