Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 37, Issue 18, Pages 13330-13337Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2012.06.071
Keywords
Arthrospira platensis; Hydrogen production; Dark- and photo-fermentation; Ammonium removal; Zeolite
Categories
Funding
- National Natural Science Foundation of China [51176163]
- International Sci. & Tech. Cooperation Program of China [2012DFG61770, 2010DFA72730]
- National High Technology R&D Program of China [2012AA050101]
- National Key Technology R&D Program of China [2011BAD14B02]
- Specialized Research Fund for the Doctoral Program of Higher Education [20110101110021]
- Program for New Century Excellent Talents in University [NCET-11-0446]
- Key Natural Science Foundation of Zhejiang Province [Z1090532]
- Major Sci. & Tech. Special Project of Zhejiang Province [2008C13023-3]
- Fundamental Research Funds for the Central Universities [2011XZZX007]
- Program of Introducing Talents of Discipline to University [B08026]
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Arthrospira platensis wet biomass was subjected to microwave-assisted dilute H2SO4 pretreatment to improve saccharification by hydrolysis with glucoamylase and hydrogen production from dark-fermentation. When the hydrolyzed biomass from A. platensis was inoculated with hydrogenogens (heat-treated anaerobic sludge) to produce hydrogen during dark-fermentation, the maximum hydrogen yield of 96.6 ml H-2/g DW was obtained. Because high concentration of NH4+ (31.6-56.5 mM) in the residual solution (also containing acetate and butyrate) obtained from dark-fermentation can significantly inhibit the activities of photosynthetic bacteria in sequential photo-fermentation, a modified zeolite was used to extract NH4+ by ion exchange to reduce the NH4+ content to 2.2-2.7 mM (91.8%-95.8% of NH4+ removal efficiency). The treated residual solution was reused for hydrogen production in sequential photo-fermentation. The maximum hydrogen yield from A. platensis wet biomass was significantly enhanced from 96.6 to 337.0 ml H-2/g DW using a combination of dark- and photo-fermentation. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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