Degradation and detoxification of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) by an indigenous Delftia sp. strain in batch and continuous systems
- Autores
- González, Ana Julieta; Gallego, Alfredo; Gemini, V. L.; Papalia, Mariana Andrea; Radice, Marcela Alejandra; Gutkind, Gabriel Osvaldo; Planes, Estela; Korol, Sonia Edith
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- An indigenous bacterial strain capable of utilizing 2,4-dichlorophenoxyacetic acid (2,4-D) as the sole carbon and energy source was isolated from a polluted river in Buenos Aires, Argentina. The strain was identified as Delftia sp. by the 16S rRNA gene sequencing. Aerobic biodegradation assays in batch process were performed using a 2 L volume microfermentor at 28 C with agitation (200 rpm). The continuousflow system employed consists in a down-flow fixed-bed reactor, using polyurethane foam cubes as a support for immobilizing bacterial cells. Degradation of 2,4-D was evaluated by UV spectrophotometry, chemical oxygen demand (COD) and gas chromatography (GC). In the batch reactor microbial growth was measured by the plate count method. Biofilm development on polyurethane foam was observed by scanning electronic microscopy. Detoxification was assessed by using seeds toxicity tests. Under batch conditions Delftia sp. was able to degrade 100 and 200 mg L1 of 2,4-D in 24 and 28 h respectively. Compound and COD removals were 99.9% and 91.3% respectively at an initial 2,4-D concentration of 100 mg L1, and 99.0% and 89.4% when 2,4-D concentration was increased to 200 mg L1. When assays were performed in the continuous-flow reactor under operating conditions 2,4-D and COD removals of 99.6% and 90.8% were achieved, respectively. Toxicity was neither detected at the end of the batch process nor in the continuous-flow reactor effluent.
Fil: González, Ana Julieta. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Sanidad, Nutrición, Bromatología y Toxicología. Cátedra de Higiene y Sanidad; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Gallego, Alfredo. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Sanidad, Nutrición, Bromatología y Toxicología. Cátedra de Higiene y Sanidad; Argentina
Fil: Gemini, V. L.. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Sanidad, Nutrición, Bromatología y Toxicología. Cátedra de Higiene y Sanidad; Argentina
Fil: Papalia, Mariana Andrea. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Microbiología, Inmunología y Biotecnología. Cátedra de Microbiología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Radice, Marcela Alejandra. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Microbiología, Inmunología y Biotecnología. Cátedra de Microbiología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Gutkind, Gabriel Osvaldo. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Microbiología, Inmunología y Biotecnología. Cátedra de Microbiología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Planes, Estela. Instituto Nacional de Tecnología Industrial; Argentina
Fil: Korol, Sonia Edith. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Sanidad, Nutrición, Bromatología y Toxicología. Cátedra de Higiene y Sanidad; Argentina - Materia
-
2,4-D
Delftia sp.
Biodegradation
Detoxification
Continuous reactor - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/268919
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Degradation and detoxification of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) by an indigenous Delftia sp. strain in batch and continuous systemsGonzález, Ana JulietaGallego, AlfredoGemini, V. L.Papalia, Mariana AndreaRadice, Marcela AlejandraGutkind, Gabriel OsvaldoPlanes, EstelaKorol, Sonia Edith2,4-DDelftia sp.BiodegradationDetoxificationContinuous reactorhttps://purl.org/becyt/ford/2.8https://purl.org/becyt/ford/2An indigenous bacterial strain capable of utilizing 2,4-dichlorophenoxyacetic acid (2,4-D) as the sole carbon and energy source was isolated from a polluted river in Buenos Aires, Argentina. The strain was identified as Delftia sp. by the 16S rRNA gene sequencing. Aerobic biodegradation assays in batch process were performed using a 2 L volume microfermentor at 28 C with agitation (200 rpm). The continuousflow system employed consists in a down-flow fixed-bed reactor, using polyurethane foam cubes as a support for immobilizing bacterial cells. Degradation of 2,4-D was evaluated by UV spectrophotometry, chemical oxygen demand (COD) and gas chromatography (GC). In the batch reactor microbial growth was measured by the plate count method. Biofilm development on polyurethane foam was observed by scanning electronic microscopy. Detoxification was assessed by using seeds toxicity tests. Under batch conditions Delftia sp. was able to degrade 100 and 200 mg L1 of 2,4-D in 24 and 28 h respectively. Compound and COD removals were 99.9% and 91.3% respectively at an initial 2,4-D concentration of 100 mg L1, and 99.0% and 89.4% when 2,4-D concentration was increased to 200 mg L1. When assays were performed in the continuous-flow reactor under operating conditions 2,4-D and COD removals of 99.6% and 90.8% were achieved, respectively. Toxicity was neither detected at the end of the batch process nor in the continuous-flow reactor effluent.Fil: González, Ana Julieta. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Sanidad, Nutrición, Bromatología y Toxicología. Cátedra de Higiene y Sanidad; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Gallego, Alfredo. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Sanidad, Nutrición, Bromatología y Toxicología. Cátedra de Higiene y Sanidad; ArgentinaFil: Gemini, V. L.. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Sanidad, Nutrición, Bromatología y Toxicología. Cátedra de Higiene y Sanidad; ArgentinaFil: Papalia, Mariana Andrea. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Microbiología, Inmunología y Biotecnología. Cátedra de Microbiología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Radice, Marcela Alejandra. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Microbiología, Inmunología y Biotecnología. Cátedra de Microbiología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Gutkind, Gabriel Osvaldo. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Microbiología, Inmunología y Biotecnología. Cátedra de Microbiología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Planes, Estela. Instituto Nacional de Tecnología Industrial; ArgentinaFil: Korol, Sonia Edith. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Sanidad, Nutrición, Bromatología y Toxicología. Cátedra de Higiene y Sanidad; ArgentinaElsevier2012-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/268919González, Ana Julieta; Gallego, Alfredo; Gemini, V. L.; Papalia, Mariana Andrea; Radice, Marcela Alejandra; et al.; Degradation and detoxification of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) by an indigenous Delftia sp. strain in batch and continuous systems; Elsevier; International Biodeterioration and Biodegradation; 66; 1; 1-2012; 8-130964-8305CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S096483051100206Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.ibiod.2011.09.010info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:28:12Zoai:ri.conicet.gov.ar:11336/268919instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:28:13.027CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Degradation and detoxification of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) by an indigenous Delftia sp. strain in batch and continuous systems |
title |
Degradation and detoxification of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) by an indigenous Delftia sp. strain in batch and continuous systems |
spellingShingle |
Degradation and detoxification of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) by an indigenous Delftia sp. strain in batch and continuous systems González, Ana Julieta 2,4-D Delftia sp. Biodegradation Detoxification Continuous reactor |
title_short |
Degradation and detoxification of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) by an indigenous Delftia sp. strain in batch and continuous systems |
title_full |
Degradation and detoxification of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) by an indigenous Delftia sp. strain in batch and continuous systems |
title_fullStr |
Degradation and detoxification of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) by an indigenous Delftia sp. strain in batch and continuous systems |
title_full_unstemmed |
Degradation and detoxification of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) by an indigenous Delftia sp. strain in batch and continuous systems |
title_sort |
Degradation and detoxification of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) by an indigenous Delftia sp. strain in batch and continuous systems |
dc.creator.none.fl_str_mv |
González, Ana Julieta Gallego, Alfredo Gemini, V. L. Papalia, Mariana Andrea Radice, Marcela Alejandra Gutkind, Gabriel Osvaldo Planes, Estela Korol, Sonia Edith |
author |
González, Ana Julieta |
author_facet |
González, Ana Julieta Gallego, Alfredo Gemini, V. L. Papalia, Mariana Andrea Radice, Marcela Alejandra Gutkind, Gabriel Osvaldo Planes, Estela Korol, Sonia Edith |
author_role |
author |
author2 |
Gallego, Alfredo Gemini, V. L. Papalia, Mariana Andrea Radice, Marcela Alejandra Gutkind, Gabriel Osvaldo Planes, Estela Korol, Sonia Edith |
author2_role |
author author author author author author author |
dc.subject.none.fl_str_mv |
2,4-D Delftia sp. Biodegradation Detoxification Continuous reactor |
topic |
2,4-D Delftia sp. Biodegradation Detoxification Continuous reactor |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/2.8 https://purl.org/becyt/ford/2 |
dc.description.none.fl_txt_mv |
An indigenous bacterial strain capable of utilizing 2,4-dichlorophenoxyacetic acid (2,4-D) as the sole carbon and energy source was isolated from a polluted river in Buenos Aires, Argentina. The strain was identified as Delftia sp. by the 16S rRNA gene sequencing. Aerobic biodegradation assays in batch process were performed using a 2 L volume microfermentor at 28 C with agitation (200 rpm). The continuousflow system employed consists in a down-flow fixed-bed reactor, using polyurethane foam cubes as a support for immobilizing bacterial cells. Degradation of 2,4-D was evaluated by UV spectrophotometry, chemical oxygen demand (COD) and gas chromatography (GC). In the batch reactor microbial growth was measured by the plate count method. Biofilm development on polyurethane foam was observed by scanning electronic microscopy. Detoxification was assessed by using seeds toxicity tests. Under batch conditions Delftia sp. was able to degrade 100 and 200 mg L1 of 2,4-D in 24 and 28 h respectively. Compound and COD removals were 99.9% and 91.3% respectively at an initial 2,4-D concentration of 100 mg L1, and 99.0% and 89.4% when 2,4-D concentration was increased to 200 mg L1. When assays were performed in the continuous-flow reactor under operating conditions 2,4-D and COD removals of 99.6% and 90.8% were achieved, respectively. Toxicity was neither detected at the end of the batch process nor in the continuous-flow reactor effluent. Fil: González, Ana Julieta. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Sanidad, Nutrición, Bromatología y Toxicología. Cátedra de Higiene y Sanidad; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Gallego, Alfredo. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Sanidad, Nutrición, Bromatología y Toxicología. Cátedra de Higiene y Sanidad; Argentina Fil: Gemini, V. L.. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Sanidad, Nutrición, Bromatología y Toxicología. Cátedra de Higiene y Sanidad; Argentina Fil: Papalia, Mariana Andrea. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Microbiología, Inmunología y Biotecnología. Cátedra de Microbiología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Radice, Marcela Alejandra. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Microbiología, Inmunología y Biotecnología. Cátedra de Microbiología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Gutkind, Gabriel Osvaldo. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Microbiología, Inmunología y Biotecnología. Cátedra de Microbiología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Planes, Estela. Instituto Nacional de Tecnología Industrial; Argentina Fil: Korol, Sonia Edith. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Sanidad, Nutrición, Bromatología y Toxicología. Cátedra de Higiene y Sanidad; Argentina |
description |
An indigenous bacterial strain capable of utilizing 2,4-dichlorophenoxyacetic acid (2,4-D) as the sole carbon and energy source was isolated from a polluted river in Buenos Aires, Argentina. The strain was identified as Delftia sp. by the 16S rRNA gene sequencing. Aerobic biodegradation assays in batch process were performed using a 2 L volume microfermentor at 28 C with agitation (200 rpm). The continuousflow system employed consists in a down-flow fixed-bed reactor, using polyurethane foam cubes as a support for immobilizing bacterial cells. Degradation of 2,4-D was evaluated by UV spectrophotometry, chemical oxygen demand (COD) and gas chromatography (GC). In the batch reactor microbial growth was measured by the plate count method. Biofilm development on polyurethane foam was observed by scanning electronic microscopy. Detoxification was assessed by using seeds toxicity tests. Under batch conditions Delftia sp. was able to degrade 100 and 200 mg L1 of 2,4-D in 24 and 28 h respectively. Compound and COD removals were 99.9% and 91.3% respectively at an initial 2,4-D concentration of 100 mg L1, and 99.0% and 89.4% when 2,4-D concentration was increased to 200 mg L1. When assays were performed in the continuous-flow reactor under operating conditions 2,4-D and COD removals of 99.6% and 90.8% were achieved, respectively. Toxicity was neither detected at the end of the batch process nor in the continuous-flow reactor effluent. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-01 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/268919 González, Ana Julieta; Gallego, Alfredo; Gemini, V. L.; Papalia, Mariana Andrea; Radice, Marcela Alejandra; et al.; Degradation and detoxification of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) by an indigenous Delftia sp. strain in batch and continuous systems; Elsevier; International Biodeterioration and Biodegradation; 66; 1; 1-2012; 8-13 0964-8305 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/268919 |
identifier_str_mv |
González, Ana Julieta; Gallego, Alfredo; Gemini, V. L.; Papalia, Mariana Andrea; Radice, Marcela Alejandra; et al.; Degradation and detoxification of the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D) by an indigenous Delftia sp. strain in batch and continuous systems; Elsevier; International Biodeterioration and Biodegradation; 66; 1; 1-2012; 8-13 0964-8305 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S096483051100206X info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ibiod.2011.09.010 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844614285654753280 |
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13.070432 |