Análise do processo de pirólise de sementes de Açaí (Euterpe Oleracea, Mart): Influência da temperatura no rendimento dos produtos de reação e nas propriedades físico-químicas do Bio-Óleo / Process analysis of pyrolise of Açaí (Euterpe Oleracea, Mart) seeds: Influence of temperature on the yield of reaction products and physico-chemical properties of Bio-Oil

Alisson Caio Magalhães Serrão, Conceição Maria Sales Silva, Fernanda Paula da Costa Assunção, Haroldo Jorge da Silva Ribeiro, Marcelo Costa Santos, Hélio da Silva Almeida, Sergio Duvoisin Jr., Luiz Eduardo Pizarro Borges, Douglas Alberto Rocha de Castro, Nélio Teixeira Machado

Abstract


Neste trabalho, investigou-se a influência da temperatura no rendimento de produtos de reação (bio-óleo, gás,  e coque) e nas propriedades físico-químicas (índice de acidez, densidade e viscosidade cinemática) do bio-óleo obtido via pirólise de sementes de Açaí (Euterpe oleracea, Mart.), um resíduo rico em lignina-celulose, em escala piloto. A reação de pirólise foi realizada em reator de 143 L, operando em modo batelada a 350, 400 e 450 ºC, 1,0 atmosfera. O bio-óleo foi caracterizado físico-quimicamente em termos de densidade, viscosidade cinemática, índice de acidez e índice de refração. Os rendimentos do bio-óleo, , e gás variaram entre 2,0 e 4,39% (em peso), 26,58 e 29,39% (em peso) e 18,76 e 30,56% (em peso), respectivamente, aumentando com a temperatura do processo, enquanto que da fase sólida (coque) variou entre 35,67 e 52,67% (em peso), diminuindo com a temperatura. As densidades de bio-óleo e viscosidades cinemáticas variaram entre 1,0236 e 1,0468 g/cm³ e 57,22 e 68,34 mm²/s, respectivamente, aumentado com a temperatura, enquanto que os índices de acidez do bio-óleo variaram entre 70,26 e 92,87 mg KOH/g, diminuindo com a temperatura.

 

 


Keywords


Açai, Sementes Residuais, Pirólise, Bio-Óleo, Propriedades Físico-Químicas.

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DOI: https://doi.org/10.34117/bjdv7n2-453

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