TY - JOUR
T1 - Biological hydrogen and methane production from bagasse bioethanol fermentation residues using a two-stage bioprocess
AU - Cheng, Hai Hsuan
AU - Whang, Liang Ming
AU - Chung, Man Chien
AU - Chan, Kun Chi
N1 - Funding Information:
The authors would like to acknowledge the financial support from the Ministry of Science and Technology of Taiwan under Grant NSC 103-2221-E-006-009-MY3 , the Ministry of Education of Taiwan under Grant for the Top University Project to the National Cheng Kung University, and the Bureau of Energy, Ministry of Economic Affairs Energy Technology Program for Academia under Grant No. 102-D0613. The authors would also like to thank Dr. Cary T. Chiou for his kindly editorial assistance.
Publisher Copyright:
© 2016 Elsevier Ltd.
PY - 2016/6/1
Y1 - 2016/6/1
N2 - This study investigated the recovery of H2 and CH4 from bagasse bioethanol fermentation residues (bagasse BEFR) using a two-stage bioprocess. In the hydrogen fermentation bioreactor (HFB), carbohydrate removal efficiency was maintained at 82-93% and the highest hydrogen yield was 8.24 mL/g COD at volumetric loading rate (VLR) of 80 kg COD/m3/day. The results indicated a positive correlation between hydrogen yield and butyrate-to-acetate ratio, which might be due to the mechanisms of lactate/acetate utilization for hydrogen production and acetogenesis occurring in the HFB. Remaining volatile fatty acids and alcohols in the HFB effluent were further utilized for methane production in methane fermentation bioreactor (MFB), in which the highest methane yield of 345.2 mL/g COD was attained at VLR of 2.5 kg COD/m3/day. Overall, the two-stage bioprocess achieved a maximum COD removal of 81% from bagasse BEFR, and converted 0.3% and 72.8% of COD in the forms of H2 and CH4, respectively.
AB - This study investigated the recovery of H2 and CH4 from bagasse bioethanol fermentation residues (bagasse BEFR) using a two-stage bioprocess. In the hydrogen fermentation bioreactor (HFB), carbohydrate removal efficiency was maintained at 82-93% and the highest hydrogen yield was 8.24 mL/g COD at volumetric loading rate (VLR) of 80 kg COD/m3/day. The results indicated a positive correlation between hydrogen yield and butyrate-to-acetate ratio, which might be due to the mechanisms of lactate/acetate utilization for hydrogen production and acetogenesis occurring in the HFB. Remaining volatile fatty acids and alcohols in the HFB effluent were further utilized for methane production in methane fermentation bioreactor (MFB), in which the highest methane yield of 345.2 mL/g COD was attained at VLR of 2.5 kg COD/m3/day. Overall, the two-stage bioprocess achieved a maximum COD removal of 81% from bagasse BEFR, and converted 0.3% and 72.8% of COD in the forms of H2 and CH4, respectively.
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U2 - 10.1016/j.biortech.2015.12.084
DO - 10.1016/j.biortech.2015.12.084
M3 - Article
C2 - 26774443
AN - SCOPUS:84953439534
SN - 0960-8524
VL - 210
SP - 49
EP - 55
JO - Bioresource technology
JF - Bioresource technology
ER -