Oxidation and mineralisation of substituted phenols by Fenton's reagent and catalytic wet oxidation.
Catalytic abatement of solutions of 1,000 mg/L in phenol, ortho and para nitrophenol and ortho and para cresols was acomplished by using two catalytic systems. Fenton's reagent was used at 50 degrees C by adding 10 mg/L of ferrous cation and different dosages of H2O2. The mixture was reacting isothermically in a batch way during 3 hours. Catalytic wet oxidation (CWO) was carried out by using a commercial Activated Carbon, Industrial React FE01606A, CWO runs were carried out in a fixed bed reactor (FBR) with concurrent upflow. Temperature and oxygen pressure of the reactor were set to 160 degrees C and 16 bar, respectively. While phenols are quicky oxidised by the Fenton reagent higher mineralisation was obtained in the CWO process.
Dpto Ingenieria Quimica, University of Complutense Madrid, Ciudad Universitaria S/N. 28040, Madrid, Spain. aursan@quim.ucm.es
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Santos
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Rodriguez
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Garcia-Ochoa
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P
Yustos
D002384:Catalysis; D006861:Hydrogen Peroxide / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D008903:Minerals / Q000737:chemistry*; D010084:Oxidation-Reduction; D019800:Phenol / Q000737:chemistry* / Q000633:toxicity; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000633:toxicity
C045076:Fenton's reagent; D008903:Minerals; D014874:Water Pollutants, Chemical; D019800:Phenol; D006861:Hydrogen Peroxide; D007501:Iron