Iron nanoparticles based nanofluids for in situ environmental remediation

Autores
Crespi, Julieta; Binetti Basterrechea, Gian Franco; Finoli, Agostina Sol; Montesinos, Victor Nahuel; Quici, Natalia
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión aceptada
Descripción
The injection of nanoscale zerovalent iron particles (nZVI) suspensions in the ground is a technology employed for in situ water and soil remediation. Due to its nature, nZVI forming these nanofluids (NFs), tend to agglomerate, but this can be overcome by polyelectrolyte coatings, that also improve their mobility. In this work, stabilization of nZVI with carboxymethylcellulose (CMC) was studied. NFs prepared with CMC (CMC-NSTAR) were compared with non-stabilized NFs (b-NSTAR). First, the stabilization efficiency was evaluated by the analysis of the nanoparticles sedimentation rate. Then, the mobility of stabilized and non-stabilized NFs was studied in columns filled with porous media at laboratory and pilot scale. Finally, NFs reactivity for the removal of aqueous Cr(VI) was tested in batch and columns experiments. In the column experiments, a porous media bed was loaded with NSTAR and then a Cr(VI) solution was injected upwards. CMC-NSTAR showed good mobility at both scales being successfully eluted from the porous media. In the case of b-NSTAR, the accumulation of nanoparticles in the bottom of the column was observed and elution was not achieved. Using b-NSTAR as reactive barrier, a total removal of 15.5 mg Cr(VI)/g Fe was achieved. Better removal rates were found in batch experiments (22.8 mg Cr(VI)/g Fe). Reactivity experiments in batch with CMC-NSTAR showed 39.9 mg Cr(VI)/g Fe removal. In conclusion, the NF was proved to have good transport properties and Cr(VI) removal capacity.
Fil: Crespi, Julieta. Instituto Sabato (UNSAM-CNEA); CTQ (UTN FRBA); DQRA (CNEA)
Fil: Binetti Basterrechea, Gian Franco. CTQ (UTN FRBA); Argentina.
Fil: Finoli, Agostina Sol. CTQ (UTN FRBA); Argentina.
Fil: Montesinos, Victor Nahuel. DQRA (CONICET; CNEA); CTQ (UTN FRBA); Argentina.
Fil: Quici, Natalia. DQRA (CONICET; CNEA); CTQ (UTN FRBA); Argentina.
Peer Reviewed
Materia
in situ
zerovalent iron nanoparticles
Cr(VI)
stable nanofluids
Nivel de accesibilidad
acceso abierto
Condiciones de uso
2024-08-02T18:42:55Z
Repositorio
Repositorio Institucional Abierto (UTN)
Institución
Universidad Tecnológica Nacional
OAI Identificador
oai:ria.utn.edu.ar:20.500.12272/11222
Acceder
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oai_identifier_str oai:ria.utn.edu.ar:20.500.12272/11222
network_acronym_str RIAUTN
repository_id_str a
network_name_str Repositorio Institucional Abierto (UTN)
spelling Iron nanoparticles based nanofluids for in situ environmental remediationCrespi, JulietaBinetti Basterrechea, Gian FrancoFinoli, Agostina SolMontesinos, Victor NahuelQuici, Nataliain situzerovalent iron nanoparticlesCr(VI)stable nanofluidsThe injection of nanoscale zerovalent iron particles (nZVI) suspensions in the ground is a technology employed for in situ water and soil remediation. Due to its nature, nZVI forming these nanofluids (NFs), tend to agglomerate, but this can be overcome by polyelectrolyte coatings, that also improve their mobility. In this work, stabilization of nZVI with carboxymethylcellulose (CMC) was studied. NFs prepared with CMC (CMC-NSTAR) were compared with non-stabilized NFs (b-NSTAR). First, the stabilization efficiency was evaluated by the analysis of the nanoparticles sedimentation rate. Then, the mobility of stabilized and non-stabilized NFs was studied in columns filled with porous media at laboratory and pilot scale. Finally, NFs reactivity for the removal of aqueous Cr(VI) was tested in batch and columns experiments. In the column experiments, a porous media bed was loaded with NSTAR and then a Cr(VI) solution was injected upwards. CMC-NSTAR showed good mobility at both scales being successfully eluted from the porous media. In the case of b-NSTAR, the accumulation of nanoparticles in the bottom of the column was observed and elution was not achieved. Using b-NSTAR as reactive barrier, a total removal of 15.5 mg Cr(VI)/g Fe was achieved. Better removal rates were found in batch experiments (22.8 mg Cr(VI)/g Fe). Reactivity experiments in batch with CMC-NSTAR showed 39.9 mg Cr(VI)/g Fe removal. In conclusion, the NF was proved to have good transport properties and Cr(VI) removal capacity.Fil: Crespi, Julieta. Instituto Sabato (UNSAM-CNEA); CTQ (UTN FRBA); DQRA (CNEA)Fil: Binetti Basterrechea, Gian Franco. CTQ (UTN FRBA); Argentina.Fil: Finoli, Agostina Sol. CTQ (UTN FRBA); Argentina.Fil: Montesinos, Victor Nahuel. DQRA (CONICET; CNEA); CTQ (UTN FRBA); Argentina.Fil: Quici, Natalia. DQRA (CONICET; CNEA); CTQ (UTN FRBA); Argentina.Peer Reviewed2024-08-02T18:42:55Z2024-08-02T18:42:55Z2023info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articulopdfapplication/pdfhttp://hdl.handle.net/20.500.12272/11222-engenginfo:eu-repo/semantics/openAccess2024-08-02T18:42:55Zhttp://creativecommons.org/licenses/by-nc-nd/4.0/Attribution-NonCommercial-NoDerivatives 4.0 InternacionalCreative Commons, Atribución – No Comercial – Sin Obra Derivadareponame:Repositorio Institucional Abierto (UTN)instname:Universidad Tecnológica Nacional2026-09-24T12:44:30Zoai:ria.utn.edu.ar:20.500.12272/11222instacron:UTNInstitucionalhttp://ria.utn.edu.ar/Universidad públicaNo correspondehttp://ria.utn.edu.ar/oaigestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:a2026-09-24 12:44:30.655Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacionalfalse
dc.title.none.fl_str_mv Iron nanoparticles based nanofluids for in situ environmental remediation
title Iron nanoparticles based nanofluids for in situ environmental remediation
spellingShingle Iron nanoparticles based nanofluids for in situ environmental remediation
Crespi, Julieta
in situ
zerovalent iron nanoparticles
Cr(VI)
stable nanofluids
title_short Iron nanoparticles based nanofluids for in situ environmental remediation
title_full Iron nanoparticles based nanofluids for in situ environmental remediation
title_fullStr Iron nanoparticles based nanofluids for in situ environmental remediation
title_full_unstemmed Iron nanoparticles based nanofluids for in situ environmental remediation
title_sort Iron nanoparticles based nanofluids for in situ environmental remediation
dc.creator.none.fl_str_mv Crespi, Julieta
Binetti Basterrechea, Gian Franco
Finoli, Agostina Sol
Montesinos, Victor Nahuel
Quici, Natalia
author Crespi, Julieta
author_facet Crespi, Julieta
Binetti Basterrechea, Gian Franco
Finoli, Agostina Sol
Montesinos, Victor Nahuel
Quici, Natalia
author_role author
author2 Binetti Basterrechea, Gian Franco
Finoli, Agostina Sol
Montesinos, Victor Nahuel
Quici, Natalia
author2_role author
author
author
author
dc.subject.none.fl_str_mv in situ
zerovalent iron nanoparticles
Cr(VI)
stable nanofluids
topic in situ
zerovalent iron nanoparticles
Cr(VI)
stable nanofluids
dc.description.none.fl_txt_mv The injection of nanoscale zerovalent iron particles (nZVI) suspensions in the ground is a technology employed for in situ water and soil remediation. Due to its nature, nZVI forming these nanofluids (NFs), tend to agglomerate, but this can be overcome by polyelectrolyte coatings, that also improve their mobility. In this work, stabilization of nZVI with carboxymethylcellulose (CMC) was studied. NFs prepared with CMC (CMC-NSTAR) were compared with non-stabilized NFs (b-NSTAR). First, the stabilization efficiency was evaluated by the analysis of the nanoparticles sedimentation rate. Then, the mobility of stabilized and non-stabilized NFs was studied in columns filled with porous media at laboratory and pilot scale. Finally, NFs reactivity for the removal of aqueous Cr(VI) was tested in batch and columns experiments. In the column experiments, a porous media bed was loaded with NSTAR and then a Cr(VI) solution was injected upwards. CMC-NSTAR showed good mobility at both scales being successfully eluted from the porous media. In the case of b-NSTAR, the accumulation of nanoparticles in the bottom of the column was observed and elution was not achieved. Using b-NSTAR as reactive barrier, a total removal of 15.5 mg Cr(VI)/g Fe was achieved. Better removal rates were found in batch experiments (22.8 mg Cr(VI)/g Fe). Reactivity experiments in batch with CMC-NSTAR showed 39.9 mg Cr(VI)/g Fe removal. In conclusion, the NF was proved to have good transport properties and Cr(VI) removal capacity.
Fil: Crespi, Julieta. Instituto Sabato (UNSAM-CNEA); CTQ (UTN FRBA); DQRA (CNEA)
Fil: Binetti Basterrechea, Gian Franco. CTQ (UTN FRBA); Argentina.
Fil: Finoli, Agostina Sol. CTQ (UTN FRBA); Argentina.
Fil: Montesinos, Victor Nahuel. DQRA (CONICET; CNEA); CTQ (UTN FRBA); Argentina.
Fil: Quici, Natalia. DQRA (CONICET; CNEA); CTQ (UTN FRBA); Argentina.
Peer Reviewed
description The injection of nanoscale zerovalent iron particles (nZVI) suspensions in the ground is a technology employed for in situ water and soil remediation. Due to its nature, nZVI forming these nanofluids (NFs), tend to agglomerate, but this can be overcome by polyelectrolyte coatings, that also improve their mobility. In this work, stabilization of nZVI with carboxymethylcellulose (CMC) was studied. NFs prepared with CMC (CMC-NSTAR) were compared with non-stabilized NFs (b-NSTAR). First, the stabilization efficiency was evaluated by the analysis of the nanoparticles sedimentation rate. Then, the mobility of stabilized and non-stabilized NFs was studied in columns filled with porous media at laboratory and pilot scale. Finally, NFs reactivity for the removal of aqueous Cr(VI) was tested in batch and columns experiments. In the column experiments, a porous media bed was loaded with NSTAR and then a Cr(VI) solution was injected upwards. CMC-NSTAR showed good mobility at both scales being successfully eluted from the porous media. In the case of b-NSTAR, the accumulation of nanoparticles in the bottom of the column was observed and elution was not achieved. Using b-NSTAR as reactive barrier, a total removal of 15.5 mg Cr(VI)/g Fe was achieved. Better removal rates were found in batch experiments (22.8 mg Cr(VI)/g Fe). Reactivity experiments in batch with CMC-NSTAR showed 39.9 mg Cr(VI)/g Fe removal. In conclusion, the NF was proved to have good transport properties and Cr(VI) removal capacity.
publishDate 2023
dc.date.none.fl_str_mv 2023
2024-08-02T18:42:55Z
2024-08-02T18:42:55Z
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12272/11222
-
url http://hdl.handle.net/20.500.12272/11222
identifier_str_mv -
dc.language.none.fl_str_mv eng
eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
2024-08-02T18:42:55Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Creative Commons, Atribución – No Comercial – Sin Obra Derivada
eu_rights_str_mv openAccess
rights_invalid_str_mv 2024-08-02T18:42:55Z
http://creativecommons.org/licenses/by-nc-nd/4.0/
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Creative Commons, Atribución – No Comercial – Sin Obra Derivada
dc.format.none.fl_str_mv pdf
application/pdf
dc.source.none.fl_str_mv reponame:Repositorio Institucional Abierto (UTN)
instname:Universidad Tecnológica Nacional
reponame_str Repositorio Institucional Abierto (UTN)
collection Repositorio Institucional Abierto (UTN)
instname_str Universidad Tecnológica Nacional
repository.name.fl_str_mv Repositorio Institucional Abierto (UTN) - Universidad Tecnológica Nacional
repository.mail.fl_str_mv gestionria@rec.utn.edu.ar; fsuarez@rec.utn.edu.ar
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score 13.24418

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