Processing of residual gold (III) solutions via ion exchange

The processing of gold (III)-hydrochloric acid solutions by the anionic ion exchange Lewatit MP-64_resin has been investigated. The influence of several variables such as the temperature, the hydrochloric acid and metal concentrations in the aqueous solution and the variation of the amount of resin...

Descripción completa

Detalles Bibliográficos
Autores: Alguacil, Francisco José, Adeva, Paloma, 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:10261/36368
Acceso en línea:http://hdl.handle.net/10261/36368
Access Level:acceso abierto
Palabra clave:Gold (III)
Lewatit MP-64
Hydrochloric acid
id ES_b2cef3dfe4b28507d34dcdc426f4a04b
oai_identifier_str oai:digital.csic.es:10261/36368
network_acronym_str ES
network_name_str España
repository_id_str
spelling Processing of residual gold (III) solutions via ion exchangeAlguacil, Francisco JoséAdeva, PalomaAlonso Gámez, ManuelGold (III)Lewatit MP-64Hydrochloric acidThe processing of gold (III)-hydrochloric acid solutions by the anionic ion exchange Lewatit MP-64_resin has been investigated. The influence of several variables such as the temperature, the hydrochloric acid and metal concentrations in the aqueous solution and the variation of the amount of resin added has been studied. Moreover, a kinetic study performed in the uptake of gold (III) by Lewatit MP-64_shows that either the film-diffusion and the particle-diffusion models fit the adsorption process on the resin. Results obtained from batch experiments were applied to a continuous system using a vertical column. The loaded resin could be eluted by an acidic thiourea solution at 20°C. Various systems were investigated to precipitate gold from eluants, only the use of sodium borohydride allowed to accomplish the recovery of the metal from the pregnant solutions. Gold was recovered as fine particles, which were characterised by means of optical and scanning electron microscopy.The authors thank Mr. Bascones and Mr. López for technical assistance. Also to the CSIC (Spain) for support.Peer reviewedSpringer Nature201120112005info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/36368reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1007/BF03215222info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/363682026-05-22T06:33:51Z
dc.title.none.fl_str_mv Processing of residual gold (III) solutions via ion exchange
title Processing of residual gold (III) solutions via ion exchange
spellingShingle Processing of residual gold (III) solutions via ion exchange
Alguacil, Francisco José
Gold (III)
Lewatit MP-64
Hydrochloric acid
title_short Processing of residual gold (III) solutions via ion exchange
title_full Processing of residual gold (III) solutions via ion exchange
title_fullStr Processing of residual gold (III) solutions via ion exchange
title_full_unstemmed Processing of residual gold (III) solutions via ion exchange
title_sort Processing of residual gold (III) solutions via ion exchange
dc.creator.none.fl_str_mv Alguacil, Francisco José
Adeva, Paloma
Alonso Gámez, Manuel
author Alguacil, Francisco José
author_facet Alguacil, Francisco José
Adeva, Paloma
Alonso Gámez, Manuel
author_role author
author2 Adeva, Paloma
Alonso Gámez, Manuel
author2_role author
author
dc.subject.none.fl_str_mv Gold (III)
Lewatit MP-64
Hydrochloric acid
topic Gold (III)
Lewatit MP-64
Hydrochloric acid
description The processing of gold (III)-hydrochloric acid solutions by the anionic ion exchange Lewatit MP-64_resin has been investigated. The influence of several variables such as the temperature, the hydrochloric acid and metal concentrations in the aqueous solution and the variation of the amount of resin added has been studied. Moreover, a kinetic study performed in the uptake of gold (III) by Lewatit MP-64_shows that either the film-diffusion and the particle-diffusion models fit the adsorption process on the resin. Results obtained from batch experiments were applied to a continuous system using a vertical column. The loaded resin could be eluted by an acidic thiourea solution at 20°C. Various systems were investigated to precipitate gold from eluants, only the use of sodium borohydride allowed to accomplish the recovery of the metal from the pregnant solutions. Gold was recovered as fine particles, which were characterised by means of optical and scanning electron microscopy.
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/10261/36368
url http://hdl.handle.net/10261/36368
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1007/BF03215222
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
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
_version_ 1869417085856120832
score 15.811543

Similares en LA Referencia