Abstract:
Chemical composition, heating values and surface properties of the char samples generated fkom slow pyrolysis of different abundant lignocellulosic wastes under identical operating conditions were examined to assess comparatively their suitability for potential use as biofuel andor for further processing to produce activated carbons. Sawdust from two different wood species (Aspidosperma australe, Populus deltoide), peanut husks, and olive stones were selected. Proximate and ultimate analyses as well as physical adsorption measurements of nitrogen and carbon dioxide were performed. Heating values were estimated from a multivariate correlation in terms of samples' elemental composition. All the chars obtained are found potentially useful as relatively pollution-free solid biofuels, the char arising from sawdust of Aspidosperma wood having the greatest potential. Comparison of surface properties with those determined for the olive stones-char, taken as a reference, suggests that the chars from peanut husks and from sawdust of Populus wood could be potential adequate candidates for further conversion into activated carbons. Kinetic measurements of the wastes pyrolysis were additionally conducted by non-isothermal thermogravimetry over the temperature range 25°C-9OO°C. Kinetic parameters were estimated by applying a published model, which assumes a steadily increasing variation in the activation energy with the course of pyrolysis and allows effective representation of experimental data for all the selected wastes over the whole range of temperatures. Appreciable differences in the estimated kinetic parameters are found. © 2001 by Blackwell Science Ltd. All rights reserved.
Registro:
| Documento: |
Parte de libro
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| Título: | Comparative Study on Char Properties and Pyrolysis Kinetics of Different Lignocellulosic Wastes |
| Autor: | Bonelli, P.R.; Della Rocca, P.A.; Cerrella, G.E.; Cukierman, A.L. |
| Filiación: | Departamento de Industrias, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
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| Palabras clave: | Aspidosperma australe; Lignocellulosic wastes; Populus deltoide; Pyrolysis kinetics; Thermogravimetric curves; Activated carbon; Activation energy; Biofuels; Carbon dioxide; Cracking (chemical); Kinetic parameters; Oilseeds; Surface properties; Thermogravimetric analysis; Wastes; Aspidosperma; Lignocellulosic wastes; Populus; Pyrolysis kinetics; Thermogravimetric curve; Parameter estimation |
| Año: | 2008
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| Página de inicio: | 1116
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| Página de fin: | 1128
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| DOI: |
http://dx.doi.org/10.1002/9780470694954.ch90 |
| Título revista: | Progress in Thermochemical Biomass Conversion
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| Título revista abreviado: | Prog. in Thermochem. Biomass Convers.
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| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97804706_v_n_p1116_Bonelli |
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Citas:
---------- APA ----------
Bonelli, P.R., Della Rocca, P.A., Cerrella, G.E. & Cukierman, A.L.
(2008)
. Comparative Study on Char Properties and Pyrolysis Kinetics of Different Lignocellulosic Wastes. Progress in Thermochemical Biomass Conversion, 1116-1128.
http://dx.doi.org/10.1002/9780470694954.ch90---------- CHICAGO ----------
Bonelli, P.R., Della Rocca, P.A., Cerrella, G.E., Cukierman, A.L.
"Comparative Study on Char Properties and Pyrolysis Kinetics of Different Lignocellulosic Wastes"
. Progress in Thermochemical Biomass Conversion
(2008) : 1116-1128.
http://dx.doi.org/10.1002/9780470694954.ch90---------- MLA ----------
Bonelli, P.R., Della Rocca, P.A., Cerrella, G.E., Cukierman, A.L.
"Comparative Study on Char Properties and Pyrolysis Kinetics of Different Lignocellulosic Wastes"
. Progress in Thermochemical Biomass Conversion, 2008, pp. 1116-1128.
http://dx.doi.org/10.1002/9780470694954.ch90---------- VANCOUVER ----------
Bonelli, P.R., Della Rocca, P.A., Cerrella, G.E., Cukierman, A.L. Comparative Study on Char Properties and Pyrolysis Kinetics of Different Lignocellulosic Wastes. Prog. in Thermochem. Biomass Convers. 2008:1116-1128.
http://dx.doi.org/10.1002/9780470694954.ch90