The adsorption of Cd(II) and Pb(II) to chitin in seawater

The adsorption of Cd2+ and Pb2+ to the surface of chitin has been studied in seawater as a function of pH (2 to 8), temperature (5 to 60°C), salinity (4 to 36), and the presence of other transition metals. The rates of adsorption were quite rapid () and were affected by the presence of other metals...

Descripción completa

Detalles Bibliográficos
Autores: Santana-Casiano, J. Magdalena, González-Dávila, Melchor, Millero, Frank J.
Tipo de recurso: artículo
Fecha de publicación:1990
País:España
Repositorio:accedaCRIS portal de investigación de la Universidad de las Palmas de Gran Canaria
OAI Identifier:oai:accedacris.ulpgc.es:10553/729
Acceso en línea:http://hdl.handle.net/10553/729
Access Level:acceso abierto
Palabra clave:251002 Oceanografía química
Metales traza (Bioquímica)
Quitina
id ES_51a2f34b3aca0f50f355f6d596e2be62
oai_identifier_str oai:accedacris.ulpgc.es:10553/729
network_acronym_str ES
network_name_str España
repository_id_str
spelling The adsorption of Cd(II) and Pb(II) to chitin in seawaterSantana-Casiano, J. MagdalenaGonzález-Dávila, MelchorMillero, Frank J.251002 Oceanografía químicaMetales traza (Bioquímica)QuitinaThe adsorption of Cd2+ and Pb2+ to the surface of chitin has been studied in seawater as a function of pH (2 to 8), temperature (5 to 60°C), salinity (4 to 36), and the presence of other transition metals. The rates of adsorption were quite rapid () and were affected by the presence of other metals such as Cu2+. For Pb2+, a Langmuir-type adsorption equilibrium was used to represent the experimental data. The Langmuir stability constant, KHs, was 1.9 × 10−10 mg mol−1 and the complexing capacity was 4.4 × 10−8 mol g−1. For Cd2+, a single linear adsorption with a slope of 515.1 ± 8.7 ml g−1 was found. A decrease in the temperature resulted in greater adsorption for both Cd2+ and Pb2+. For Pb2+, an increase in the salinity resulted in a decrease of the adsorption. For Cd2+, the reverse behavior was observed as a consequence of a direct competition between the chitin surface groups and the Cl− ions in solution.SCIEFacultad de Ciencias del MarDepartamento de QuímicaFacultad de Ciencias del MarQUIMAQuímicaFacultad de Ciencias del MarQUIMAQuímica2009201820181990info:eu-repo/semantics/articleArticlehttp://hdl.handle.net/10553/729Journal of Colloid and Interface Science [ISSN 0021-9797], v. 137 (1), p. 102-110reponame:accedaCRIS portal de investigación de la Universidad de las Palmas de Gran Canariainstname:InglésJournal of Colloid and Interface Scienceinfo:eu-repo/semantics/openAccessoai:accedacris.ulpgc.es:10553/7292025-08-04T10:01:22Z
dc.title.none.fl_str_mv The adsorption of Cd(II) and Pb(II) to chitin in seawater
title The adsorption of Cd(II) and Pb(II) to chitin in seawater
spellingShingle The adsorption of Cd(II) and Pb(II) to chitin in seawater
Santana-Casiano, J. Magdalena
251002 Oceanografía química
Metales traza (Bioquímica)
Quitina
title_short The adsorption of Cd(II) and Pb(II) to chitin in seawater
title_full The adsorption of Cd(II) and Pb(II) to chitin in seawater
title_fullStr The adsorption of Cd(II) and Pb(II) to chitin in seawater
title_full_unstemmed The adsorption of Cd(II) and Pb(II) to chitin in seawater
title_sort The adsorption of Cd(II) and Pb(II) to chitin in seawater
dc.creator.none.fl_str_mv Santana-Casiano, J. Magdalena
González-Dávila, Melchor
Millero, Frank J.
author Santana-Casiano, J. Magdalena
author_facet Santana-Casiano, J. Magdalena
González-Dávila, Melchor
Millero, Frank J.
author_role author
author2 González-Dávila, Melchor
Millero, Frank J.
author2_role author
author
dc.contributor.none.fl_str_mv Facultad de Ciencias del Mar
Departamento de Química
Facultad de Ciencias del Mar
QUIMA
Química
Facultad de Ciencias del Mar
QUIMA
Química
dc.subject.none.fl_str_mv 251002 Oceanografía química
Metales traza (Bioquímica)
Quitina
topic 251002 Oceanografía química
Metales traza (Bioquímica)
Quitina
description The adsorption of Cd2+ and Pb2+ to the surface of chitin has been studied in seawater as a function of pH (2 to 8), temperature (5 to 60°C), salinity (4 to 36), and the presence of other transition metals. The rates of adsorption were quite rapid () and were affected by the presence of other metals such as Cu2+. For Pb2+, a Langmuir-type adsorption equilibrium was used to represent the experimental data. The Langmuir stability constant, KHs, was 1.9 × 10−10 mg mol−1 and the complexing capacity was 4.4 × 10−8 mol g−1. For Cd2+, a single linear adsorption with a slope of 515.1 ± 8.7 ml g−1 was found. A decrease in the temperature resulted in greater adsorption for both Cd2+ and Pb2+. For Pb2+, an increase in the salinity resulted in a decrease of the adsorption. For Cd2+, the reverse behavior was observed as a consequence of a direct competition between the chitin surface groups and the Cl− ions in solution.
publishDate 1990
dc.date.none.fl_str_mv 1990
2009
2018
2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
Article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10553/729
url http://hdl.handle.net/10553/729
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Journal of Colloid and Interface Science
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Journal of Colloid and Interface Science [ISSN 0021-9797], v. 137 (1), p. 102-110
reponame:accedaCRIS portal de investigación de la Universidad de las Palmas de Gran Canaria
instname:
instname_str
reponame_str accedaCRIS portal de investigación de la Universidad de las Palmas de Gran Canaria
collection accedaCRIS portal de investigación de la Universidad de las Palmas de Gran Canaria
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869407978471292928
score 15.301629

Similares en LA Referencia