Effect of solution pH on the dynamic of biosorption of Cr(VI) by living plants of Salvinia minima

Autores
Chocobar Ponce, Silvana; Prado, Carolina del Valle; Pagano, Eduardo Antonio; Prado, Fernando Eduardo; Rosa, Mariana Daniela
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Salvinia minima is a widely distributed floating fern that bioaccumulates high concentrations of heavy metals and is a promising species for Cr(VI) removal from polluted waters. Metal bioaccumulation efficiency of aquatic plants can be affected by different factors such as surrounding pH and metal concentration. In this study we investigated the effect of solution pH on the biosorption and reduction of Cr(VI) in living plants of S. minima under both pH-stat (buffered) and pH-shift (unbuffered) conditions. Plants were exposed to 0, 5 and 20 mg L−1 Cr(VI) concentrations for 7 days under controlled conditions at pH 4.0, 6.0 and 7.6. Cr(VI) was determined using 1,5-diphenylcarbazide in presence and absence of KMnO4. Cr(III) concentration was estimated as the difference between Crtotal [Cr(VI) + Cr(III)] (with KMnO4) and Cr(VI) (without KMnO4) concentrations. Metal biosorption was significantly higher in acid buffered solution than in unbuffered solution, but the biosorption pattern was different indicating that solution pH could be a key factor controlling the removal of Cr(VI) by S. minima. The pH of acid unbuffered Cr(VI)-containing solutions was significantly increased during Salvinia growth. Contrarily no significant changes of pH were observed in unbuffered solutions without Cr(VI). Reduction of Cr(VI) to Cr(III) was significantly higher at lower pH. Visual symptoms of Cr(VI)-induced damage were less evident at lower pH. Results demonstrated that S. minima can survive and remove Cr(VI) at low pH values. This work indicates that selection of suitable aquatic macrophytes for potential application in heavy metal phytoremediation requires an additional focus regarding interactions among metal, solution pH, and plant performance.
Fil: Chocobar Ponce, Silvana. Universidad Nacional de Tucuman. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Catedra de Fisiologia Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Prado, Carolina del Valle. Universidad Nacional de Tucuman. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Catedra de Fisiologia Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Pagano, Eduardo Antonio. Universidad de Buenos Aires. Facultad de Agronomia. Departamento de Biologia Aplicada y Alimentos; Argentina
Fil: Prado, Fernando Eduardo. Universidad Nacional de Tucuman. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Catedra de Fisiologia Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Rosa, Mariana Daniela. Universidad Nacional de Tucuman. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Catedra de Fisiologia Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
BIOSORPTION
CR
DESORPTION
PH
SALVINIA MINIMA
VISUAL SYMPTOMS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/12587
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/12587
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Effect of solution pH on the dynamic of biosorption of Cr(VI) by living plants of Salvinia minimaChocobar Ponce, SilvanaPrado, Carolina del VallePagano, Eduardo AntonioPrado, Fernando EduardoRosa, Mariana DanielaBIOSORPTIONCRDESORPTIONPHSALVINIA MINIMAVISUAL SYMPTOMShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Salvinia minima is a widely distributed floating fern that bioaccumulates high concentrations of heavy metals and is a promising species for Cr(VI) removal from polluted waters. Metal bioaccumulation efficiency of aquatic plants can be affected by different factors such as surrounding pH and metal concentration. In this study we investigated the effect of solution pH on the biosorption and reduction of Cr(VI) in living plants of S. minima under both pH-stat (buffered) and pH-shift (unbuffered) conditions. Plants were exposed to 0, 5 and 20 mg L−1 Cr(VI) concentrations for 7 days under controlled conditions at pH 4.0, 6.0 and 7.6. Cr(VI) was determined using 1,5-diphenylcarbazide in presence and absence of KMnO4. Cr(III) concentration was estimated as the difference between Crtotal [Cr(VI) + Cr(III)] (with KMnO4) and Cr(VI) (without KMnO4) concentrations. Metal biosorption was significantly higher in acid buffered solution than in unbuffered solution, but the biosorption pattern was different indicating that solution pH could be a key factor controlling the removal of Cr(VI) by S. minima. The pH of acid unbuffered Cr(VI)-containing solutions was significantly increased during Salvinia growth. Contrarily no significant changes of pH were observed in unbuffered solutions without Cr(VI). Reduction of Cr(VI) to Cr(III) was significantly higher at lower pH. Visual symptoms of Cr(VI)-induced damage were less evident at lower pH. Results demonstrated that S. minima can survive and remove Cr(VI) at low pH values. This work indicates that selection of suitable aquatic macrophytes for potential application in heavy metal phytoremediation requires an additional focus regarding interactions among metal, solution pH, and plant performance.Fil: Chocobar Ponce, Silvana. Universidad Nacional de Tucuman. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Catedra de Fisiologia Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Prado, Carolina del Valle. Universidad Nacional de Tucuman. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Catedra de Fisiologia Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Pagano, Eduardo Antonio. Universidad de Buenos Aires. Facultad de Agronomia. Departamento de Biologia Aplicada y Alimentos; ArgentinaFil: Prado, Fernando Eduardo. Universidad Nacional de Tucuman. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Catedra de Fisiologia Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Rosa, Mariana Daniela. Universidad Nacional de Tucuman. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Catedra de Fisiologia Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaElsevier Science2015-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/12587Chocobar Ponce, Silvana; Prado, Carolina del Valle; Pagano, Eduardo Antonio; Prado, Fernando Eduardo; Rosa, Mariana Daniela; Effect of solution pH on the dynamic of biosorption of Cr(VI) by living plants of Salvinia minima; Elsevier Science; Ecological Engineering; 74; 1-2015; 33-410925-8574enginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.ecoleng.2014.09.117info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S092585741400528Xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:39:11Zoai:ri.conicet.gov.ar:11336/12587instacron: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 10:39:11.94CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effect of solution pH on the dynamic of biosorption of Cr(VI) by living plants of Salvinia minima
title Effect of solution pH on the dynamic of biosorption of Cr(VI) by living plants of Salvinia minima
spellingShingle Effect of solution pH on the dynamic of biosorption of Cr(VI) by living plants of Salvinia minima
Chocobar Ponce, Silvana
BIOSORPTION
CR
DESORPTION
PH
SALVINIA MINIMA
VISUAL SYMPTOMS
title_short Effect of solution pH on the dynamic of biosorption of Cr(VI) by living plants of Salvinia minima
title_full Effect of solution pH on the dynamic of biosorption of Cr(VI) by living plants of Salvinia minima
title_fullStr Effect of solution pH on the dynamic of biosorption of Cr(VI) by living plants of Salvinia minima
title_full_unstemmed Effect of solution pH on the dynamic of biosorption of Cr(VI) by living plants of Salvinia minima
title_sort Effect of solution pH on the dynamic of biosorption of Cr(VI) by living plants of Salvinia minima
dc.creator.none.fl_str_mv Chocobar Ponce, Silvana
Prado, Carolina del Valle
Pagano, Eduardo Antonio
Prado, Fernando Eduardo
Rosa, Mariana Daniela
author Chocobar Ponce, Silvana
author_facet Chocobar Ponce, Silvana
Prado, Carolina del Valle
Pagano, Eduardo Antonio
Prado, Fernando Eduardo
Rosa, Mariana Daniela
author_role author
author2 Prado, Carolina del Valle
Pagano, Eduardo Antonio
Prado, Fernando Eduardo
Rosa, Mariana Daniela
author2_role author
author
author
author
dc.subject.none.fl_str_mv BIOSORPTION
CR
DESORPTION
PH
SALVINIA MINIMA
VISUAL SYMPTOMS
topic BIOSORPTION
CR
DESORPTION
PH
SALVINIA MINIMA
VISUAL SYMPTOMS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Salvinia minima is a widely distributed floating fern that bioaccumulates high concentrations of heavy metals and is a promising species for Cr(VI) removal from polluted waters. Metal bioaccumulation efficiency of aquatic plants can be affected by different factors such as surrounding pH and metal concentration. In this study we investigated the effect of solution pH on the biosorption and reduction of Cr(VI) in living plants of S. minima under both pH-stat (buffered) and pH-shift (unbuffered) conditions. Plants were exposed to 0, 5 and 20 mg L−1 Cr(VI) concentrations for 7 days under controlled conditions at pH 4.0, 6.0 and 7.6. Cr(VI) was determined using 1,5-diphenylcarbazide in presence and absence of KMnO4. Cr(III) concentration was estimated as the difference between Crtotal [Cr(VI) + Cr(III)] (with KMnO4) and Cr(VI) (without KMnO4) concentrations. Metal biosorption was significantly higher in acid buffered solution than in unbuffered solution, but the biosorption pattern was different indicating that solution pH could be a key factor controlling the removal of Cr(VI) by S. minima. The pH of acid unbuffered Cr(VI)-containing solutions was significantly increased during Salvinia growth. Contrarily no significant changes of pH were observed in unbuffered solutions without Cr(VI). Reduction of Cr(VI) to Cr(III) was significantly higher at lower pH. Visual symptoms of Cr(VI)-induced damage were less evident at lower pH. Results demonstrated that S. minima can survive and remove Cr(VI) at low pH values. This work indicates that selection of suitable aquatic macrophytes for potential application in heavy metal phytoremediation requires an additional focus regarding interactions among metal, solution pH, and plant performance.
Fil: Chocobar Ponce, Silvana. Universidad Nacional de Tucuman. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Catedra de Fisiologia Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Prado, Carolina del Valle. Universidad Nacional de Tucuman. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Catedra de Fisiologia Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Pagano, Eduardo Antonio. Universidad de Buenos Aires. Facultad de Agronomia. Departamento de Biologia Aplicada y Alimentos; Argentina
Fil: Prado, Fernando Eduardo. Universidad Nacional de Tucuman. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Catedra de Fisiologia Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Rosa, Mariana Daniela. Universidad Nacional de Tucuman. Facultad de Ciencias Naturales e Instituto Miguel Lillo. Catedra de Fisiologia Vegetal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Salvinia minima is a widely distributed floating fern that bioaccumulates high concentrations of heavy metals and is a promising species for Cr(VI) removal from polluted waters. Metal bioaccumulation efficiency of aquatic plants can be affected by different factors such as surrounding pH and metal concentration. In this study we investigated the effect of solution pH on the biosorption and reduction of Cr(VI) in living plants of S. minima under both pH-stat (buffered) and pH-shift (unbuffered) conditions. Plants were exposed to 0, 5 and 20 mg L−1 Cr(VI) concentrations for 7 days under controlled conditions at pH 4.0, 6.0 and 7.6. Cr(VI) was determined using 1,5-diphenylcarbazide in presence and absence of KMnO4. Cr(III) concentration was estimated as the difference between Crtotal [Cr(VI) + Cr(III)] (with KMnO4) and Cr(VI) (without KMnO4) concentrations. Metal biosorption was significantly higher in acid buffered solution than in unbuffered solution, but the biosorption pattern was different indicating that solution pH could be a key factor controlling the removal of Cr(VI) by S. minima. The pH of acid unbuffered Cr(VI)-containing solutions was significantly increased during Salvinia growth. Contrarily no significant changes of pH were observed in unbuffered solutions without Cr(VI). Reduction of Cr(VI) to Cr(III) was significantly higher at lower pH. Visual symptoms of Cr(VI)-induced damage were less evident at lower pH. Results demonstrated that S. minima can survive and remove Cr(VI) at low pH values. This work indicates that selection of suitable aquatic macrophytes for potential application in heavy metal phytoremediation requires an additional focus regarding interactions among metal, solution pH, and plant performance.
publishDate 2015
dc.date.none.fl_str_mv 2015-01
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/11336/12587
Chocobar Ponce, Silvana; Prado, Carolina del Valle; Pagano, Eduardo Antonio; Prado, Fernando Eduardo; Rosa, Mariana Daniela; Effect of solution pH on the dynamic of biosorption of Cr(VI) by living plants of Salvinia minima; Elsevier Science; Ecological Engineering; 74; 1-2015; 33-41
0925-8574
url http://hdl.handle.net/11336/12587
identifier_str_mv Chocobar Ponce, Silvana; Prado, Carolina del Valle; Pagano, Eduardo Antonio; Prado, Fernando Eduardo; Rosa, Mariana Daniela; Effect of solution pH on the dynamic of biosorption of Cr(VI) by living plants of Salvinia minima; Elsevier Science; Ecological Engineering; 74; 1-2015; 33-41
0925-8574
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ecoleng.2014.09.117
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S092585741400528X
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv 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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