Methane production from acid hydrolysates of Agave tequilana bagasse: Evaluation of hydrolysis conditions and methane yield

被引：52

作者：

Arreola-Vargas, Jorge ^{[1
]}

Ojeda-Castillo, Valeria ^{[1
]}

Snell-Castro, Raul ^{[1
]}

Isela Corona-Gonzalez, Rosa ^{[1
]}

Alatriste-Mondragon, Felipe ^{[2
]}

Mendez-Acosta, Hugo O. ^{[1
]}

机构：

[1] Univ Guadalajara, CUCEI, Dept Ingn Quim, Guadalajara 44430, Jalisco, Mexico

[2] Inst Potosino Invest Cient & Tecnol AC, Div Ciencias Ambientales, San Luis Potosi 78216, Slp, Mexico

来源：

BIORESOURCE TECHNOLOGY | 2015年 / 181卷

关键词：

Anaerobic digestion; Biogas production; Lignocellulosic biomass pretreatment; Response surface methodology; Sequencing batch reactor; ANAEROBIC-DIGESTION; LIGNOCELLULOSIC BIOMASS; ENZYMATIC-HYDROLYSIS; HYDROGEN-PRODUCTION; BIOFUEL PRODUCTION; BIOGAS PRODUCTION; BATCH REACTORS; OAT STRAW; PRETREATMENT; DIVERSITY;

D O I：

10.1016/j.biortech.2015.01.036

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Evaluation of diluted acid hydrolysis for sugar extraction from cooked and uncooked Agave tequilana bagasse and feasibility of using the hydrolysates as substrate for methane production, with and without nutrient addition, in anaerobic sequencing batch reactors (AnSBR) were studied. Results showed that the hydrolysis over the cooked bagasse was more effective for sugar extraction at the studied conditions. Total sugars concentration in the cooked and uncooked bagasse hydrolysates were 27.9 g/L and 18.7 g/L, respectively. However, 5-hydroxymethylfurfural was detected in the cooked bagasse hydrolysate, and therefore, the uncooked bagasse hydrolysate was selected as substrate for methane production. Interestingly, results showed that the AnSBR operated without nutrient addition obtained a constant methane production (0.26 L CH4/g COD), whereas the AnSBR operated with nutrient addition presented a gradual methane suppression. Molecular analyses suggested that methane suppression in the experiment with nutrient addition was due to a negative effect over the archaeal/bacterial ratio. (C) 2015 Published by Elsevier Ltd.

引用

页码：191 / 199

页数：9

共 33 条

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