Please use this identifier to cite or link to this item: https://repositorio.inpa.gov.br/handle/1/16724
Title: Organic residues and biochar to immobilize potentially toxic elements in soil from a gold mine in the Amazon
Authors: Souza, Edna Santos de
Dias, Yan Nunes
Costa, Hercília Samara Cardoso da
Pinto, Duane Azevedo
Oliveira, Danielle Monteiro de
Falcão, Newton Paulo de Souza
Teixeira, Renato Alves
Fernandes, Antônio Rodrigues
Keywords: Barium
Gold
Lead
Nickel
Organic Matter
Phosphorus
Toxic Substance
Biochar
Charcoal
Heavy Metal
Biochar
Heavy Metal
Immobilization
Organic Pollutant
Phytoremediation
Soil Amendment
Soil Pollution
Soil Remediation
Amazonas
Biomass
Controlled Study
Immobilization
Lettuce
Mining
Nonhuman
Organic Waste
Physical Chemistry
Plant Growth
Plant Response
Soil Acidity
Soil Chemistry
Soil Pollution
Analysis
Chemistry
Growth, Development And Aging
Human
Soil
Soil Pollutant
Waste
Bertholletia Excelsa
Lactuca
Charcoal
Gold
Humans
Lettuce
Heavy Metals
Mining
Soil
Soil Pollutants
Waste Products
Issue Date: 2019
metadata.dc.publisher.journal: Ecotoxicology and Environmental Safety
metadata.dc.relation.ispartof: Volume 169, Pags. 425-434
Abstract: Waste from gold mining (Au) is a threat to the ecosystem and human health because it contains high levels of potentially toxic elements (PTEs). Organic waste and biochar can be used to recover contaminated soils from mining areas because they have the potential to immobilize PTEs and improve soil fertility, enabling revegetation. The objective of this study was to investigate the efficiency with which organic residues and biochar immobilize PTEs in a multicontaminated soil of a small-scale Au mine in the state of Pará. The soil from a gold mining area was mixed with different proportions (v/v) of coffee ground residues (Bcoffee), Brazil nut tegument residues (BN), açai palm stone residues (A), and Brazil nuts biochar residues to determine which treatment is best for immobilizing PTEs. The treatments with the addition of BN and A resulted in low pH and high contents of organic matter (OM) and phosphor (P) The BN increased the available levels of Ba and reduced the available levels of Ni. The addition of coffee ground residues and biochar increased the uptake of Ba, Pb, and Ni in lettuce plants compared to treatments with BN and A. Plants grown with A showed higher dry matter yield and lower absorption and translocation of PTEs. Thus, the addition of BN and A residues in PTE phytostabilization programs in PTE-multicontaminated soils is a potential possibility. © 2018 Elsevier Inc.
metadata.dc.identifier.doi: 10.1016/j.ecoenv.2018.11.032
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