Pyrolysis of wood impregnated with phosphoric acid for the production of activated carbon: Kinetics and porosity development studies

The pyrolysis of impregnated wood for the production of activated carbon is investigated. Laboratory experiments are performed in a TG for heating rates of 10 °C/min and 20 °C/min and a mathematical model for the kinetics of the pyrolysis process is developed and validated. The effect of the tempera...

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Bibliographic Details
Published in:Journal of analytical and applied pyrolysis 2007-05, Vol.79 (1), p.101-105
Main Authors: Ahmed Hared, Idriss, Dirion, Jean-Louis, Salvador, Sylvain, Lacroix, Marcel, Rio, Sebastien
Format: Article
Language:English
Subjects:
Activated carbon
Crossed bed reactor
Engineering Sciences
Phosphoric acid
Pyrolysis
Thermogravimetric analysis
Wood
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Summary:The pyrolysis of impregnated wood for the production of activated carbon is investigated. Laboratory experiments are performed in a TG for heating rates of 10 °C/min and 20 °C/min and a mathematical model for the kinetics of the pyrolysis process is developed and validated. The effect of the temperature and of the time duration of the pyrolysis process on the specific surface of the activated carbon is examined on the basis of experiments conducted in a crossed bed reactor. Results indicate that the temperature and the residence time in the pyrolysis reactor may be optimised. Indeed, it is found that the maximum specific surface of the end product is obtained for pyrolysis processes conducted at a temperature of 400 °C for a time period of 1 h.
ISSN:0165-2370
1873-250X
DOI:10.1016/j.jaap.2006.12.016