Abstract：
: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.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Arreola-Vargas J,Ojeda-Castillo V,Snell-Castro R,Corona-González RI,Alatriste-Mondragón F,Méndez-Acosta HOdoi
10.1016/j.biortech.2015.01.036subject
Has Abstractpub_date
2015-04-01 00:00:00pages
191-9eissn
0960-8524issn
1873-2976pii
S0960-8524(15)00056-5journal_volume
181pub_type
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