Effects of thermal pre-treatments on solid slaughterhouse waste methane potential
Visualitza/Obre
article en pdf (495,9Kb) (Accés restringit)
Sol·licita una còpia a l'autor
Què és aquest botó?
Aquest botó permet demanar una còpia d'un document restringit a l'autor. Es mostra quan:
- Disposem del correu electrònic de l'autor
- El document té una mida inferior a 20 Mb
- Es tracta d'un document d'accés restringit per decisió de l'autor o d'un document d'accés restringit per política de l'editorial
Estadístiques de LA Referencia / Recolecta
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/12483
Tipus de documentArticle
Data publicació2011-03
Condicions d'accésAccés restringit per política de l'editorial
Tots els drets reservats. Aquesta obra està protegida pels drets de propietat intel·lectual i
industrial corresponents. Sense perjudici de les exempcions legals existents, queda prohibida la seva
reproducció, distribució, comunicació pública o transformació sense l'autorització del titular dels drets
Abstract
The effects of thermal pre-treatments on the biogas production potential of two solid slaughterhouse waste types (poultry and piggery slaughterhouse by-products) were assessed by means of batch experiments.
Both animal by-products were characterized in terms of fat, protein and carbohydrate concentrations. The selected thermal pre-treatments, pasteurization (70 ºC for 60 min) and sterilization (133 ºC and
3 bars for 20 min), are included in the current European regulations for the disposal or use of animal byproducts.
The pre-treatments produced notable improvements in organic matter solubilization, but had different effects on the anaerobic bioavailability of the treated substrates. The methane yield of the initial
volatile solids did not increase significantly after pre-treatment when carbohydrate concentration was high, reaching a maximum of 0:48 m3 CH4 kg1 VS for the pasteurized poultry waste. However, this yield increased by up to 52.7% after pasteurization and 66.1% after sterilization for the lower carbohydrate concentration sample (piggery waste), reaching maxima of 0.88 and 0:96 m3
CH4 kg 1 VS , respectively. The maximum
methane production rates, measured as the maximum slope of the accumulated methane
production curve, per unit of initial biomass content, were also different. While this rate increased by 52.6% and 211.6% for piggery waste after pasteurization and sterilization, respectively, it decreased by
43.8% for poultry waste after pasteurization with respect to untreated waste. Compounds with low biodegradability that are produced by Maillard reactions during thermal pre-treatment could explain the low bioavailability observed for waste with a high carbohydrate concentration.
CitacióRodríguez-Abalde, Á. [et al.]. Effects of thermal pre-treatments on solid slaughterhouse waste methane potential. "Waste management", Març 2011, vol. 31, núm. 3, p. 1488-1493.
ISSN0956-053X
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
WM7939.pdf | article en pdf | 495,9Kb | Accés restringit |