Pyrolysis of acai seed biomass: Kinetics and thermodynamic parameters using thermogravimetric analysis
| Autor: | Luiz K. C. de Souza, Mariana N. Guimarães, Jamal da Silva Chaar, Carlos E.F. da Costa, Rayanne O. Araujo, Vanuza O. Santos, Flaviana C. P. Ribeiro, Leandro S. Queiroz |
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| Rok vydání: | 2020 |
| Předmět: |
Thermogravimetric analysis
Residue (complex analysis) Environmental Engineering Renewable Energy Sustainability and the Environment Chemistry 020209 energy Analytical chemistry Bioengineering 02 engineering and technology Activation energy 010501 environmental sciences Raw material 01 natural sciences Bioenergy 0202 electrical engineering electronic engineering information engineering Heat of combustion Inert gas Waste Management and Disposal Pyrolysis 0105 earth and related environmental sciences |
| Zdroj: | Bioresource Technology Reports. 12:100553 |
| ISSN: | 2589-014X |
| Popis: | Acai (Euterpe oleracea Mart.) is a typical fruit of the Amazon region that annually generates many tons of acai seeds. In this study, the thermogravimetric analysis of this residue was performed to determine the kinetic and thermodynamic parameters of the pyrolysis process for its energy recovery. The thermogravimetric curves were determined in the range of 30–900 °C under inert atmosphere, at different heating rates of 5, 10, 15 and 20 °C.min−1. Kinetic analysis was performed using Flynn-Wall-Ozawa (FWO) and Kissinger-Akahira-Sunose (KAS) iso-conversional models. The results showed that the acai seed's activation energy was 159.12 kJ/mol and 157.62 kJ/mol, which was calculated by FWO and KAS, respectively. Thermodynamic parameters, such as ΔH, ΔG and ΔS, and the high heating value (21.1 MJ kg−1) showed that the acai seed is an excellent potential source of raw material for bioenergy production. |
| Databáze: | OpenAIRE |
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