Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 35, Issue 9, Pages 4092-4102Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2010.02.030
Keywords
Biohydrogen production; Cassava wastewater; Anaerobic sequencing batch reactor; Cycle time; COD:N ratio
Categories
Ask authors/readers for more resources
In this work, hydrogen production from cassava wastewater using anaerobic sequencing batch reactors (ASBR) was investigated to determine the optimum number of cycles per day, chemical oxygen demand (COD) loading rate, and COD:N ratio. The system operated at a COD loading rate of 30 kg/m(3)d and 6 cycles per day provided maximum hydrogen production performance in terms of specific hydrogen production rate (SHPR) (388 ml H-2/g VSS d or 3800 ml H-2/l d) and hydrogen yield (186 ml H-2/g COD removed). The effect of nitrogen supplementation was also studied by adding NH4HCO3 into the system at the COD:N ratios of 100:2.2, 100:3.3, and 100:4.4 under the COD loading rate of 30 kg/m(3)d and 6 cycles per day. The maximum SHPR and hydrogen yield of 524 ml H-2/g VSS d (5680 ml H-2/l d) and 438 ml H-2/g COD removed, respectively, were obtained at the stoichiometric COD:N ratio of 100:2.2. An excess nitrogen was found to promote the productions of higher organic acids and ethanol, resulting in lowering hydrogen production efficiency. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available