Hydrodynamic behaviors in fermentative hydrogen bioreactors by pressure fluctuation analysis
| Autor: | Shu Y. Wu, Ying C. Wu, Chen Y. Chu, Chiu Y. Lin |
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| Rok vydání: | 2010 |
| Předmět: |
Environmental Engineering
Materials science Time Factors Hydrogen Bubble Flow (psychology) chemistry.chemical_element Bioengineering Bioreactors Biogas Slugging Bioreactor Pressure Anaerobiosis Waste Management and Disposal Biogas production Renewable Energy Sustainability and the Environment Environmental engineering General Medicine Mechanics chemistry Biofuels Fermentation Hydrodynamics Rheology Biotechnology |
| Zdroj: | Bioresource technology. 102(18) |
| ISSN: | 1873-2976 |
| Popis: | Three bioreactor configurations were employed in these investigations, which consisted of working volumes of 10, 1.2 and 1.2 L. Power spectrum diagrams of bed pressure fluctuation were used with hydraulic retention times (HRT) and geometric factors to identify the flow regimes in the bioreactors, where HRT varied from 8 to 1 h. It was found that the flow regimes in the bioreactors changed from a dispersed regime to coalesced and slugging regimes, when the biogas production rate (BPR) increased, as a result of decreasing the operating HRT. The flow regime was a dispersed bubble regime when the HRT was higher than 4 h in the bioreactor, whereas when the HRT was 2 h the coalesced bubble phenomena occurred in the bioreactor. A slugging regime was found when the HRT was lower than 1 h in thinner bioreactor. |
| Databáze: | OpenAIRE |
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