Influence of microalgae on synergism during co-pyrolysis with organic waste biomass: A thermogravimetric and kinetic analysis
| Autor: | Paula Blanco Sanchez, Arun K. Vuppaladadiyam, Elsa Antunes, Hubao Duan, Ming Zhao |
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| Rok vydání: | 2021 |
| Předmět: |
Thermogravimetric analysis
Reaction mechanism 060102 archaeology Renewable Energy Sustainability and the Environment Chemistry 020209 energy Thermal decomposition Biomass Water gas 06 humanities and the arts 02 engineering and technology Biodegradable waste Activation energy Chemical kinetics Chemical engineering 0202 electrical engineering electronic engineering information engineering 0601 history and archaeology |
| Zdroj: | Renewable Energy. 167:42-55 |
| ISSN: | 0960-1481 |
| DOI: | 10.1016/j.renene.2020.11.039 |
| Popis: | The synergistic influence of microalgae on the two forms of organic waste biomasses, namely biomass wastes (BW) and its digested form (DBW), during co-pyrolysis was evaluated based on the thermal decomposition behaviour, gas yields, extent of thermal decomposition and reaction kinetics. The biomasses and their blends were co-pyrolysed at three different heating rates (10, 15 and 20 °C min−1) in a thermogravimetric analyzer coupled with a mass spectrometer. Initial assessment, based on TG-DTG data, revealed that the thermal degradation can be divided into three zones (50-150 °C, 150-550 °C and 550-800 °C) for all the biomasses and their blends. The thermogravimetric data was used to evaluate the kinetic triplet, which include apparent activation energy (Eα), pre-exponential factor (A) and reaction mechanism, f(α). Semi-quantitative method was used to quantify the gas species, H2, CO2 and CO were dominant species, implying the water gas reactions and oxidation reactions were predominant. The synergistic influence of microalgae was clearly evident in terms of reaction kinetics, as noted in the reduction in the apparent activation energy and increase in the total gas yields. The obtained kinetic triplet and thermodynamic parameters are expected to facilitate the design and optimization of co-pyrolysis of microalgae with other forms of organic wastes. |
| Databáze: | OpenAIRE |
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