Soil restoration using compost-like-outputs and digestates from non-source-separated urban waste as organic amendments: Limitations and opportunities.
Bio-wastes
Compost impurities
Ecotoxicity risk
Mechanical-biological treatment plants
Stability degree
Technosol
Journal
Journal of environmental management
ISSN: 1095-8630
Titre abrégé: J Environ Manage
Pays: England
ID NLM: 0401664
Informations de publication
Date de publication:
01 Feb 2020
01 Feb 2020
Historique:
received:
16
09
2019
revised:
14
11
2019
accepted:
19
11
2019
entrez:
18
2
2020
pubmed:
18
2
2020
medline:
19
2
2020
Statut:
ppublish
Résumé
Soil rehabilitation in the context of the restoration of quarries, dumping sites, or road slopes often requires the prior addition of organic amendments to improve the substrates used for Technosol construction. Bio-wastes coming from advanced Mechanical-Biological Treatment Plants, mainly compost-like-outputs (CLO) and digestates (DGT), are new and suitable sources of organic matter potentially useful as organic amendments for this purpose, in an approach clearly fulfilling the principles of circular economy. In order to assess the suitability of these materials, a complete physicochemical and biological evaluation was carried out, including an ecotoxicological evaluation to discard hazardous effects on key soil fauna groups. Field experiments were also carried out on several road slopes and a dumping site. The stability degree of organic matter and the impurities content could be restricting parameters for the use of CLO in soils. Low stability degree decreased plant development in the initial stages of restoration. Moreover, the high heterogeneity in terms of physicochemical parameters of the different CLOs assessed is a serious constraint to making generalizations about its use. In contrast, composition of DGTs was more stable between plants and batches, and presented low impurities and high N contents that make them more suitable for applying to soil and promoting plant development. Regarding the application rates, DGT application at 20 g kg
Identifiants
pubmed: 32063303
pii: S0301-4797(19)31627-5
doi: 10.1016/j.jenvman.2019.109909
pii:
doi:
Substances chimiques
Soil
0
Soil Pollutants
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
109909Informations de copyright
Copyright © 2019 Elsevier Ltd. All rights reserved.