Caracterização dos resíduos do processameto de mandioca para produção de bio-etanol e sua utilização na alimentação de aves
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Data
2009-06-22
Autores
Ordoñez Camacho, Ileana Andrea [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
A produção de bioetanol utilizando raízes de mandioca irá produzir um resíduo lignocelulósico que juntamente com o vinho esgotado nas colunas de destilação, constituem-se nos principais resíduos gerados no processo. Normalmente os resíduos líquidos seguem para tratamento em lagoas de estabilização enquanto que os resíduos sólidos são descartados no ambiente incorporando esta biomassa ao solo. A fim de se obter um melhor rendimento econômico na produção de etanol a partir das raízes de mandioca, o presente trabalho teve como objetivo realizar a caracterização físico-química de resíduos sólidos gerados em dois tipos de processamento da matéria prima numa planta de fabricação de etanol e, verificar a possibilidade de sua inclusão em dietas formuladas para frangos de corte aproveitando os nutrientes remanescentes. O processamento das raízes de mandioca teve inicio com a lavagem e desintegração das raízes com adição de 20% de água até obter uma polpa que foi tratada em reator agitado adicionando enzima -amilase e temperatura de 90°C por 2 horas. Em seguida, ajuste de pH, abaixamento da temperatura para 60°C e adição de enzima amiloglucosidase com agitação por 14 horas para ser efetuada a fermentação. O hidrolisado obtido foi a fonte dos dois tipos de resíduo quais sejam: i) resíduo obtido da filtração do hidrolisado antes da fermentação e; ii) resíduo obtido da filtração do vinho alcoólico após fermentação do hidrolisado...
The elaboration of bioethanol using cassava roots, produces a lignocellulosic waste which along with the wine produced in the distillation columns, constitute the main kind of waste generated in the process. The liquid waste is treated in stabilization ponds, while the solid waste is disposed in the environment, incorporating such biomass to the soil. Aiming at to get the best advantage from the production of ethanol, from cassava roots, this work presented a physical-chemical characterization from two different kinds of waste obtained from two different kinds of such raw material processing, and developed a methodology for including this into fattening chicken diets in the early phase, getting the best possible from the carbohydrates. The processing of cassava roots began with the disintegration and washing the roots with the addition of 20% of water to obtain a pulp which was treated in stirred reactor adding enzyme -amylase and temperature of 90 ° C for 2 hours. Then, adjust the pH, lowering the temperature to 60 ° C and addition of enzyme amiloglucosidase and stirring for 14 hours. The hydrolyzate obtained was the source of two types of waste which are: i) type 1 solid residue obtained after filtration of the hydrolyzate and ii) solid waste type 2 obtained from filtering the wine after alcoholic fermentation of the hydrolyzate. The experimental design included both types of waste at levels of 5, 10 and 15% in diets for broiler chickens for a period of 21 days. The experiments showed that the inclusion of hydrolyzed cassava waste in the formulation of diets adversely affected the performance of the animals, while the inclusion of fermented residue doesn’t affected the performance in experiments.
The elaboration of bioethanol using cassava roots, produces a lignocellulosic waste which along with the wine produced in the distillation columns, constitute the main kind of waste generated in the process. The liquid waste is treated in stabilization ponds, while the solid waste is disposed in the environment, incorporating such biomass to the soil. Aiming at to get the best advantage from the production of ethanol, from cassava roots, this work presented a physical-chemical characterization from two different kinds of waste obtained from two different kinds of such raw material processing, and developed a methodology for including this into fattening chicken diets in the early phase, getting the best possible from the carbohydrates. The processing of cassava roots began with the disintegration and washing the roots with the addition of 20% of water to obtain a pulp which was treated in stirred reactor adding enzyme -amylase and temperature of 90 ° C for 2 hours. Then, adjust the pH, lowering the temperature to 60 ° C and addition of enzyme amiloglucosidase and stirring for 14 hours. The hydrolyzate obtained was the source of two types of waste which are: i) type 1 solid residue obtained after filtration of the hydrolyzate and ii) solid waste type 2 obtained from filtering the wine after alcoholic fermentation of the hydrolyzate. The experimental design included both types of waste at levels of 5, 10 and 15% in diets for broiler chickens for a period of 21 days. The experiments showed that the inclusion of hydrolyzed cassava waste in the formulation of diets adversely affected the performance of the animals, while the inclusion of fermented residue doesn’t affected the performance in experiments.
Descrição
Palavras-chave
Ave, Álcool, Residuos, Ethanol, Cassava, Waste, Bird, Chicken
Como citar
ORDOÑEZ CAMACHO, Ileana Andrea. Caracterização dos resíduos do processameto de mandioca para produção de bio-etanol e sua utilização na alimentação de aves. 2009. x, 63 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Ciências Agronômicas de Botucatu, 2009.