TY - JOUR
T1 - Material and energy balances of an integrated biological hydrogen production and purification system and their implications for its potential to reduce greenhouse gas emissions
AU - Fukushima, Yasuhiro
AU - Huang, Yu Jung
AU - Chen, Jhen Wei
AU - Lin, Hung Chun
AU - Whang, Liang Ming
AU - Chu, Hsin
AU - Lo, Young Chong
AU - Chang, Jo Shu
N1 - Funding Information:
The study presented in this article was supported by National Science Council of Taiwan under NSC 96-2218-E-006-295 . The authors benefitted from active discussions with Dr. Sheng-Shung Cheng, Dr. Jer-Horng Wu, Dr. I-Chen Tseng, Dr. Yung-Fu Wang, Dr. Hsin-Ta Hsueh, and Dr. Chun-Yen Chen.
PY - 2011/9
Y1 - 2011/9
N2 - The materials and energy in an integrated biological hydrogen production and purification system involving hydrolysis, dark fermentation, photo fermentation, CO 2 fixation and anaerobic digestion are balanced by integrating the results from multiple experiments, simulations and the literature. The findings are two fold. First, using 1000kg rice straw as a substrate, 19.8kg H 2 and 138.0kg CH 4 are obtained. The net energy balance (NEB) and net energy ratio (NER) are -738.4kWh and 77.8%, respectively, both of which imply an unfavorable energy production system. Opportunities to improve the performance particularly lie in the photo fermentation process. Second, greenhouse gas emissions are evaluated for various options. The results were comparable with the emission inventory of electricity generated from fossil fuels. NEB and NER under a zero-carbon-emission constraint were discussed in detail to clarify completely the implications of the energy and material balances on greenhouse gas emissions.
AB - The materials and energy in an integrated biological hydrogen production and purification system involving hydrolysis, dark fermentation, photo fermentation, CO 2 fixation and anaerobic digestion are balanced by integrating the results from multiple experiments, simulations and the literature. The findings are two fold. First, using 1000kg rice straw as a substrate, 19.8kg H 2 and 138.0kg CH 4 are obtained. The net energy balance (NEB) and net energy ratio (NER) are -738.4kWh and 77.8%, respectively, both of which imply an unfavorable energy production system. Opportunities to improve the performance particularly lie in the photo fermentation process. Second, greenhouse gas emissions are evaluated for various options. The results were comparable with the emission inventory of electricity generated from fossil fuels. NEB and NER under a zero-carbon-emission constraint were discussed in detail to clarify completely the implications of the energy and material balances on greenhouse gas emissions.
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U2 - 10.1016/j.biortech.2011.04.014
DO - 10.1016/j.biortech.2011.04.014
M3 - Article
C2 - 21549592
AN - SCOPUS:80051688322
SN - 0960-8524
VL - 102
SP - 8550
EP - 8556
JO - Bioresource technology
JF - Bioresource technology
IS - 18
ER -