Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7724388 | International Journal of Hydrogen Energy | 2011 | 7 Pages |
Abstract
Batch dark fermentation experiments were performed to investigate the effects of biomass and substrate concentration on bio-hydrogen production from acid hydrolyzed ground wheat at 55 °C. In the first set of experiments, the substrate concentration was constant at 20 g total sugar Lâ1 and biomass concentration was varied between 0.52 and 2.58 g Lâ1. Total sugar concentration was varied between 4.2 and 23.7 g Lâ1 in the second set of experiments with a 1.5 g Lâ1 constant biomass concentration. The highest cumulative hydrogen formation (582 mL, 30 °C, 1 atm), formation rate (5.43 mL hâ1) and final total volatile fatty acid (TVFA) concentration (6.54 g Lâ1) were obtained with 1.32 g Lâ1 biomass concentration. In variable substrate concentration experiments, the highest cumulative hydrogen (365 mL) and TVFA concentration (4.8 g Lâ1) were obtained with 19.25 g Lâ1 initial total sugar concentration while hydrogen gas formation rate (12.95 mL hâ1) and the yield (200 mL H2 gâ1 total sugar) were the highest with 4.2 g Lâ1 total sugar concentration.
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Authors
Serpil Ozmihci, Fikret Kargi, Ayse Cakir,