Self-sustaining treatment as a novel alternative for the stabilization of anaerobic digestate.
Anaerobic digestion
Ash
Moisture content
Post-treatment
Smouldering combustion
Journal
Journal of environmental management
ISSN: 1095-8630
Titre abrégé: J Environ Manage
Pays: England
ID NLM: 0401664
Informations de publication
Date de publication:
15 Jun 2020
15 Jun 2020
Historique:
received:
13
12
2019
revised:
28
03
2020
accepted:
29
03
2020
pubmed:
7
4
2020
medline:
7
5
2020
entrez:
7
4
2020
Statut:
ppublish
Résumé
Self-sustaining smouldering combustion (SSS) is a technology based on the flameless oxidation of an organic substrate and limited by the rate at which oxygen is diffused to the surface of the substrate. This work aims to evaluate the SSS combustion as a treatment process for the stabilization of anaerobic digestate, determining the limits of operational conditions, (moisture content (MC), air flux) that allow for a self-sustaining process. Maximum possible MC was found at 82 wt% with Darcy air flux of 50 cm/s. The digestate destruction rate (kg/(h·m2), and the addition of sand as an inert solid, to enhance the oxygen diffusion, were also investigated. A sand/substrate mass ratio of 1 allowed for SSS at 85 wt% MC, but decreased the digestate destruction rate. The average composition of the emitted gases showed ca. 25% CO and 10% H
Identifiants
pubmed: 32250925
pii: S0301-4797(20)30477-1
doi: 10.1016/j.jenvman.2020.110544
pii:
doi:
Substances chimiques
Gases
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
110544Informations de copyright
Copyright © 2020 Elsevier Ltd. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.