Hydrocarbon selectivity enhancement through catalytic fast co-pyrolysis of almond shell and plastic blends
Background The aim of this article is to explore possible pathways for the synergistic optimization of bio-oil by the catalytic fast co-pyrolysis of almond shell (AS) and plastic residues (polyethylene, PE, and polystyrene, PS). Pyrolysis was carried out at 650 °C at a heating rate of 20 °C/ms at a...
| Autores: | , , |
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| Formato: | artículo |
| Fecha de publicación: | 2023 |
| País: | España |
| Recursos: | Universidad de Castilla-La Mancha |
| Repositorio: | RUIdeRA. Repositorio Institucional de la UCLM |
| OAI Identifier: | oai:ruidera.uclm.es:10578/31907 |
| Acesso em linha: | http://hdl.handle.net/10578/31907 |
| Access Level: | acceso abierto |
| Palavra-chave: | Almond shell Catalytic co-fast pyrolysis Hydrocarbon selectivity Polyethylene Polystyrene Aromatics Cáscara de almendra Pirólisis catalítica rápida Selectividad de hidrocarburos Polietileno Poliestireno Aromáticos |
| Resumo: | Background The aim of this article is to explore possible pathways for the synergistic optimization of bio-oil by the catalytic fast co-pyrolysis of almond shell (AS) and plastic residues (polyethylene, PE, and polystyrene, PS). Pyrolysis was carried out at 650 °C at a heating rate of 20 °C/ms at a residence time of 20 s. Hydrogen from the plastic pro‑ moted the decarboxylation of acids and decarbonylation of carbonyls and sugars from biomass waste. Results Co-pyrolysis results showed a fall in oxygen in the AS/plastics blends, whereas carbon yields increased as did the calorifc value of the oil. As expected, AS/PE blends enhanced production of hydrocarbon fractions, especially ole‑ fns, with yields reaching 81.1%, whereas AS/PS blends enhanced formation of aromatic compounds. HZSM-5 assisted the increase of monocyclic aromatics content in AS/PE blends. AS/PS blends favoured the increased of aromatics (45% of total hydrocarbons for 1:2 AS/PE-HZ). For AS/PS-HZ blends toluene was enhanced as was the production of 1,3,5-cycloheptatriene. Conclusions These fndings helped to gain a great insight into how catalytic co-fast pyrolysis of feedstocks can enhance the formation of value-added products, promoting their economic potential for agricultural exploitations. |
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