A comparative study of the pyrolytic behavior, product properties, and environmental-economic performance of old corrugated containers recycling using pyrolysis and catalytic graphitization
The pyrolysis technology has shown the potential to effectively convert complex organic matter into high-value-added products. The pyrolysis and iron-catalytic graphitization processes were investigated with a view to converting old corrugated containers into valuable products, with a particular foc...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-06-01
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| Series: | Applications in Energy and Combustion Science |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666352X25000160 |
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| Summary: | The pyrolysis technology has shown the potential to effectively convert complex organic matter into high-value-added products. The pyrolysis and iron-catalytic graphitization processes were investigated with a view to converting old corrugated containers into valuable products, with a particular focus on pyrolytic behavior, kinetics and environmental-economic performance. Activation energy of dehydration, devolatilization, and carbonization stages determined by Coats-Redfern method were 162.721 kJ/mol, 173.679 kJ/mol and 245.753 kJ/mol, respectively. During the pyrolysis reaction, as the temperature increased and the H/C atomic ratio declined, the solid char underwent a gradual polymerization process, forming a large aromatic structure. At 800 °C, the hydrogen yield was 4.64 mmol/g and the resulting char was nonporous with a surface area of 32.06 m2/g. Catalytic graphitization method promoted deoxygenation and activation of carbon-hydrogen bonds, resulting in the formation of porous graphitic char. The graphitic char exhibited a high surface area of 292 m2/g and a high graphitization parameter (g) of 0.197. Additionally, a notable increase of 53.6 % was observed in hydrogen yield. The results indicated that catalytic graphitization had the potential to enhance the economic benefit and carbon reduction by up to 2081 % and 190 %, respectively, in comparison to pyrolysis. This study offers insight into an economically and environmentally friendly refining technology for old corrugated containers and the development of more sustainable processes utilizing waste organics as a carbon precursor for the production of graphitic carbon. |
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| ISSN: | 2666-352X |