Busca avançada
Ano de início
Entree
(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Mixing design for enzymatic hydrolysis of sugarcane bagasse: methodology for selection of impeller configuration

Texto completo
Autor(es):
Correa, Luciano Jacob [1] ; Badino, Alberto Colli [1, 2] ; Goncalves Cruz, Antonio Jose [1, 2]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Fed Sao Carlos, Chem Engn Grad Program, PPGEQ UFSCar, Rodovia Washington Luis Km 235, BR-13565905 Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos, Dept Chem Engn, Rodovia Washington Luis Km 235, BR-13565905 Sao Carlos, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: Bioprocess and Biosystems Engineering; v. 39, n. 2, p. 285-294, FEB 2016.
Citações Web of Science: 16
Resumo

One of the major process bottlenecks for viable industrial production of second generation ethanol is related with technical-economic difficulties in the hydrolysis step. The development of a methodology to choose the best configuration of impellers towards improving mass transfer and hydrolysis yield together with a low power consumption is important to make the process cost-effective. In this work, four dual impeller configurations (DICs) were evaluated during hydrolysis of sugarcane bagasse (SCB) experiments in a stirred tank reactor (3 L). The systems tested were dual Rushton turbine impellers (DIC1), Rushton and elephant ear (down-pumping) turbines (DIC2), Rushton and elephant ear (up-pumping) turbines (DIC3), and down-pumping and up-pumping elephant ear turbines (DIC4). The experiments were conducted during 96 h, using 10 % (m/v) SCB, pH 4.8, 50 A degrees C, 10 FPU/g(biomass), 470 rpm. The mixing time was successfully used as the characteristic parameter to select the best impeller configuration. Rheological parameters were determined using a rotational rheometer, and the power consumptions of the four DICs were on-line measured with a dynamometer. The values obtained for the energetic efficiency (the ratio between the cellulose to glucose conversion and the total energy) showed that the proposed methodology was successful in choosing a suitable configuration of impellers, wherein the DIC4 obtained approximately three times higher energetic efficiency than DIC1. Furthermore a scale-up protocol (factor scale-up 1000) for the enzymatic hydrolysis reactor was proposed. (AU)

Processo FAPESP: 11/23807-1 - Desenvolvimento e avaliação das condições de operação de biorreatores visando a produção de produtos biotecnológicos
Beneficiário:Alberto Colli Badino Junior
Linha de fomento: Auxílio à Pesquisa - Regular