Thermal Degradation and Kinetics Analysis of Forest Waste for Energy Recovery
| Autor: | Cuthbert F. Mhilu |
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| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Open Journal of Renewable Energy and Sustainable Development. 2:16-27 |
| ISSN: | 2374-5363 2374-5371 |
| DOI: | 10.15764/aphy.2015.01002 |
| Popis: | The uncertainty surrounding fossil fuels, the need for diversification of energy supply and the environmental awareness concerning climate change, are some of the factors that prompted interest in the 2 nd generation biofuels to deal with sustainability issues that 1 st generation biofuels have been under criticism. This paper examines the possibility of exploiting biomass residues from pines and eucalypts trees that are widely planted in most of Tanzania forests. The properties of saw dust materials originating from these trees were investigated by adopting proximate and ultimate analysis methods. The results revealed both pine and eucalyptus sawdust materials to have high O/C ratios hence, but with low H/C ratios, while their heating values are 152.446 kJ/mol, for pine and 157.576 kJ/mol, for eucalyptus. The study on thermal degradation made using a Thermo-gravimetric analysis conducted by heating the material to 1000 K allowed to study the degradation behavior of the materials at different heating rates of 5, 10, 20 and 40 Kmin -1 . Kinetic study of the materials estimated the activation energy for pine and eucalyptus was to be 152.446 and 157.576 kJ/mol respectively. These results gave an indication that eucalyptus sawdust could be suitable for bio-oil production due to its high volatile level, while pine sawdust for syngas production since it contains high ash content. |
| Databáze: | OpenAIRE |
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