Description of Transport Mechanism During the Elimination of Copper (II) from Wastewaters Using Supported Liquid Membranes and ACORGA M5640 as Carrier

The kinetics of copper facilitated transport through a flat-sheet supported liquid membrane is investigated, using the commercially available oxime Acorga M5640 as ionophore, as a function of hydrodynamic conditions, stripping phase composition, concentration of copper(II), and pH of the source phas...

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Detalles Bibliográficos
Autores: Alguacil, Francisco José, Alonso Gámez, Manuel
Tipo de recurso: artículo
Fecha de publicación:2005
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/36451
Acceso en línea:http://hdl.handle.net/10261/36451
Access Level:acceso abierto
Palabra clave:Transport Mechanism
Elimination of Copper(II)
Wastewaters
Acorga M5640
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spelling Description of Transport Mechanism During the Elimination of Copper (II) from Wastewaters Using Supported Liquid Membranes and ACORGA M5640 as CarrierAlguacil, Francisco JoséAlonso Gámez, ManuelTransport MechanismElimination of Copper(II)WastewatersAcorga M5640The kinetics of copper facilitated transport through a flat-sheet supported liquid membrane is investigated, using the commercially available oxime Acorga M5640 as ionophore, as a function of hydrodynamic conditions, stripping phase composition, concentration of copper(II), and pH of the source phase and carrier concentration in the membrane phase. The performance of the system is also compared using organic diluents of different nature (aliphatic or aromatic) and against other available oxime extractants (LIX 860, LIX 622, LIX 973N and LIX 84-I). A model is presented that describes the transport mechanism, consisting of diffusion through source side aqueous diffusion layer, a fast interfacial chemical reaction, and diffusion carrier and its metal complex through the organic membrane. The organic membrane diffusional resistance (¢org) and aqueous diffusional resistances (¢aq) were calculated from the proposed model, and their values were 9.3 10-7 and 46565 s/cm, respectively. It was observed that the copper flux across the membrane tends to reach a plateau at high concentration of copper or low concentration of H+ owing to carrier saturation within the membrane and leads to a diffusion-controlled process. The values of the apparent diffusion coefficient (Dorg a) and limiting metal flux (Jlim) were calculated from the limiting conditions and found to be 5.2 10-11 and 1.9 10-9 mmol/cm2 s, respectively. The values of the bulk diffusion coefficient (Db,org) and diffusion coefficient (Dorg) calculated from the model were 4.8 10-10 and 1.3 10-10 cm2/s, respectively. The method had proven its feasibility to recover copper(II) from wastewaters.Wethank Mr. BasconesandMr. Lo´pez for technical assistance throughout the work. We also thank the CSIC (Spain) for support.Peer reviewedAmerican Chemical Society201120112005info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/36451reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1021/es0400180info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/364512026-05-22T06:33:51Z
dc.title.none.fl_str_mv Description of Transport Mechanism During the Elimination of Copper (II) from Wastewaters Using Supported Liquid Membranes and ACORGA M5640 as Carrier
title Description of Transport Mechanism During the Elimination of Copper (II) from Wastewaters Using Supported Liquid Membranes and ACORGA M5640 as Carrier
spellingShingle Description of Transport Mechanism During the Elimination of Copper (II) from Wastewaters Using Supported Liquid Membranes and ACORGA M5640 as Carrier
Alguacil, Francisco José
Transport Mechanism
Elimination of Copper(II)
Wastewaters
Acorga M5640
title_short Description of Transport Mechanism During the Elimination of Copper (II) from Wastewaters Using Supported Liquid Membranes and ACORGA M5640 as Carrier
title_full Description of Transport Mechanism During the Elimination of Copper (II) from Wastewaters Using Supported Liquid Membranes and ACORGA M5640 as Carrier
title_fullStr Description of Transport Mechanism During the Elimination of Copper (II) from Wastewaters Using Supported Liquid Membranes and ACORGA M5640 as Carrier
title_full_unstemmed Description of Transport Mechanism During the Elimination of Copper (II) from Wastewaters Using Supported Liquid Membranes and ACORGA M5640 as Carrier
title_sort Description of Transport Mechanism During the Elimination of Copper (II) from Wastewaters Using Supported Liquid Membranes and ACORGA M5640 as Carrier
dc.creator.none.fl_str_mv Alguacil, Francisco José
Alonso Gámez, Manuel
author Alguacil, Francisco José
author_facet Alguacil, Francisco José
Alonso Gámez, Manuel
author_role author
author2 Alonso Gámez, Manuel
author2_role author
dc.subject.none.fl_str_mv Transport Mechanism
Elimination of Copper(II)
Wastewaters
Acorga M5640
topic Transport Mechanism
Elimination of Copper(II)
Wastewaters
Acorga M5640
description The kinetics of copper facilitated transport through a flat-sheet supported liquid membrane is investigated, using the commercially available oxime Acorga M5640 as ionophore, as a function of hydrodynamic conditions, stripping phase composition, concentration of copper(II), and pH of the source phase and carrier concentration in the membrane phase. The performance of the system is also compared using organic diluents of different nature (aliphatic or aromatic) and against other available oxime extractants (LIX 860, LIX 622, LIX 973N and LIX 84-I). A model is presented that describes the transport mechanism, consisting of diffusion through source side aqueous diffusion layer, a fast interfacial chemical reaction, and diffusion carrier and its metal complex through the organic membrane. The organic membrane diffusional resistance (¢org) and aqueous diffusional resistances (¢aq) were calculated from the proposed model, and their values were 9.3 10-7 and 46565 s/cm, respectively. It was observed that the copper flux across the membrane tends to reach a plateau at high concentration of copper or low concentration of H+ owing to carrier saturation within the membrane and leads to a diffusion-controlled process. The values of the apparent diffusion coefficient (Dorg a) and limiting metal flux (Jlim) were calculated from the limiting conditions and found to be 5.2 10-11 and 1.9 10-9 mmol/cm2 s, respectively. The values of the bulk diffusion coefficient (Db,org) and diffusion coefficient (Dorg) calculated from the model were 4.8 10-10 and 1.3 10-10 cm2/s, respectively. The method had proven its feasibility to recover copper(II) from wastewaters.
publishDate 2005
dc.date.none.fl_str_mv 2005
2011
2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/36451
url http://hdl.handle.net/10261/36451
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1021/es0400180
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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