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Catalytic wet air oxidation of phenol over active carbon catalyst: Global kinetic modelling using simulated annealing

Paper ID Volume ID Publish Year Pages File Format Full-Text
48931 46531 2006 12 PDF Available
Title
Catalytic wet air oxidation of phenol over active carbon catalyst: Global kinetic modelling using simulated annealing
Abstract

The catalytic wet air oxidation of phenol has been studied in an integral trickle bed reactor using active carbon as catalyst. Temperature, oxygen partial pressure and liquid space time have been varied from 120 to 160 °C, 1–2 bar and 0.05–0.55 kgcat kgL−1 h, respectively. The active carbon catalyst employed is stable and performs phenol and COD conversions over 99% and 85% with a low residual content of bio-toxic aromatic compounds. The distribution of the main intermediates has been quantitatively assessed by means of HPLC analysis to develop a global kinetic model for the phenol oxidation over active carbon. Several rate models and reaction pathways have been tested in the kinetic modelling. The involved model parameters have been optimised with the stochastical simulated annealing algorithm leading to a very satisfactory fit of the whole experimental data. On cost of a higher, but still reasonable, computational time demand, this easy to implement algorithm proves to be a robust alternative to the classical gradient-based Levenberg–Marquardt algorithm for multi-parameter identification.

Keywords
Phenol; Active carbon; Catalytic wet air oxidation; Trickle bed reactor; Reaction pathway; Kinetics; Simulated annealing
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Catalytic wet air oxidation of phenol over active carbon catalyst: Global kinetic modelling using simulated annealing
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 67, Issues 1–2, 11 September 2006, Pages 12–23
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us