Removal of cadmium and lead from dilute aqueous solutions by Rhodotorula rubra

Autores
Salinas, Eloy; Elorza, Maria Eugenia; Rezza, Irma Gladis; Marchevsky, Eduardo Jorge; Martinez, Luis Dante; Sanz Ferramola, Maria Isabel
Año de publicación
2000
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Removal of cadmium (Cd) and lead (Pb) from dilute aqueous solution (5–40 mg/l) by the yeast Rhodotorula rubra was examined. The influence of pH and temperature of the solution and the state of the cells (viable and nonviable biomass) on heavy metal removal were studied. The uptake of Cd and Pb was significantly affected by the initial pH of the solution. At low pH the removal of Cd and Pb decreased while the removal of the metals increased with increasing pH. The optimum initial pH values were 4–4.5 and 5.5–6 for uptake of Pb and Cd, respectively. The effect of temperature was different on each metal. For Pb uptake the increase in temperature (25°C to 37°C) was adverse while Cd uptake increased with temperature. A Langmuir sorption model was used to evaluate the sorption behaviour of the yeast and Langmuir parameters were obtained. Metal uptakes at equilibrium residual concentrations of 10 mg/l (q10) were also calculated for comparison with other biosorbents. The q10 value for Cd or Pb uptake by R. rubra biomass was higher than the q10 value reported for Saccharomyces cereviseae or fungal biomass. Desorption was carried out with either 0.1 M EDTA or 0.1 M HCl. The maximum amount of Cd was desorbed in 10 ml 0.1 M EDTA, while desorption efficiency of 0.1 M HCl was lower. In Pb desorption tests there was no difference between the two elutants.
Fil: Salinas, Eloy. Universidad Nacional de San Luis; Argentina
Fil: Elorza, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Investigaciones Económicas y Sociales del Sur. Universidad Nacional del Sur. Departamento de Economía. Instituto de Investigaciones Económicas y Sociales del Sur; Argentina. Universidad Nacional de San Luis; Argentina
Fil: Rezza, Irma Gladis. Universidad Nacional de San Luis; Argentina
Fil: Marchevsky, Eduardo Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina
Fil: Martinez, Luis Dante. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina
Fil: Sanz Ferramola, Maria Isabel. Universidad Nacional de San Luis; Argentina
Materia
CADMIUM
LEAD
YEASTS
RHODOTORULA RUBRA
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/101171
Acceder
id CONICETDig_f20051e58a2b5e056acb430c7ede2056
oai_identifier_str oai:ri.conicet.gov.ar:11336/101171
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Removal of cadmium and lead from dilute aqueous solutions by Rhodotorula rubraSalinas, EloyElorza, Maria EugeniaRezza, Irma GladisMarchevsky, Eduardo JorgeMartinez, Luis DanteSanz Ferramola, Maria IsabelCADMIUMLEADYEASTSRHODOTORULA RUBRAhttps://purl.org/becyt/ford/2.8https://purl.org/becyt/ford/2Removal of cadmium (Cd) and lead (Pb) from dilute aqueous solution (5–40 mg/l) by the yeast Rhodotorula rubra was examined. The influence of pH and temperature of the solution and the state of the cells (viable and nonviable biomass) on heavy metal removal were studied. The uptake of Cd and Pb was significantly affected by the initial pH of the solution. At low pH the removal of Cd and Pb decreased while the removal of the metals increased with increasing pH. The optimum initial pH values were 4–4.5 and 5.5–6 for uptake of Pb and Cd, respectively. The effect of temperature was different on each metal. For Pb uptake the increase in temperature (25°C to 37°C) was adverse while Cd uptake increased with temperature. A Langmuir sorption model was used to evaluate the sorption behaviour of the yeast and Langmuir parameters were obtained. Metal uptakes at equilibrium residual concentrations of 10 mg/l (q10) were also calculated for comparison with other biosorbents. The q10 value for Cd or Pb uptake by R. rubra biomass was higher than the q10 value reported for Saccharomyces cereviseae or fungal biomass. Desorption was carried out with either 0.1 M EDTA or 0.1 M HCl. The maximum amount of Cd was desorbed in 10 ml 0.1 M EDTA, while desorption efficiency of 0.1 M HCl was lower. In Pb desorption tests there was no difference between the two elutants.Fil: Salinas, Eloy. Universidad Nacional de San Luis; ArgentinaFil: Elorza, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Investigaciones Económicas y Sociales del Sur. Universidad Nacional del Sur. Departamento de Economía. Instituto de Investigaciones Económicas y Sociales del Sur; Argentina. Universidad Nacional de San Luis; ArgentinaFil: Rezza, Irma Gladis. Universidad Nacional de San Luis; ArgentinaFil: Marchevsky, Eduardo Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; ArgentinaFil: Martinez, Luis Dante. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; ArgentinaFil: Sanz Ferramola, Maria Isabel. Universidad Nacional de San Luis; ArgentinaElsevier2000-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/vnd.openxmlformats-officedocument.wordprocessingml.documentapplication/pdfhttp://hdl.handle.net/11336/101171Salinas, Eloy; Elorza, Maria Eugenia; Rezza, Irma Gladis; Marchevsky, Eduardo Jorge; Martinez, Luis Dante; et al.; Removal of cadmium and lead from dilute aqueous solutions by Rhodotorula rubra; Elsevier; Bioresource Technology; 72; 2; 4-2000; 107-1120960-8524CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S096085249900111Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/S0960-8524(99)00111-Xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:07:56Zoai:ri.conicet.gov.ar:11336/101171instacron: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:34982025-09-10 13:07:56.408CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Removal of cadmium and lead from dilute aqueous solutions by Rhodotorula rubra
title Removal of cadmium and lead from dilute aqueous solutions by Rhodotorula rubra
spellingShingle Removal of cadmium and lead from dilute aqueous solutions by Rhodotorula rubra
Salinas, Eloy
CADMIUM
LEAD
YEASTS
RHODOTORULA RUBRA
title_short Removal of cadmium and lead from dilute aqueous solutions by Rhodotorula rubra
title_full Removal of cadmium and lead from dilute aqueous solutions by Rhodotorula rubra
title_fullStr Removal of cadmium and lead from dilute aqueous solutions by Rhodotorula rubra
title_full_unstemmed Removal of cadmium and lead from dilute aqueous solutions by Rhodotorula rubra
title_sort Removal of cadmium and lead from dilute aqueous solutions by Rhodotorula rubra
dc.creator.none.fl_str_mv Salinas, Eloy
Elorza, Maria Eugenia
Rezza, Irma Gladis
Marchevsky, Eduardo Jorge
Martinez, Luis Dante
Sanz Ferramola, Maria Isabel
author Salinas, Eloy
author_facet Salinas, Eloy
Elorza, Maria Eugenia
Rezza, Irma Gladis
Marchevsky, Eduardo Jorge
Martinez, Luis Dante
Sanz Ferramola, Maria Isabel
author_role author
author2 Elorza, Maria Eugenia
Rezza, Irma Gladis
Marchevsky, Eduardo Jorge
Martinez, Luis Dante
Sanz Ferramola, Maria Isabel
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv CADMIUM
LEAD
YEASTS
RHODOTORULA RUBRA
topic CADMIUM
LEAD
YEASTS
RHODOTORULA RUBRA
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.8
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Removal of cadmium (Cd) and lead (Pb) from dilute aqueous solution (5–40 mg/l) by the yeast Rhodotorula rubra was examined. The influence of pH and temperature of the solution and the state of the cells (viable and nonviable biomass) on heavy metal removal were studied. The uptake of Cd and Pb was significantly affected by the initial pH of the solution. At low pH the removal of Cd and Pb decreased while the removal of the metals increased with increasing pH. The optimum initial pH values were 4–4.5 and 5.5–6 for uptake of Pb and Cd, respectively. The effect of temperature was different on each metal. For Pb uptake the increase in temperature (25°C to 37°C) was adverse while Cd uptake increased with temperature. A Langmuir sorption model was used to evaluate the sorption behaviour of the yeast and Langmuir parameters were obtained. Metal uptakes at equilibrium residual concentrations of 10 mg/l (q10) were also calculated for comparison with other biosorbents. The q10 value for Cd or Pb uptake by R. rubra biomass was higher than the q10 value reported for Saccharomyces cereviseae or fungal biomass. Desorption was carried out with either 0.1 M EDTA or 0.1 M HCl. The maximum amount of Cd was desorbed in 10 ml 0.1 M EDTA, while desorption efficiency of 0.1 M HCl was lower. In Pb desorption tests there was no difference between the two elutants.
Fil: Salinas, Eloy. Universidad Nacional de San Luis; Argentina
Fil: Elorza, Maria Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Investigaciones Económicas y Sociales del Sur. Universidad Nacional del Sur. Departamento de Economía. Instituto de Investigaciones Económicas y Sociales del Sur; Argentina. Universidad Nacional de San Luis; Argentina
Fil: Rezza, Irma Gladis. Universidad Nacional de San Luis; Argentina
Fil: Marchevsky, Eduardo Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina
Fil: Martinez, Luis Dante. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina
Fil: Sanz Ferramola, Maria Isabel. Universidad Nacional de San Luis; Argentina
description Removal of cadmium (Cd) and lead (Pb) from dilute aqueous solution (5–40 mg/l) by the yeast Rhodotorula rubra was examined. The influence of pH and temperature of the solution and the state of the cells (viable and nonviable biomass) on heavy metal removal were studied. The uptake of Cd and Pb was significantly affected by the initial pH of the solution. At low pH the removal of Cd and Pb decreased while the removal of the metals increased with increasing pH. The optimum initial pH values were 4–4.5 and 5.5–6 for uptake of Pb and Cd, respectively. The effect of temperature was different on each metal. For Pb uptake the increase in temperature (25°C to 37°C) was adverse while Cd uptake increased with temperature. A Langmuir sorption model was used to evaluate the sorption behaviour of the yeast and Langmuir parameters were obtained. Metal uptakes at equilibrium residual concentrations of 10 mg/l (q10) were also calculated for comparison with other biosorbents. The q10 value for Cd or Pb uptake by R. rubra biomass was higher than the q10 value reported for Saccharomyces cereviseae or fungal biomass. Desorption was carried out with either 0.1 M EDTA or 0.1 M HCl. The maximum amount of Cd was desorbed in 10 ml 0.1 M EDTA, while desorption efficiency of 0.1 M HCl was lower. In Pb desorption tests there was no difference between the two elutants.
publishDate 2000
dc.date.none.fl_str_mv 2000-04
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/11336/101171
Salinas, Eloy; Elorza, Maria Eugenia; Rezza, Irma Gladis; Marchevsky, Eduardo Jorge; Martinez, Luis Dante; et al.; Removal of cadmium and lead from dilute aqueous solutions by Rhodotorula rubra; Elsevier; Bioresource Technology; 72; 2; 4-2000; 107-112
0960-8524
CONICET Digital
CONICET
url http://hdl.handle.net/11336/101171
identifier_str_mv Salinas, Eloy; Elorza, Maria Eugenia; Rezza, Irma Gladis; Marchevsky, Eduardo Jorge; Martinez, Luis Dante; et al.; Removal of cadmium and lead from dilute aqueous solutions by Rhodotorula rubra; Elsevier; Bioresource Technology; 72; 2; 4-2000; 107-112
0960-8524
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/S096085249900111X
info:eu-repo/semantics/altIdentifier/doi/10.1016/S0960-8524(99)00111-X
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/vnd.openxmlformats-officedocument.wordprocessingml.document
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
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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score 12.993085

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