Enhancement of biogas production from swine manure by a lignocellulolytic microbial consortium
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Author list: Tuesorn S., Wongwilaiwalin S., Champreda V., Leethochawalit M., Nopharatana A., Techkarnjanaruk S., Chaiprasert P.
Publisher: Elsevier
Publication year: 2013
Journal: Bioresource Technology (0960-8524)
Volume number: 144
Start page: 579
End page: 586
Number of pages: 8
ISSN: 0960-8524
Languages: English-Great Britain (EN-GB)
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Abstract
Anaerobic digestion of lignocellulosic wastes is limited by inefficient hydrolysis of recalcitrant substrates, leading to low biogas yield. In this study, the potential of a lignocellulolytic microbial consortium (LMC) for enhancing biogas production from fibre-rich swine manure (SM) was assessed. Biochemical methane potential assay showed that inoculation of structurally stable LMC to anaerobic digestion led to increase biogas production under mesophilic and thermophilic conditions. The greatest enhancement was observed at 37ฐC with a LMC/SM ratio of 1.5:1mgVSS/gVS leading to biogas and methane yields of 355 and 180ml/gVSadded respectively, equivalent to 40% and 55% increases compared with the control. The LMC was shown to increase the efficiency of total solid, chemical oxygen demand removal and degradation of cellulose and hemicelluloses (1.87 and 1.65-fold, respectively). The LMC-supplemented process was stable over a 90d biogas production period. This work demonstrates the potential of LMC for enhancing biogas from lignocellulosic wastes. ฉ 2013 Elsevier Ltd.
Keywords
Lignocellulolytic microbial consortium, Swine manure
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