Nanofiltration separation of polyvalent and monovalent anions in desalination brines

This work, as part of a global membrane process for the recovery of alkali and acids from reverse osmosis (RO) desalination brines, focuses on the nanofiltration (NF) separation of polyvalent and monovalent anions, more specifically sulfate and chloride. This pretreatment stage plays a key role in t...

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Autores: Perez González, Antía, Ibáñez Mendizábal, Raquel|||0000-0002-0432-1827, Gómez Rodríguez, Pedro Manuel, Urtiaga Mendia, Ana María|||0000-0002-8189-9171, Ortiz Uribe, Inmaculada|||0000-0002-3257-4821, Irabien Gulías, Ángel|||0000-0002-2411-4163
Tipo de recurso: artículo
Fecha de publicación:2015
País:España
Institución:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/10370
Acceso en línea:http://hdl.handle.net/10902/10370
Access Level:acceso abierto
Palabra clave:Desalination brines
Nanofiltration
Streaming potential
Separation sulfate/chloride
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spelling Nanofiltration separation of polyvalent and monovalent anions in desalination brinesPerez González, AntíaIbáñez Mendizábal, Raquel|||0000-0002-0432-1827Gómez Rodríguez, Pedro ManuelUrtiaga Mendia, Ana María|||0000-0002-8189-9171Ortiz Uribe, Inmaculada|||0000-0002-3257-4821Irabien Gulías, Ángel|||0000-0002-2411-4163Desalination brinesNanofiltrationStreaming potentialSeparation sulfate/chlorideThis work, as part of a global membrane process for the recovery of alkali and acids from reverse osmosis (RO) desalination brines, focuses on the nanofiltration (NF) separation of polyvalent and monovalent anions, more specifically sulfate and chloride. This pretreatment stage plays a key role in the whole recovery process. Working with model brines simulating the concentration of RO concentrates, 0.2–1.2 M chloride concentration and 0.1 M sulfate concentration, the experimental performance and modeling of the NF separation is reported. The study has been carried out with the NF270 (Dow Filmtec) membrane. The effect of operating pressure (500–2000 kPa), ionic strength (0.4–1.3 M) and chloride initial concentration (0.2–1.2 M) on the membrane separation capacity has been investigated. Finally, the Donnan Steric Pore Model (DSPM) together with experimentally determined parameters, effective pore radius (rp), thickness of the membrane effective layer (d) and effective membrane charge density (Xd), was proved accurate enough to satisfactorily describe the experimental results. In this work we provide for the first time the analysis of partitioning effects and transport mechanism in the NF separation of sulfate and chloride anions in concentrations that simulate those found in RO desalination brines.This work has been financially supported by projects CTQ2008-0690, ENE2010-15585 and CTM2011-23912 (co-financed by ERDF Funds).The authors would like to acknowledge SADYT, S.A. for providing assistance for this work.ElsevierUniversidad de Cantabria20152015-01-01journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articlehttp://hdl.handle.net/10902/10370Journal of Membrane Science, 2015, 473, 16–27reponame:UCrea Repositorio Abierto de la Universidad de Cantabriainstname:Universidad de Cantabria (UC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:repositorio.unican.es:10902/103702026-06-02T12:39:31Z
dc.title.none.fl_str_mv Nanofiltration separation of polyvalent and monovalent anions in desalination brines
title Nanofiltration separation of polyvalent and monovalent anions in desalination brines
spellingShingle Nanofiltration separation of polyvalent and monovalent anions in desalination brines
Perez González, Antía
Desalination brines
Nanofiltration
Streaming potential
Separation sulfate/chloride
title_short Nanofiltration separation of polyvalent and monovalent anions in desalination brines
title_full Nanofiltration separation of polyvalent and monovalent anions in desalination brines
title_fullStr Nanofiltration separation of polyvalent and monovalent anions in desalination brines
title_full_unstemmed Nanofiltration separation of polyvalent and monovalent anions in desalination brines
title_sort Nanofiltration separation of polyvalent and monovalent anions in desalination brines
dc.creator.none.fl_str_mv Perez González, Antía
Ibáñez Mendizábal, Raquel|||0000-0002-0432-1827
Gómez Rodríguez, Pedro Manuel
Urtiaga Mendia, Ana María|||0000-0002-8189-9171
Ortiz Uribe, Inmaculada|||0000-0002-3257-4821
Irabien Gulías, Ángel|||0000-0002-2411-4163
author Perez González, Antía
author_facet Perez González, Antía
Ibáñez Mendizábal, Raquel|||0000-0002-0432-1827
Gómez Rodríguez, Pedro Manuel
Urtiaga Mendia, Ana María|||0000-0002-8189-9171
Ortiz Uribe, Inmaculada|||0000-0002-3257-4821
Irabien Gulías, Ángel|||0000-0002-2411-4163
author_role author
author2 Ibáñez Mendizábal, Raquel|||0000-0002-0432-1827
Gómez Rodríguez, Pedro Manuel
Urtiaga Mendia, Ana María|||0000-0002-8189-9171
Ortiz Uribe, Inmaculada|||0000-0002-3257-4821
Irabien Gulías, Ángel|||0000-0002-2411-4163
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad de Cantabria
dc.subject.none.fl_str_mv Desalination brines
Nanofiltration
Streaming potential
Separation sulfate/chloride
topic Desalination brines
Nanofiltration
Streaming potential
Separation sulfate/chloride
description This work, as part of a global membrane process for the recovery of alkali and acids from reverse osmosis (RO) desalination brines, focuses on the nanofiltration (NF) separation of polyvalent and monovalent anions, more specifically sulfate and chloride. This pretreatment stage plays a key role in the whole recovery process. Working with model brines simulating the concentration of RO concentrates, 0.2–1.2 M chloride concentration and 0.1 M sulfate concentration, the experimental performance and modeling of the NF separation is reported. The study has been carried out with the NF270 (Dow Filmtec) membrane. The effect of operating pressure (500–2000 kPa), ionic strength (0.4–1.3 M) and chloride initial concentration (0.2–1.2 M) on the membrane separation capacity has been investigated. Finally, the Donnan Steric Pore Model (DSPM) together with experimentally determined parameters, effective pore radius (rp), thickness of the membrane effective layer (d) and effective membrane charge density (Xd), was proved accurate enough to satisfactorily describe the experimental results. In this work we provide for the first time the analysis of partitioning effects and transport mechanism in the NF separation of sulfate and chloride anions in concentrations that simulate those found in RO desalination brines.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10902/10370
url http://hdl.handle.net/10902/10370
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv Journal of Membrane Science, 2015, 473, 16–27
reponame:UCrea Repositorio Abierto de la Universidad de Cantabria
instname:Universidad de Cantabria (UC)
instname_str Universidad de Cantabria (UC)
reponame_str UCrea Repositorio Abierto de la Universidad de Cantabria
collection UCrea Repositorio Abierto de la Universidad de Cantabria
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869422984319467520
score 15.300724

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