Monitoring the natural attenuation of a sewage sludge toxicity using the Allium cepa test
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.ecolind.2015.03.026 http://hdl.handle.net/11449/177339 |
Resumo: | Appropriate final disposal of sewage sludge (SS) generated by wastewater treatment plants (WWTP) has been considered a serious environmental problem, but also a viable alternative to be applied in agriculture, once SS is rich in organic matter and nutrients. However, SS can be a source of contamination of several toxic agents. Therefore, its use in agriculture requires special care to avoid possible damage to the environment and exposed organisms. Detoxification of toxic wastes can be performed using the monitored natural attenuation, which involves biological, physical and chemical processes that frequently occur in the environment. This study aimed to assess the feasibility of decontaminating SS after different periods of monitored natural attenuation. To this end, samples of SS and associations of soil/SS with proportions of 10, 25 and 50% SS were buried for 0, 2, 6 and 12 months in holes prepared in a place free of contamination. Allium cepa was used as an indicator to assess the efficiency of the natural attenuation process. According to chemical analysis, the SS samples presented a high concentration of m- and p-cresol, especially for samples analyzed after 0 or 2 months of natural attenuation. The microorganisms present in the SS belonged to 17 different genera of bacteria, which varied in the microbial composition among samples. Both, raw SS and aqueous SS extracts induced DNA damage in A. cepa, even when associated with soil. However, this effect was observed to decline during the attenuation period, although significant effects were detected for the highest tested concentration (100% SS) even at the end of this process. These results thus indicated the necessity of applying a stabilization process associating SS and soil for a period of at least 12 months and showed that the studied raw SS is not a viable material for use as a soil reconditioner, even after natural attenuation. A. cepa test proved to be a useful tool to assess the efficiency of SS detoxification process. Therefore, we suggest that the application of SS in agriculture should be approached with caution and that the SS must be previously submitted to methodologies that evaluate its toxic potential. |
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Monitoring the natural attenuation of a sewage sludge toxicity using the Allium cepa testChromosomal aberrationCytotoxicityGenotoxicityMicronucleusSolid wasteWaste managementAppropriate final disposal of sewage sludge (SS) generated by wastewater treatment plants (WWTP) has been considered a serious environmental problem, but also a viable alternative to be applied in agriculture, once SS is rich in organic matter and nutrients. However, SS can be a source of contamination of several toxic agents. Therefore, its use in agriculture requires special care to avoid possible damage to the environment and exposed organisms. Detoxification of toxic wastes can be performed using the monitored natural attenuation, which involves biological, physical and chemical processes that frequently occur in the environment. This study aimed to assess the feasibility of decontaminating SS after different periods of monitored natural attenuation. To this end, samples of SS and associations of soil/SS with proportions of 10, 25 and 50% SS were buried for 0, 2, 6 and 12 months in holes prepared in a place free of contamination. Allium cepa was used as an indicator to assess the efficiency of the natural attenuation process. According to chemical analysis, the SS samples presented a high concentration of m- and p-cresol, especially for samples analyzed after 0 or 2 months of natural attenuation. The microorganisms present in the SS belonged to 17 different genera of bacteria, which varied in the microbial composition among samples. Both, raw SS and aqueous SS extracts induced DNA damage in A. cepa, even when associated with soil. However, this effect was observed to decline during the attenuation period, although significant effects were detected for the highest tested concentration (100% SS) even at the end of this process. These results thus indicated the necessity of applying a stabilization process associating SS and soil for a period of at least 12 months and showed that the studied raw SS is not a viable material for use as a soil reconditioner, even after natural attenuation. A. cepa test proved to be a useful tool to assess the efficiency of SS detoxification process. Therefore, we suggest that the application of SS in agriculture should be approached with caution and that the SS must be previously submitted to methodologies that evaluate its toxic potential.Department of Biology, Institute of Biosciences, UNESP - Univ Estadual Paulista, Av. 24-A, 1515Department of Clinical Pathology, Faculty of Medical Sciences, State University of Campinas-UNICAMP, Rua Alexander Fleming, 105Department of Biology, Institute of Biosciences, UNESP - Univ Estadual Paulista, Av. 24-A, 1515Universidade Estadual Paulista (Unesp)Universidade Estadual de Campinas (UNICAMP)Mazzeo, Dânia Elisa Christofoletti [UNESP]Fernandes, Thaís Cristina Casimiro [UNESP]Levy, Carlos EmílioFontanetti, Carmem Silvia [UNESP]Marin-Morales, Maria Aparecida [UNESP]2018-12-11T17:25:01Z2018-12-11T17:25:01Z2015-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article60-69application/pdfhttp://dx.doi.org/10.1016/j.ecolind.2015.03.026Ecological Indicators, v. 56, p. 60-69.1470-160Xhttp://hdl.handle.net/11449/17733910.1016/j.ecolind.2015.03.0262-s2.0-849284739822-s2.0-84928473982.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEcological Indicatorsinfo:eu-repo/semantics/openAccess2023-12-27T06:17:58Zoai:repositorio.unesp.br:11449/177339Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:25:25.557177Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Monitoring the natural attenuation of a sewage sludge toxicity using the Allium cepa test |
title |
Monitoring the natural attenuation of a sewage sludge toxicity using the Allium cepa test |
spellingShingle |
Monitoring the natural attenuation of a sewage sludge toxicity using the Allium cepa test Mazzeo, Dânia Elisa Christofoletti [UNESP] Chromosomal aberration Cytotoxicity Genotoxicity Micronucleus Solid waste Waste management |
title_short |
Monitoring the natural attenuation of a sewage sludge toxicity using the Allium cepa test |
title_full |
Monitoring the natural attenuation of a sewage sludge toxicity using the Allium cepa test |
title_fullStr |
Monitoring the natural attenuation of a sewage sludge toxicity using the Allium cepa test |
title_full_unstemmed |
Monitoring the natural attenuation of a sewage sludge toxicity using the Allium cepa test |
title_sort |
Monitoring the natural attenuation of a sewage sludge toxicity using the Allium cepa test |
author |
Mazzeo, Dânia Elisa Christofoletti [UNESP] |
author_facet |
Mazzeo, Dânia Elisa Christofoletti [UNESP] Fernandes, Thaís Cristina Casimiro [UNESP] Levy, Carlos Emílio Fontanetti, Carmem Silvia [UNESP] Marin-Morales, Maria Aparecida [UNESP] |
author_role |
author |
author2 |
Fernandes, Thaís Cristina Casimiro [UNESP] Levy, Carlos Emílio Fontanetti, Carmem Silvia [UNESP] Marin-Morales, Maria Aparecida [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Estadual de Campinas (UNICAMP) |
dc.contributor.author.fl_str_mv |
Mazzeo, Dânia Elisa Christofoletti [UNESP] Fernandes, Thaís Cristina Casimiro [UNESP] Levy, Carlos Emílio Fontanetti, Carmem Silvia [UNESP] Marin-Morales, Maria Aparecida [UNESP] |
dc.subject.por.fl_str_mv |
Chromosomal aberration Cytotoxicity Genotoxicity Micronucleus Solid waste Waste management |
topic |
Chromosomal aberration Cytotoxicity Genotoxicity Micronucleus Solid waste Waste management |
description |
Appropriate final disposal of sewage sludge (SS) generated by wastewater treatment plants (WWTP) has been considered a serious environmental problem, but also a viable alternative to be applied in agriculture, once SS is rich in organic matter and nutrients. However, SS can be a source of contamination of several toxic agents. Therefore, its use in agriculture requires special care to avoid possible damage to the environment and exposed organisms. Detoxification of toxic wastes can be performed using the monitored natural attenuation, which involves biological, physical and chemical processes that frequently occur in the environment. This study aimed to assess the feasibility of decontaminating SS after different periods of monitored natural attenuation. To this end, samples of SS and associations of soil/SS with proportions of 10, 25 and 50% SS were buried for 0, 2, 6 and 12 months in holes prepared in a place free of contamination. Allium cepa was used as an indicator to assess the efficiency of the natural attenuation process. According to chemical analysis, the SS samples presented a high concentration of m- and p-cresol, especially for samples analyzed after 0 or 2 months of natural attenuation. The microorganisms present in the SS belonged to 17 different genera of bacteria, which varied in the microbial composition among samples. Both, raw SS and aqueous SS extracts induced DNA damage in A. cepa, even when associated with soil. However, this effect was observed to decline during the attenuation period, although significant effects were detected for the highest tested concentration (100% SS) even at the end of this process. These results thus indicated the necessity of applying a stabilization process associating SS and soil for a period of at least 12 months and showed that the studied raw SS is not a viable material for use as a soil reconditioner, even after natural attenuation. A. cepa test proved to be a useful tool to assess the efficiency of SS detoxification process. Therefore, we suggest that the application of SS in agriculture should be approached with caution and that the SS must be previously submitted to methodologies that evaluate its toxic potential. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-09-01 2018-12-11T17:25:01Z 2018-12-11T17:25:01Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.ecolind.2015.03.026 Ecological Indicators, v. 56, p. 60-69. 1470-160X http://hdl.handle.net/11449/177339 10.1016/j.ecolind.2015.03.026 2-s2.0-84928473982 2-s2.0-84928473982.pdf |
url |
http://dx.doi.org/10.1016/j.ecolind.2015.03.026 http://hdl.handle.net/11449/177339 |
identifier_str_mv |
Ecological Indicators, v. 56, p. 60-69. 1470-160X 10.1016/j.ecolind.2015.03.026 2-s2.0-84928473982 2-s2.0-84928473982.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Ecological Indicators |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
60-69 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808129318194249728 |