Mesophilic anaerobic digestion of several types of spent livestock bedding in a batch leach-bed reactor substrate characterization and process performance

Mesophilic anaerobic digestion of several types of spent livestock bedding in a batch leach-bed reactor : substrate characterization and process performance

Copyright © 2016 Elsevier Ltd. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Waste management (New York, N.Y.). - 1999. - 59(2017) vom: 08. Jan., Seite 129-139
1. Verfasser: Riggio, S (VerfasserIn)
Weitere Verfasser: Torrijos, M, Debord, R, Esposito, G, van Hullebusch, E D, Steyer, J P, Escudié, R
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2017
Zugriff auf das übergeordnete Werk:Waste management (New York, N.Y.)
Schlagworte:Journal Article Dry anaerobic digestion Leach-bed reactor Percolation Process scale-up Spent livestock bedding Manure Methane OP0UW79H66
Beschreibung
Zusammenfassung:Copyright © 2016 Elsevier Ltd. All rights reserved.
Spent animal bedding is a valuable resource for green energy production in rural areas. The properties of six types of spent bedding collected from deep-litter stables, housing either sheeps, goats, horses or cows, were compared and their anaerobic digestion in a batch Leach-Bed Reactor (LBR) was assessed. Spent horse bedding, when compared to all the other types, appeared to differ the most due to a greater amount of straw added to the litter and a more frequent litter change. Total solids content appeared to vary significantly from one bedding type to another, with consequent impact on the methane produced from the raw substrate. However, all the types of spent bedding had similar VS/TS (82.3-88.9)%, a C/N well-suited to anaerobic digestion (20-28, except that of the horse, 42) and their BMPs were in a narrow range (192-239NmLCH4/gVS). The anaerobic digestion in each LBR was stable and the pH always remained higher than 6.6 regardless of the type of bedding. In contrast to all the other substrates, spent goat bedding showed a stronger acidification resulting in a methane production lag phase. Finally, spent bedding of different origins reached, on average, (89±11)% of their BMP after 60days of operation. This means that this waste is well-suited for treatment in LBRs and that this is a promising process to recover energy from dry agricultural waste
Beschreibung:Date Completed 10.05.2017
Date Revised 07.02.2018
published: Print-Electronic
Citation Status MEDLINE
ISSN:1879-2456
DOI:10.1016/j.wasman.2016.10.027