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metadata.artigo.dc.title: Assessment of different biomass feeding strategies for improving the enzymatic hydrolysis of sugarcane straw
metadata.artigo.dc.creator: Santos-Rocha, Martha Suzana Rodrigues dos
Pratto, Bruna
Corrêa, Luciano Jacob
Badino, Alberto Colli
Almeida, Renata Maria Rosas Garcia
Cruz, Antonio José Gonçalves
metadata.artigo.dc.publisher: Elsevier Dec-2018
metadata.artigo.dc.identifier.citation: SANTOS-ROCHA, M. S. R. dos et al. Assessment of different biomass feeding strategies for improving the enzymatic hydrolysis of sugarcane straw. Industrial Crops and Products, [S.l.], v. 125, p. 293-302, Dec. 2018.
metadata.artigo.dc.description.abstract: This work describes improvements in the enzymatic hydrolysis of hydrothermally pretreated sugarcane straw. The experiments were performed in batch and fed-batch operation modes (50 mL and 3 L working volumes) with final solid loadings of 10, 20, and 30% (w/v) and enzyme dosage of 10 FPU/gsubstrate. The fed-batch assays showed the most promising results in terms of glucose production and cellulose-to-glucose conversion. In the experiments using a 3 L working volume, analysis of cellulose-to-glucose conversion, power consumption, and apparent viscosity showed that the best assays were those with smoother feed delivery (substrate plus enzyme) throughout the enzymatic hydrolysis. This strategy resulted in 108.8 g/L of glucose and cellulose-to-glucose conversion of 59.7%, corresponding to a final theoretical ethanol content of 55.6 g/L. The power consumption per unit volume and the apparent viscosity were less than 5 kW/m3 and 35 mPa s, respectively, throughout the hydrolysis. Thus, a more concentrated liquor and a less powerful motor to deliver power during the hydrolysis process were obtained in fed-batch strategy reducing the process energy costs.
metadata.artigo.dc.language: en_US
Appears in Collections:DEG - Artigos publicados em periódicos

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