Sustainability of an in situ aided ...
Document type :
Compte-rendu et recension critique d'ouvrage
PMID :
Title :
Sustainability of an in situ aided phytostabilisation on highly contaminated soils using fly ashes: Effects on the vertical distribution of physicochemical parameters and trace elements
Author(s) :
Bidar, Géraldine [Auteur correspondant]
JUNIA [JUNIA]
Laboratoire de Génie Civil et Géo-Environnement (LGCgE) - ULR 4515 [LGCgE]
Waterlot, Christophe [Auteur]
JUNIA [JUNIA]
Laboratoire de Génie Civil et Géo-Environnement (LGCgE) - ULR 4515 [LGCgE]
Verdin, Anthony [Auteur]
Unité de Chimie Environnementale et Interactions sur le Vivant [UCEIV]
Proix, Nicolas [Auteur]
Laboratoire d'Analyses des Sols [LAS]
Courcot, Dominique [Auteur]
Unité de Chimie Environnementale et Interactions sur le Vivant [UCEIV]
Détriché, Sébastien [Auteur]
JUNIA [JUNIA]
Laboratoire de Génie Civil et Géo-Environnement (LGCgE) - ULR 4515 [LGCgE]
Fourrier, Hervé [Auteur]
Laboratoire de Génie Civil et Géo-Environnement (LGCgE) - ULR 4515 [LGCgE]
Richard, Antoine [Auteur]
Laboratoire d'Analyses des Sols [LAS]
Douay, Francis [Auteur]
JUNIA [JUNIA]
Laboratoire de Génie Civil et Géo-Environnement (LGCgE) - ULR 4515 [LGCgE]
JUNIA [JUNIA]
Laboratoire de Génie Civil et Géo-Environnement (LGCgE) - ULR 4515 [LGCgE]
Waterlot, Christophe [Auteur]
JUNIA [JUNIA]
Laboratoire de Génie Civil et Géo-Environnement (LGCgE) - ULR 4515 [LGCgE]
Verdin, Anthony [Auteur]
Unité de Chimie Environnementale et Interactions sur le Vivant [UCEIV]
Proix, Nicolas [Auteur]
Laboratoire d'Analyses des Sols [LAS]
Courcot, Dominique [Auteur]
Unité de Chimie Environnementale et Interactions sur le Vivant [UCEIV]
Détriché, Sébastien [Auteur]
JUNIA [JUNIA]
Laboratoire de Génie Civil et Géo-Environnement (LGCgE) - ULR 4515 [LGCgE]
Fourrier, Hervé [Auteur]
Laboratoire de Génie Civil et Géo-Environnement (LGCgE) - ULR 4515 [LGCgE]
Richard, Antoine [Auteur]
Laboratoire d'Analyses des Sols [LAS]
Douay, Francis [Auteur]
JUNIA [JUNIA]
Laboratoire de Génie Civil et Géo-Environnement (LGCgE) - ULR 4515 [LGCgE]
Journal title :
Journal of Environmental Management
Pages :
204-216
Publisher :
Elsevier
Publication date :
2016
ISSN :
0301-4797
Keyword(s) :
Aided phytostabilisation
Distribution
Soil profile
Distribution
Soil profile
English keyword(s) :
Fly ash
Trace element
Trace element
HAL domain(s) :
Sciences du Vivant [q-bio]
English abstract : [en]
Aided phytostabilisation using trees and fly ashes is a promising technique which has shown its effectiveness in the management of highly metal-contaminated soils. However, this success is generally established based on ...
Show more >Aided phytostabilisation using trees and fly ashes is a promising technique which has shown its effectiveness in the management of highly metal-contaminated soils. However, this success is generally established based on topsoil physicochemical analysis and short-term experiments. This paper focuses on the long-term effects of the afforestation and two fly ashes (silico-aluminous and sulfo-calcic called FA1 and FA2, respectively) by assessing the integrity of fly ashes 10 years after their incorporation into the soil as well as the vertical distribution of the physicochemical parameters and trace elements (TEs) in the amended soils (F1 and F2) in comparison with a non-amended soil (R). Ten years after the soil treatment, the particle size distribution analysis between fly ashes and their corresponding masses (fly ash + soil particles) showed a loss or an agglomeration of finer particles. This evolution matches with the appearance of gypsum (CaSO4 2H(2)O) in FA2m instead of anhydrite (CaSO4), which is the major compound of FA2. This finding corresponds well with the dissolution and the lixiviation of Ca, S and P included in FA2 along the F2 soil profile, generating an accumulation of these elements at 30 cm depth. However, no variation of TE contamination was found between 0 and 25 cm depth in F2 soil except for Cd. Conversely, Cd, Pb, Zn and Hg enrichment was observed at 25 cm depth in the F1 soil, whereas no enrichment was observed for As. The fly ashes studied, and notably FA2, were able to reduce Cd, Pb and Zn availability in soil and this capacity persists over the time despite their structural and chemical changes. (C) 2016 Elsevier Ltd. All rights reserved.Show less >
Show more >Aided phytostabilisation using trees and fly ashes is a promising technique which has shown its effectiveness in the management of highly metal-contaminated soils. However, this success is generally established based on topsoil physicochemical analysis and short-term experiments. This paper focuses on the long-term effects of the afforestation and two fly ashes (silico-aluminous and sulfo-calcic called FA1 and FA2, respectively) by assessing the integrity of fly ashes 10 years after their incorporation into the soil as well as the vertical distribution of the physicochemical parameters and trace elements (TEs) in the amended soils (F1 and F2) in comparison with a non-amended soil (R). Ten years after the soil treatment, the particle size distribution analysis between fly ashes and their corresponding masses (fly ash + soil particles) showed a loss or an agglomeration of finer particles. This evolution matches with the appearance of gypsum (CaSO4 2H(2)O) in FA2m instead of anhydrite (CaSO4), which is the major compound of FA2. This finding corresponds well with the dissolution and the lixiviation of Ca, S and P included in FA2 along the F2 soil profile, generating an accumulation of these elements at 30 cm depth. However, no variation of TE contamination was found between 0 and 25 cm depth in F2 soil except for Cd. Conversely, Cd, Pb, Zn and Hg enrichment was observed at 25 cm depth in the F1 soil, whereas no enrichment was observed for As. The fly ashes studied, and notably FA2, were able to reduce Cd, Pb and Zn availability in soil and this capacity persists over the time despite their structural and chemical changes. (C) 2016 Elsevier Ltd. All rights reserved.Show less >
Language :
Anglais
Popular science :
Non
Source :