Anaerobic batch degradation of solid poultry slaughterhouse waste

We studied anaerobic batch degradation of solid poultry slaughterhouse wastes with different initial waste and inoculum concentrations and waste-to-inoculum ratios and simulated the dynamics of the process with a new generation model. Our modelling results suggest that inhibited propionate degradati...

Full description

Saved in:
Bibliographic Details
Published in:Water science and technology 2000-01, Vol.41 (3), p.33-41
Main Authors: Salminen, E, Rintala, J, Lokshina, L Y, Vavilin, V A
Format: Article
Language:English
Subjects:
Abattoirs
Ammonia
Ammonification
Animals
Bacteria
Bacteria, Anaerobic - metabolism
Biodegradation, Environmental
Biomass
Carbon dioxide
Computer Simulation
Degradation
Dynamics
Environmental impact
Fatty acids
Fatty Acids, Nonesterified - analysis
Fatty Acids, Volatile - analysis
Hydrogen
Incubation period
Inoculum
Lipids
Methane
Methane - analysis
Microorganisms
Modelling
Models, Biological
Palmitic acid
Poultry
Poultry - metabolism
Propionic acid
Proteins
Ratios
Refuse Disposal - methods
Sensors
Citations: Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We studied anaerobic batch degradation of solid poultry slaughterhouse wastes with different initial waste and inoculum concentrations and waste-to-inoculum ratios and simulated the dynamics of the process with a new generation model. Our modelling results suggest that inhibited propionate degradation by long-chain fatty acids (LCFA) and inhibited hydrolysis by a high propionate concentration constituted the rate-limiting step in the waste degradation. Palmitate was the most abundant LCFA in the assays. Within 27 days of incubation, up to 0.55 to 0.67 m3 of methane (STP)/kg VS added was produced under the studied conditions. Lower waste-to-inoculum ratios exhibited a faster onset and rate of specific methane production. In all the assays, ammonification occurred within 3 to 6 days and accounted for 50 to 60% of total nitrogen.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2000.0053