| Autor: |
Ahmad Indra Siswantara, Illa Rizianiza, Diyas Prawara Mahdi, Tanwir Ahmad Farhan, Candra Damis Widiawati, Muhamad Hilman Gumelar Syafei, Adi Syuriadi |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Journal of Sustainable Development of Energy, Water and Environment Systems, Vol 12, Iss 3, Pp 1-18 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
1848-9257 |
| DOI: |
10.13044/j.sdewes.d12.0493 |
| Popis: |
The kinetics of the pyrolysis process of sheep manure were investigated using Thermogravimetric Analysis in this work. It was heated at 30°C to 900°C with a heating rate of 10°C/min. There are two stages of mass degradation, namely dehydration and devolatilization. The temperature dehydration stage is 30°C–140°C while the devolatilization stage is 210°C–900°C. However, at temperatures >500°C, mass degradation decreases until it reaches 900°C. This indicates that most of the volatile matter has disappeared at this temperature. The devolatilization stage includes the decomposition of hemicellulose and cellulose (210°C–900°C) and lignin (>590°C). The calculated activation energy from Friedman's non-conversional method is 21.32 kJ/mol and Coast-Redfern is 26,20 kJ/mol, while the frequency factor value is 9.94.1018 s-1 for Friedman and 3.42.1018 for Coast-Redfern Method which indicates that the pyrolysis process of sheep manure is a complicated phenomenon. The estimated activation energy value is then used to calculate thermodynamic properties e.g., Gibbs free energy, enthalpy, and entropy. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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