期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 37, 期 8, 页码 6536-6544出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2012.01.025
关键词
Arthrospira platensis; Cyanobacterial biomass; Hydrogen production; Heterofermentation; Autofermentation
资金
- National Natural Science Foundation of China [51176163]
- International Science & Technology Cooperation Program of China [2010DFA72730, S2012GR0037]
- National High Technology R&D Program of China [SS2012AA050101]
- National Key Technology R&D Program of China [2011BAD14B02]
- Specialized Research Fund for the Doctoral Program of Higher Education [20110101110021]
- 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]
Hydrogen production from Arthrospira (Spirulina) platensis wet biomass through heterofermentation by the [FeFe] hydrogenase of hydrogenogens (hydrogen-producing bacteria) and autofermentation by the [NiFe] hydrogenase of Arthrospira platensis was discussed under dark anaerobic conditions. In heterofermentation, wet cyanobacterial biomass without pretreatment was hardly utilized by hydrogenogens for hydrogen production. But the carbohydrates in cyanobacterial cells released after cell wall disruption were effectively utilized by hydrogenogens for hydrogen production. Wet cyanobacterial biomass was pretreated with boiling and bead milling, ultrasonication, and ultrasonication and enzymatic hydrolysis. Wet cyanobacterial biomass pretreated with ultrasonication and enzymatic hydrolysis achieved the maximum reducing sugar yield of 0.407 g/g-DW (83.0% of the theoretical reducing sugar yield). Different concentrations (10 g/l to 40 g/l) of pretreated wet cyanobacterial biomass were used as substrate to produce fermentative hydrogen by hydrogenogens, which were domesticated with the pretreated wet cyanobacterial biomass as carbon source. The maximum hydrogen yield of 92.0 ml H-2/g-DW was obtained at 20 g/l of wet cyanobacterial biomass. The main soluble metabolite products (SMPs) in the residual solutions from heterofermentation were acetate and butyrate. In autofermentation, hydrogen yield decreased from 51.4 ml H-2/g-DW to 11.0 ml H-2/g-DW with increasing substrate concentration from 1 g/l to 20 g/l. The main SMPs in the residual solutions from autofermentation were acetate and ethanol. The hydrogen production peak rate and hydrogen yield at 20 g/l of wet cyanobacterial biomass in heterofermentation showed 110- and 8.4-fold increases, respectively, relative to those in autofementation. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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