Abstract
The kinetics and an approach to det. the mechanism of catalytic wet air oxidn. of aq. phenol are described. Activated carbon-supported copper oxide was the catalyst. Expts. were performed in a batch spinning basket reactor at 160-200 Deg at a total pressure of 2.6-4.0 MPa. Results showed the suitability of this catalyst for phenol degrdn. The effect of important operating parameters (agitation speed, catalyst particle size, O2 partial pressure, temp., feed soln. pH) on reactor performance was studied. Results unequivocally showed the interfacial reaction was the limiting step. Proposed kinetics for phenol removal are based on the Langmuir-Hinshelwood kinetic approach. Reaction order with respect to O2 was 0.5; apparent activation energy was calcd. to be 78.6 kJ/mol at 160-200 Deg. Expts. also showed the pos. effect of high pH on phenol removal. P-benzoquinone and acetic acid were the main intermediates of phenol oxidn. [on SciFinder (R)]
| Original language | English |
|---|---|
| Pages (from-to) | 2147-2152 |
| Number of pages | 6 |
| Journal | Industrial & Engineering Chemistry Research |
| Volume | 41 |
| Issue number | 9 |
| Publication status | Published - 2002 |
Keywords
- oxygen
- kinetics mechanism wet air oxidn wastewater phenol
- Activation energy (catalytic wet air oxidn.
- adsorption wet air oxidn treatment wastewater phenol
- and pH effect on kinetics and mechanism of adsorption by and activated carbon-supported copper oxide-catalyzed wet air oxidn. of wastewater phenol)
- wet air oxidn. and
- Wastewater treatment (oxidn.
- adsorption and
- catalyst particle size
- Oxidation catalysts (activated carbon-supported copper oxide
- mixing
- temp.
- Adsorption
- Chemical oxygen demand (removal of
- Wastewater treatment (adsorption
- wastewater treatment wet air oxidn phenol removal
- Oxidation kinetics (mixing
- wet air