Simultaneous hydrogen and ethanol production from a mixture of glucose and xylose using extreme thermophiles II: Effect of hydraulic retention time

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논문

Simultaneous hydrogen and ethanol production from a mixture of glucose and xylose using extreme thermophiles II: Effect of hydraulic retention time

학술지

International journal of hydrogen energy

저자명

Zhao, C.; Lu, W.; Wang, H.

초록

In this study, biofuels (hydrogen and ethanol) fermentation from glucose and xylose by extreme thermophiles in an Up-flow Anaerobic Sludge Bed (UASB) reactor was successfully demonstrated. Autoclaved methanogenic granules were used as carriers for the extreme thermophiles. High yields of hydrogen and ethanol were achieved at various HRTs from 24 h to 6 h. The highest hydrogen production rate of 121 +/- 23 mL/(L h) and highest ethanol production rate of 6.7 +/- 1.2 mmol/(L h) were observed at HRT = 12 h. The highest simultaneous hydrogen and ethanol yields were 0.58 +/- 0.11 mol H<SUB>2</SUB>/(mol hexose) and 0.72 +/- 0.13 mol ethanol/(mol hexose), reaching a total energy yield of 1151 kJ/mol hexose. The substrate conversion efficiency was maintained over 90% at three HRTs (24, 18, and 12 h).

발행연도

2013

발행기관

Pergamon Press ; Elsevier Science Ltd

ISSN

0360-3199

ISSN

1879-3487

권

호

페이지

pp.9131-9136