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Title of article :
Coproduction of hydrogen and methane via anaerobic fermentation of cornstalk waste in continuous stirred tank reactor integrated with up-flow anaerobic sludge bed
Author/Authors :
Cheng، نويسنده , , Xiyu and Li، نويسنده , , Qian and Liu، نويسنده , , Chun-Zhao، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2012
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Abstract :
A 10 L continuous stirred tank reactor (CSTR) system was developed for a two-stage hydrogen fermentation process with an integrated alkaline treatment. The maximum hydrogen production rate reached 218.5 mL/L h at a cornstalk concentration of 30 g/L, and the total hydrogen yield and volumetric hydrogen production rate reached 58.0 mL/g-cornstalk and 0.55–0.57 L/L d, respectively. A 10 L up-flow anaerobic sludge bed (UASB) was used for continuous methane fermentation of the effluents obtained from the two-stage hydrogen fermentation. At the optimal organic loading rate of 15.0 g-COD/L d, the COD removal efficiency and volumetric biogas production rate reached 83.3% and 4.6 L/L d, respectively. Total methane yield reached 200.9 mL/g-cornstalk in anaerobic fermentation with the effluents and alkaline hydrolysate. As a result, the total energy recovery by coproduction of hydrogen and methane with anaerobic fermentation of cornstalk reached 67.1%.
Keywords :
Cornstalk , Continuous stirred tank reactor , Up-flow anaerobic sludge bed , Clostridium thermocellum , Hydrogen and methane fermentation
Journal title :
Bioresource Technology
Journal title :
Bioresource Technology
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