The Effect of Latex Contained Plant on Kinetic Parameters of Pyrolyzing Yard Waste
| Autor: | TSAI,YAO-CHENG, 蔡耀徵 |
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| Rok vydání: | 2019 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 107 Yard waste is defined as the debris of plants naturally produced by ecological cycles, and is also one of the most important sources of waste biomass. Some of the yard waste contain plant latex, which draws more attention merely in medical research field, only a few research focus on the field of resource recycle. Consequently, the goal of waste recycling and reduction could be achieved when its recycle as well as reuse values were discovered. The specimens of this study included a latex-free tree species (Pterocarpus indicus Willd) and a tree species with latex (Alstonia scholaris). Samples were collected and analyzed with experimental parameters designed in advance. Kinetic parameters (activation energy, pre-exponential factor, and reaction order) were calculated by various pyrolysis kinetic models based on the results of thermogravimetric analysis. Pyrolysis experiments were conducted to investigate the effects of latex on pyrolysis kinetic parameters as well as the feasibility of producing biofuels. The experimental results revealed that both species contained low moisture and ash, and high combustible components with a calorific value of 4600 Kcal/Kg, indicating potential feasibility of producing biofuels. As for the results of calculating pyrolysis kinetic parameters with different models, the average activation energy of Pterocarpus indicus Willd (56.2 Kcal/mol) was higher than that of Alstonia scholaris (48.6 Kcal/mol). The primary reaction range was between 235℃ to 396℃, where it increased with the amount of Alstonia scholaris added. Meanwhile, the activation energy and pre-exponential factor decreased with the amount of Alstonia scholaris added. According to the results of pyrolysis experiments, the calorific value of the product increased compared to the raw material thereof, and the carbon contents as well. To sum up, it's possible that plant latex might affect its pyrolysis kinetic parameters, and it's also feasible to produce biofuels. Extended studies could be conducted to verify the effects with latex-free trees in the future. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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