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
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

109909

Informations de copyright

Copyright © 2019 Elsevier Ltd. All rights reserved.

Auteurs

Vicenç Carabassa (V)

CREAF, E08193 Bellaterra (Cerdanyola del Vallès), Catalonia, Spain; Universitat Autònoma de Barcelona, E08193 Bellaterra (Cerdanyola del Vallès), Catalonia, Spain. Electronic address: v.carabassa@creaf.uab.cat.

Xavier Domene (X)

CREAF, E08193 Bellaterra (Cerdanyola del Vallès), Catalonia, Spain; Universitat Autònoma de Barcelona, E08193 Bellaterra (Cerdanyola del Vallès), Catalonia, Spain.

Josep M Alcañiz (JM)

CREAF, E08193 Bellaterra (Cerdanyola del Vallès), Catalonia, Spain; Universitat Autònoma de Barcelona, E08193 Bellaterra (Cerdanyola del Vallès), Catalonia, Spain.

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Classifications MeSH