Rice straw- and rapeseed residue-derived biochars affect the geochemical fractions and phytoavailability of Cu and Pb to maize in a contaminated soil under different moisture content.
Biowastes
Lignocellulosic biomass
Pollution control
Potentially toxic elements
Pyrolysis
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 May 2019
01 May 2019
Historique:
received:
09
11
2018
revised:
19
01
2019
accepted:
07
02
2019
pubmed:
19
2
2019
medline:
26
9
2019
entrez:
19
2
2019
Statut:
ppublish
Résumé
Management of toxic elements contaminated upland and wetland soils using biochar is of great concern from both agricultural and environmental points of view. The impact of rice straw- and rapeseed residue-derived biochars produced under 300 °C and 550 °C (added to the soil at 2% and 5%; w/w) on the geochemical fractions, phytoavailability, and uptake of Cu and Pb in a contaminated mining soil under different moisture contents (80%, 60%, and 40% of soil field capacity) was investigated in a greenhouse pot experiment using maize. The higher rate of rice straw-derived biochar pyrolyzed at 550 °C caused a significant reduction in the mobile (soluble + exchangeable) fraction of Cu (59.42%) and Pb (75.4%) and increased the residual fractions of Cu (37.8%) and Pb (54.7%) in the treated soil under the highest moisture content (80%) as compared to the untreated soil. Therefore, this biochar significantly decreased the phytoavailability (CaCl
Identifiants
pubmed: 30776771
pii: S0301-4797(19)30198-7
doi: 10.1016/j.jenvman.2019.02.047
pii:
doi:
Substances chimiques
Soil
0
Soil Pollutants
0
biochar
0
Charcoal
16291-96-6
Lead
2P299V784P
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
5-14Informations de copyright
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