Evaluation of low-cost geo-adsorbents for As(V) removal

Four low-cost iron-bearing geo-adsorbents were tested for As(V) removal without pretreatment: Montanit300® (M), diatomite (D), pumice (P) and black sand (BS). The solids were carefully characterized by different analytical techniques (SEM-EDX, TPD-pyridine, N2 Physisorption, XRD and point of zero ch...

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Autores: Inchaurrondo, Natalia Soledad, Di Luca, Carla, Haure, Patricia Monica, Zerjav, Gregor, Pintar, Albin, Palet, Cristina
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:Argentina
Institución:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/126263
Acceso en línea:http://hdl.handle.net/11336/126263
Access Level:acceso abierto
Palabra clave:Geo-adsorbents
As(V) removal
Adsorption mechanism
Fe-bearing minerals
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
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network_acronym_str AR
network_name_str Argentina
repository_id_str
dc.title.none.fl_str_mv Evaluation of low-cost geo-adsorbents for As(V) removal
title Evaluation of low-cost geo-adsorbents for As(V) removal
spellingShingle Evaluation of low-cost geo-adsorbents for As(V) removal
Inchaurrondo, Natalia Soledad
Geo-adsorbents
As(V) removal
Adsorption mechanism
Fe-bearing minerals
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
title_short Evaluation of low-cost geo-adsorbents for As(V) removal
title_full Evaluation of low-cost geo-adsorbents for As(V) removal
title_fullStr Evaluation of low-cost geo-adsorbents for As(V) removal
title_full_unstemmed Evaluation of low-cost geo-adsorbents for As(V) removal
title_sort Evaluation of low-cost geo-adsorbents for As(V) removal
dc.creator.none.fl_str_mv Inchaurrondo, Natalia Soledad
Di Luca, Carla
Haure, Patricia Monica
Zerjav, Gregor
Pintar, Albin
Palet, Cristina
author Inchaurrondo, Natalia Soledad
author_facet Inchaurrondo, Natalia Soledad
Di Luca, Carla
Haure, Patricia Monica
Zerjav, Gregor
Pintar, Albin
Palet, Cristina
author_role author
author2 Di Luca, Carla
Haure, Patricia Monica
Zerjav, Gregor
Pintar, Albin
Palet, Cristina
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Geo-adsorbents
As(V) removal
Adsorption mechanism
Fe-bearing minerals
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
topic Geo-adsorbents
As(V) removal
Adsorption mechanism
Fe-bearing minerals
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
description Four low-cost iron-bearing geo-adsorbents were tested for As(V) removal without pretreatment: Montanit300® (M), diatomite (D), pumice (P) and black sand (BS). The solids were carefully characterized by different analytical techniques (SEM-EDX, TPD-pyridine, N2 Physisorption, XRD and point of zero charge). The adsorption of As(V) was evaluated through isotherms and kinetic studies (bottled water matrix, pH0=8,25 g/L of solids), and experiments addressing pH effect (pH0=3.6,7.5,11) and the presence of interfering anions (Cl−, SO42−, NO3−, PO43−). Experimental results were fitted to the Freundlich and Langmuir sorption isotherms. Under the employed conditions, P showed negligible adsorption, M and D presented adsorption capacities around 0.02 mg/g and, in spite its lower surface area, BS displayed the highest value (0.045 mg/g), which relates to a higher density of Fe species, M and D samples were easily regenerated (80%–100% desorption) through a basic treatment (0.01 M NaOH) and presented fast adsorption kinetics (1 h for D and seconds for M). BS showed a slow adsorption kinetic (24 h) and poor regeneration (only 50% desorption). Sample M (natural zeolite) resulted a promising option due to its remarkably fast adsorption kinetic, easy regeneration and adsorption capacity suitable for systems with relatively low As concentrations.
publishDate 2021
dc.date.none.fl_str_mv 2021-02
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/11336/126263
Inchaurrondo, Natalia Soledad; Di Luca, Carla; Haure, Patricia Monica; Zerjav, Gregor; Pintar, Albin; et al.; Evaluation of low-cost geo-adsorbents for As(V) removal; Elsevier Inc; Environmental Technology and Innovation; 21; 2-2021; 101341
2352-1864
CONICET Digital
CONICET
url http://hdl.handle.net/11336/126263
identifier_str_mv Inchaurrondo, Natalia Soledad; Di Luca, Carla; Haure, Patricia Monica; Zerjav, Gregor; Pintar, Albin; et al.; Evaluation of low-cost geo-adsorbents for As(V) removal; Elsevier Inc; Environmental Technology and Innovation; 21; 2-2021; 101341
2352-1864
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://linkinghub.elsevier.com/retrieve/pii/S2352186420316412
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.eti.2020.101341
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Inc
publisher.none.fl_str_mv Elsevier Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
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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spelling Evaluation of low-cost geo-adsorbents for As(V) removalInchaurrondo, Natalia SoledadDi Luca, CarlaHaure, Patricia MonicaZerjav, GregorPintar, AlbinPalet, CristinaGeo-adsorbentsAs(V) removalAdsorption mechanismFe-bearing mineralshttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2Four low-cost iron-bearing geo-adsorbents were tested for As(V) removal without pretreatment: Montanit300® (M), diatomite (D), pumice (P) and black sand (BS). The solids were carefully characterized by different analytical techniques (SEM-EDX, TPD-pyridine, N2 Physisorption, XRD and point of zero charge). The adsorption of As(V) was evaluated through isotherms and kinetic studies (bottled water matrix, pH0=8,25 g/L of solids), and experiments addressing pH effect (pH0=3.6,7.5,11) and the presence of interfering anions (Cl−, SO42−, NO3−, PO43−). Experimental results were fitted to the Freundlich and Langmuir sorption isotherms. Under the employed conditions, P showed negligible adsorption, M and D presented adsorption capacities around 0.02 mg/g and, in spite its lower surface area, BS displayed the highest value (0.045 mg/g), which relates to a higher density of Fe species, M and D samples were easily regenerated (80%–100% desorption) through a basic treatment (0.01 M NaOH) and presented fast adsorption kinetics (1 h for D and seconds for M). BS showed a slow adsorption kinetic (24 h) and poor regeneration (only 50% desorption). Sample M (natural zeolite) resulted a promising option due to its remarkably fast adsorption kinetic, easy regeneration and adsorption capacity suitable for systems with relatively low As concentrations.Fil: Inchaurrondo, Natalia Soledad. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Di Luca, Carla. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Haure, Patricia Monica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaFil: Zerjav, Gregor. Department For Environmental Sciences And Engineering; EsloveniaFil: Pintar, Albin. Department For Environmental Sciences And Engineering; EsloveniaFil: Palet, Cristina. Universidad Autónoma de Barcelona; EspañaElsevier Inc2021-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/126263Inchaurrondo, Natalia Soledad; Di Luca, Carla; Haure, Patricia Monica; Zerjav, Gregor; Pintar, Albin; et al.; Evaluation of low-cost geo-adsorbents for As(V) removal; Elsevier Inc; Environmental Technology and Innovation; 21; 2-2021; 1013412352-1864CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S2352186420316412info:eu-repo/semantics/altIdentifier/doi/10.1016/j.eti.2020.101341info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:41:50Zoai:ri.conicet.gov.ar:11336/126263instacron: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:34982024-05-08 13:41:50.564CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
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