Back to Search
Start Over
Bactericidal effect of long chain fatty acids in anaerobic digestion
- Source :
- Water Environment Research 66 (1994), Water Environment Research, 66, 40-49
- Publication Year :
- 1994
-
Abstract
- The effect of shock loads of long chain fatty acids (LCFA) on the activity of granular methanogenic sludge was studied with capric acid as model substrate. The results show that inhibition is primarily related to the LCF concentration; the LCFA:biomass ratio is less important. A lethal threshold LCFA concentration can be distinguished in reactors with identical physical and chemical conditions and inoculum properties: the acetogenic and methanogenic population is killed virtually completely when the concentration exceeds 6.7 to 9.0 mol/m 3 capric acid. The observed variation in the threshold level may be attributable to differences in mass transfer rate from liquid to granules in different experiments. At most, 0.2% of the acetotrophic methanogens survives, when the LCFA concentration in a methanogenic digester exceeds the lethal threshold level
- Subjects :
- animal structures
lozing
Methanogenesis
Population
Concentration effect
disposal
Sectie Proceskunde
Sub-department of Food and Bioprocess Engineering
rioolslib
Environmental Chemistry
Food science
education
Waste Management and Disposal
Water Science and Technology
education.field_of_study
sewage sludge
Chemistry
Ecological Modeling
Substrate (chemistry)
Pollution
sludges
Anaerobic digestion
Activated sludge
drijfmest
verwerking
Biochemistry
Capric Acid
slurries
lipids (amino acids, peptides, and proteins)
processing
bewerking
Digestion
slib
handling
Subjects
Details
- Language :
- English
- ISSN :
- 10614303
- Volume :
- 66
- Database :
- OpenAIRE
- Journal :
- Water Environment Research
- Accession number :
- edsair.doi.dedup.....a9044090d84a01571060478b902b772c
- Full Text :
- https://doi.org/10.2175/wer.66.1.7