期刊
BIORESOURCE TECHNOLOGY
卷 200, 期 -, 页码 137-146出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.10.003
关键词
Sugarcane bagasse; Autohydrolysis pretreatment; Anaerobic digestion; Biomethane; Hemicellulose hydrolyzate
资金
- Brazilian National Research Council (CNPq)
- Minas Gerais State Research Funding Agency (FAPEMIG)
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 degrees C, 35 min and SLR = 0.33) led to the highest BMP (0.79 Nm(3) kg TOC (1)), which was confirmed by the desirability tool. HH produced by AH carried out at the desired condition DC2 (178.6 degrees 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 Nm(3) 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. (C) 2015 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据