Hydrodynamic behaviors in fermentative hydrogen bioreactors by pressure fluctuation analysis.
Bioresour Technol
; 102(18): 8669-75, 2011 Sep.
Article
in En
| MEDLINE
| ID: mdl-21435862
ABSTRACT
Three bioreactor configurations were employed in these investigations, which consisted of working volumes of 10, 1.2 and 1.2L. 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 1h. 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 4h in the bioreactor, whereas when the HRT was 2h the coalesced bubble phenomena occurred in the bioreactor. A slugging regime was found when the HRT was lower than 1h in thinner bioreactor.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pressure
/
Biotechnology
/
Bioreactors
/
Fermentation
/
Hydrodynamics
/
Hydrogen
Type of study:
Prognostic_studies
Language:
En
Journal:
Bioresour Technol
Journal subject:
ENGENHARIA BIOMEDICA
Year:
2011
Document type:
Article
Affiliation country:
Taiwán