Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/6680
Title: Optimization of sugarcane bagasse autohydrolysis for methane production from hemicellulose hydrolyzates in a biorefinery concept.
Authors: Baeta, Bruno Eduardo Lobo
Lima, Diego Roberto de Sousa
Herrera Adarme, Oscar Fernando
Gurgel, Leandro Vinícius Alves
Aquino, Sergio Francisco de
Keywords: Sugarcane bagasse
Autohydrolysis pretreatment
Anaerobic digestion
Biomethane
Hemicellulose hydrolyzate
Issue Date: 2016
Citation: BAÊTA, B. E. L. et al. Optimization of sugarcane bagasse autohydrolysis for methane production from hemicellulose hydrolyzates in a biorefinery concept. Bioresource Technology, v. 200, p. 137-146, 2016. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0960852415013875>. Acesso em: 16 jun. 2016.
Abstract: This study aimed to optimize through design of experiments, the process variables (temperature – T, time – t and solid-to-liquid ratio – SLR) for sugarcane bagasse (SB) autohydrolysis (AH) to obtain hemicellulose hydrolyzates (HH) prone to anaerobic digestion (AD) and biochemical methane production (BMP). The results indicated that severe AH conditions, which lead to maximum hemicelluloses dissolution and sugar content in the HH, were not the best for BMP, probably due to the accumulation of toxic/recalcitrant compounds (furans and lignin). Mild AH conditions (170 _C, 35 min and SLR = 0.33) led to the highest BMP (0.79 Nm3 kg TOC_1), which was confirmed by the desirability tool. HH produced by AH carried out at the desired condition DC2 (178.6 _C, 43.6 min and SLR = 0.24) showed the lowest accumulation of inhibitory compounds and volatile fatty acids (VFA) and highest BMP (1.56 Nm3 kg TOC_1). The modified Gompertz model best fit the experimental data and led to a maximum methane production rate (R) of 2.6 mmol CH4 d_1 in the best condition.
URI: http://www.repositorio.ufop.br/handle/123456789/6680
metadata.dc.identifier.doi: https://doi.org/10.1016/j.biortech.2015.10.003
ISSN: 0960-8524
metadata.dc.rights.license: O periódico Bioresource Technology concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3898810503965.
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