Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
681792 | Bioresource Technology | 2011 | 7 Pages |
Abstract
Three bioreactor configurations were employed in these investigations, which consisted of working volumes of 10, 1.2 and 1.2Â 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 1Â 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 4Â h in the bioreactor, whereas when the HRT was 2Â h the coalesced bubble phenomena occurred in the bioreactor. A slugging regime was found when the HRT was lower than 1Â h in thinner bioreactor.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Process Chemistry and Technology
Authors
Chen Y. Chu, Shu Y. Wu, Ying C. Wu, Chiu Y. Lin,