Organic residues as immobilizing agents in aided phytostabilization: (I) Effects on soil chemical characteristics

Detalhes bibliográficos
Autor(a) principal: Alvarenga, Paula
Data de Publicação: 2009
Outros Autores: Gonçalves, A. P., Fernandes, R.M., Varennes, A., Vallini, G., Duarte, E., Cunha-Queda, A. C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/20.500.12207/582
Resumo: A greenhouse experiment was conducted to evaluate the effect of three different organic residues, sewage sludge (SS), municipal solid waste compost (MSWC), and garden waste compost (GWC), as immobilizing agents in aided phytostabilization of a highly acidic metal-contaminated soil, affected by mining activities, using perennial ryegrass (Lolium perenne L.). The organic residues were applied at 25, 50 and 100 Mg ha−1 (dry weight basis), and their effects on soil chemical characteristics and on relative plant growth and metal concentrations were assessed. All the organic residues tested immobilized Cu, Pb and Zn, decreasing their mobile fractions. This was corroborated by negative correlations obtained between mobile Cu, Pb and Zn and other soil chemical characteristics, which rose as a consequence of the amendments applied (i.e., pH, electrical conductivity, organic matter, nitrogen content, available P and available K), and by the multivariate exploratory techniques performed that showed an inverse correlation between these groups of variables. The greatest increase in ryegrass relative growth (more than three times) was obtained in the presence of 50 Mg MSWC ha−1, followed by SS at the same application dosage. GWC did not contribute to an increase in shoot growth, due to its small capacity to correct soil acidity and to supply essential macronutrients (N, P, K). No extractant was able of demonstrating by a linear correlation the uptake of Cu, Pb and Zn by ryegrass. This plant was therefore not a good “indicator” of Cu, Pb and Zn availability in the soil. The results obtained in this study suggest that ryegrass can be used in aided phytostabilization for this type of mine contaminated soils and that MSWC, and to a minor extent SS, applied at 50 Mg ha−1, were effective in the in situ immobilization of metals, improving soil chemical properties and leading to a large increase in plant biomass.
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spelling Organic residues as immobilizing agents in aided phytostabilization: (I) Effects on soil chemical characteristicsMetal-contaminated soilCompostSewage sludgeAided phytostabilizationBioavailabilitySpeciationA greenhouse experiment was conducted to evaluate the effect of three different organic residues, sewage sludge (SS), municipal solid waste compost (MSWC), and garden waste compost (GWC), as immobilizing agents in aided phytostabilization of a highly acidic metal-contaminated soil, affected by mining activities, using perennial ryegrass (Lolium perenne L.). The organic residues were applied at 25, 50 and 100 Mg ha−1 (dry weight basis), and their effects on soil chemical characteristics and on relative plant growth and metal concentrations were assessed. All the organic residues tested immobilized Cu, Pb and Zn, decreasing their mobile fractions. This was corroborated by negative correlations obtained between mobile Cu, Pb and Zn and other soil chemical characteristics, which rose as a consequence of the amendments applied (i.e., pH, electrical conductivity, organic matter, nitrogen content, available P and available K), and by the multivariate exploratory techniques performed that showed an inverse correlation between these groups of variables. The greatest increase in ryegrass relative growth (more than three times) was obtained in the presence of 50 Mg MSWC ha−1, followed by SS at the same application dosage. GWC did not contribute to an increase in shoot growth, due to its small capacity to correct soil acidity and to supply essential macronutrients (N, P, K). No extractant was able of demonstrating by a linear correlation the uptake of Cu, Pb and Zn by ryegrass. This plant was therefore not a good “indicator” of Cu, Pb and Zn availability in the soil. The results obtained in this study suggest that ryegrass can be used in aided phytostabilization for this type of mine contaminated soils and that MSWC, and to a minor extent SS, applied at 50 Mg ha−1, were effective in the in situ immobilization of metals, improving soil chemical properties and leading to a large increase in plant biomass.Elsevier2013-11-15T12:09:58Z2013-10-01T00:00:00Z2009-03-01T00:00:00Z2009-03-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/20.500.12207/582eng0045-6535metadata only accessinfo:eu-repo/semantics/openAccessAlvarenga, PaulaGonçalves, A. P.Fernandes, R.M.Varennes, A.Vallini, G.Duarte, E.Cunha-Queda, A. C.reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-06-23T07:46:26Zoai:repositorio.ipbeja.pt:20.500.12207/582Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T14:58:14.159189Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Organic residues as immobilizing agents in aided phytostabilization: (I) Effects on soil chemical characteristics
title Organic residues as immobilizing agents in aided phytostabilization: (I) Effects on soil chemical characteristics
spellingShingle Organic residues as immobilizing agents in aided phytostabilization: (I) Effects on soil chemical characteristics
Alvarenga, Paula
Metal-contaminated soil
Compost
Sewage sludge
Aided phytostabilization
Bioavailability
Speciation
title_short Organic residues as immobilizing agents in aided phytostabilization: (I) Effects on soil chemical characteristics
title_full Organic residues as immobilizing agents in aided phytostabilization: (I) Effects on soil chemical characteristics
title_fullStr Organic residues as immobilizing agents in aided phytostabilization: (I) Effects on soil chemical characteristics
title_full_unstemmed Organic residues as immobilizing agents in aided phytostabilization: (I) Effects on soil chemical characteristics
title_sort Organic residues as immobilizing agents in aided phytostabilization: (I) Effects on soil chemical characteristics
author Alvarenga, Paula
author_facet Alvarenga, Paula
Gonçalves, A. P.
Fernandes, R.M.
Varennes, A.
Vallini, G.
Duarte, E.
Cunha-Queda, A. C.
author_role author
author2 Gonçalves, A. P.
Fernandes, R.M.
Varennes, A.
Vallini, G.
Duarte, E.
Cunha-Queda, A. C.
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Alvarenga, Paula
Gonçalves, A. P.
Fernandes, R.M.
Varennes, A.
Vallini, G.
Duarte, E.
Cunha-Queda, A. C.
dc.subject.por.fl_str_mv Metal-contaminated soil
Compost
Sewage sludge
Aided phytostabilization
Bioavailability
Speciation
topic Metal-contaminated soil
Compost
Sewage sludge
Aided phytostabilization
Bioavailability
Speciation
description A greenhouse experiment was conducted to evaluate the effect of three different organic residues, sewage sludge (SS), municipal solid waste compost (MSWC), and garden waste compost (GWC), as immobilizing agents in aided phytostabilization of a highly acidic metal-contaminated soil, affected by mining activities, using perennial ryegrass (Lolium perenne L.). The organic residues were applied at 25, 50 and 100 Mg ha−1 (dry weight basis), and their effects on soil chemical characteristics and on relative plant growth and metal concentrations were assessed. All the organic residues tested immobilized Cu, Pb and Zn, decreasing their mobile fractions. This was corroborated by negative correlations obtained between mobile Cu, Pb and Zn and other soil chemical characteristics, which rose as a consequence of the amendments applied (i.e., pH, electrical conductivity, organic matter, nitrogen content, available P and available K), and by the multivariate exploratory techniques performed that showed an inverse correlation between these groups of variables. The greatest increase in ryegrass relative growth (more than three times) was obtained in the presence of 50 Mg MSWC ha−1, followed by SS at the same application dosage. GWC did not contribute to an increase in shoot growth, due to its small capacity to correct soil acidity and to supply essential macronutrients (N, P, K). No extractant was able of demonstrating by a linear correlation the uptake of Cu, Pb and Zn by ryegrass. This plant was therefore not a good “indicator” of Cu, Pb and Zn availability in the soil. The results obtained in this study suggest that ryegrass can be used in aided phytostabilization for this type of mine contaminated soils and that MSWC, and to a minor extent SS, applied at 50 Mg ha−1, were effective in the in situ immobilization of metals, improving soil chemical properties and leading to a large increase in plant biomass.
publishDate 2009
dc.date.none.fl_str_mv 2009-03-01T00:00:00Z
2009-03-01T00:00:00Z
2013-11-15T12:09:58Z
2013-10-01T00:00:00Z
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/20.500.12207/582
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dc.publisher.none.fl_str_mv Elsevier
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