Factors Affecting Hydrogen Production from Food Wastes by Clostridium-Rich Composts
Publication: Journal of Environmental Engineering
Volume 131, Issue 4
Abstract
This study used the technique of response surface approach to analyze the combined effects of heat-shocking temperature and time on anaerobic grass composts. Results indicate that the grass composts under heat-shocking temperature and time of and , respectively, could yield high populations of hydrogen-producing microorganisms. Metabolic results demonstrate that the composts are reliable, having considerable hydrogen-producing Clostridia. The multivariate analysis with response surface by considering specific hydrogen-producing potential and rate simultaneously indicate that the cultural media with ; ; and were optimal for the hydrogen-producing Clostridia-rich composts using high-solids food wastes. The specific hydrogen production potential and rate were and , respectively. The former was 38% of theoretical hydrogen-producing potential of Clostridium sp. using glucose. Of these factors, ammonium and phosphate are nutrients for the hydrogen-producing Clostridia growth while iron exerts a synergistic influence on them in the conversion of the food wastes into hydrogen.
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Acknowledgment
The writers thank the Bureau of Energy Commissions, Ministry of Economic Affairs of the Republic of China, for financial support of this work.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 131 • Issue 4 • April 2005
Pages: 595 - 602
Copyright
© 2005 ASCE.
History
Received: Jan 21, 2003
Accepted: May 17, 2004
Published online: Apr 1, 2005
Published in print: Apr 2005
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