Degradation of hexacyanoferrate (III) ion by the coupling of the ultraviolet light and the activation of persulfate at basic pH
The ultraviolet light activation of persulfate (PS) under alkaline conditions was evaluated for treating hexacyanoferrate (III) ion ([Fe(CN)6]3-). The effect of the wavelength type (i.e., UVA and UVC), initial PS concentration (0.3, 0.6, and 0.9 g L−1), and pH value (11 and 13) on the degradation of...
- Autores:
-
Ibargüen-López, Héctor
López-Balanta, Brian
Betancourt Buitrago, Luis Andrés
Serna-Galvis, Efraim A.
Torres-Palma, Ricardo A.
Machuca-Martinez, Fiderman
Castilla-Acevedo, Samir
- Tipo de recurso:
- http://purl.org/coar/resource_type/c_816b
- Fecha de publicación:
- 2021
- Institución:
- Corporación Universidad de la Costa
- Repositorio:
- REDICUC - Repositorio CUC
- Idioma:
- eng
- OAI Identifier:
- oai:repositorio.cuc.edu.co:11323/8686
- Acceso en línea:
- https://hdl.handle.net/11323/8686
https://doi.org/10.1016/j.jece.2021.106233
https://repositorio.cuc.edu.co/
- Palabra clave:
- Persulfate
Mining wastewater
Advanced oxidation processes
Ultraviolet light
Hexacyanoferrate (III) ion
Free cyanide
- Rights
- openAccess
- License
- CC0 1.0 Universal
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oai:repositorio.cuc.edu.co:11323/8686 |
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|
dc.title.spa.fl_str_mv |
Degradation of hexacyanoferrate (III) ion by the coupling of the ultraviolet light and the activation of persulfate at basic pH |
title |
Degradation of hexacyanoferrate (III) ion by the coupling of the ultraviolet light and the activation of persulfate at basic pH |
spellingShingle |
Degradation of hexacyanoferrate (III) ion by the coupling of the ultraviolet light and the activation of persulfate at basic pH Persulfate Mining wastewater Advanced oxidation processes Ultraviolet light Hexacyanoferrate (III) ion Free cyanide |
title_short |
Degradation of hexacyanoferrate (III) ion by the coupling of the ultraviolet light and the activation of persulfate at basic pH |
title_full |
Degradation of hexacyanoferrate (III) ion by the coupling of the ultraviolet light and the activation of persulfate at basic pH |
title_fullStr |
Degradation of hexacyanoferrate (III) ion by the coupling of the ultraviolet light and the activation of persulfate at basic pH |
title_full_unstemmed |
Degradation of hexacyanoferrate (III) ion by the coupling of the ultraviolet light and the activation of persulfate at basic pH |
title_sort |
Degradation of hexacyanoferrate (III) ion by the coupling of the ultraviolet light and the activation of persulfate at basic pH |
dc.creator.fl_str_mv |
Ibargüen-López, Héctor López-Balanta, Brian Betancourt Buitrago, Luis Andrés Serna-Galvis, Efraim A. Torres-Palma, Ricardo A. Machuca-Martinez, Fiderman Castilla-Acevedo, Samir |
dc.contributor.author.spa.fl_str_mv |
Ibargüen-López, Héctor López-Balanta, Brian Betancourt Buitrago, Luis Andrés Serna-Galvis, Efraim A. Torres-Palma, Ricardo A. Machuca-Martinez, Fiderman Castilla-Acevedo, Samir |
dc.subject.spa.fl_str_mv |
Persulfate Mining wastewater Advanced oxidation processes Ultraviolet light Hexacyanoferrate (III) ion Free cyanide |
topic |
Persulfate Mining wastewater Advanced oxidation processes Ultraviolet light Hexacyanoferrate (III) ion Free cyanide |
description |
The ultraviolet light activation of persulfate (PS) under alkaline conditions was evaluated for treating hexacyanoferrate (III) ion ([Fe(CN)6]3-). The effect of the wavelength type (i.e., UVA and UVC), initial PS concentration (0.3, 0.6, and 0.9 g L−1), and pH value (11 and 13) on the degradation of 50 mg L−1 of [Fe(CN)6]3- were studied. Finally, the role of the main degrading agents (SO4•-, O2•-, or HO•) involved in the degradation process was determined using scavengers and a degradation pathway for [Fe(CN)6]3- was proposed. Results show that [Fe(CN)6]3- can be decomposed by UVC light, while UVA is not effective neither in [Fe(CN)6]3- photolysis nor in the activation of PS. Alkaline activation alone at pH 13 can also not degrade the cyanocomplex. However, the combination of UVC with PS (0.3 g L−1) at pH 13 showed high efficiency in the elimination of [Fe(CN)6]3-, achieving 93.3% of removal after 125 min of treatment. The highest CN- release and Fe dissolved removal also occurs at pH 13 and 0.3 g L−1 PS. Further increases in initial PS concentrations may lead to an excess of radicals in solution, resulting in detrimental recombination reactions that affect the efficiency of the process. Quenching tests showed that the importance of radicals involved in the degradation of [Fe(CN)6]3- follows the order: HO• > O2•- >>> 1O2 or SO4•-, and allowed to demonstrate that singlet oxygen could participate in the UVC photolysis of [Fe(CN)6]3-. All these results suggest the feasibility of this technology to treat this type of industrial wastewater efficiently. |
publishDate |
2021 |
dc.date.accessioned.none.fl_str_mv |
2021-09-13T20:07:52Z |
dc.date.available.none.fl_str_mv |
2021-09-13T20:07:52Z |
dc.date.issued.none.fl_str_mv |
2021 |
dc.date.embargoEnd.none.fl_str_mv |
2023 |
dc.type.spa.fl_str_mv |
Pre-Publicación |
dc.type.coar.spa.fl_str_mv |
http://purl.org/coar/resource_type/c_816b |
dc.type.content.spa.fl_str_mv |
Text |
dc.type.driver.spa.fl_str_mv |
info:eu-repo/semantics/preprint |
dc.type.redcol.spa.fl_str_mv |
http://purl.org/redcol/resource_type/ARTOTR |
dc.type.version.spa.fl_str_mv |
info:eu-repo/semantics/acceptedVersion |
format |
http://purl.org/coar/resource_type/c_816b |
status_str |
acceptedVersion |
dc.identifier.issn.spa.fl_str_mv |
2213-3437 |
dc.identifier.uri.spa.fl_str_mv |
https://hdl.handle.net/11323/8686 |
dc.identifier.doi.spa.fl_str_mv |
https://doi.org/10.1016/j.jece.2021.106233 |
dc.identifier.instname.spa.fl_str_mv |
Corporación Universidad de la Costa |
dc.identifier.reponame.spa.fl_str_mv |
REDICUC - Repositorio CUC |
dc.identifier.repourl.spa.fl_str_mv |
https://repositorio.cuc.edu.co/ |
identifier_str_mv |
2213-3437 Corporación Universidad de la Costa REDICUC - Repositorio CUC |
url |
https://hdl.handle.net/11323/8686 https://doi.org/10.1016/j.jece.2021.106233 https://repositorio.cuc.edu.co/ |
dc.language.iso.none.fl_str_mv |
eng |
language |
eng |
dc.rights.spa.fl_str_mv |
CC0 1.0 Universal |
dc.rights.uri.spa.fl_str_mv |
http://creativecommons.org/publicdomain/zero/1.0/ |
dc.rights.accessrights.spa.fl_str_mv |
info:eu-repo/semantics/openAccess |
dc.rights.coar.spa.fl_str_mv |
http://purl.org/coar/access_right/c_abf2 |
rights_invalid_str_mv |
CC0 1.0 Universal http://creativecommons.org/publicdomain/zero/1.0/ http://purl.org/coar/access_right/c_abf2 |
eu_rights_str_mv |
openAccess |
dc.format.mimetype.spa.fl_str_mv |
application/pdf |
dc.publisher.spa.fl_str_mv |
Corporación Universidad de la Costa |
dc.source.spa.fl_str_mv |
Journal of Environmental Chemical Engineering |
institution |
Corporación Universidad de la Costa |
dc.source.url.spa.fl_str_mv |
https://www.sciencedirect.com/science/article/abs/pii/S2213343721012100?via%3Dihub |
bitstream.url.fl_str_mv |
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Ibargüen-López, HéctorLópez-Balanta, BrianBetancourt Buitrago, Luis AndrésSerna-Galvis, Efraim A.Torres-Palma, Ricardo A.Machuca-Martinez, FidermanCastilla-Acevedo, Samir2021-09-13T20:07:52Z2021-09-13T20:07:52Z202120232213-3437https://hdl.handle.net/11323/8686https://doi.org/10.1016/j.jece.2021.106233Corporación Universidad de la CostaREDICUC - Repositorio CUChttps://repositorio.cuc.edu.co/The ultraviolet light activation of persulfate (PS) under alkaline conditions was evaluated for treating hexacyanoferrate (III) ion ([Fe(CN)6]3-). The effect of the wavelength type (i.e., UVA and UVC), initial PS concentration (0.3, 0.6, and 0.9 g L−1), and pH value (11 and 13) on the degradation of 50 mg L−1 of [Fe(CN)6]3- were studied. Finally, the role of the main degrading agents (SO4•-, O2•-, or HO•) involved in the degradation process was determined using scavengers and a degradation pathway for [Fe(CN)6]3- was proposed. Results show that [Fe(CN)6]3- can be decomposed by UVC light, while UVA is not effective neither in [Fe(CN)6]3- photolysis nor in the activation of PS. Alkaline activation alone at pH 13 can also not degrade the cyanocomplex. However, the combination of UVC with PS (0.3 g L−1) at pH 13 showed high efficiency in the elimination of [Fe(CN)6]3-, achieving 93.3% of removal after 125 min of treatment. The highest CN- release and Fe dissolved removal also occurs at pH 13 and 0.3 g L−1 PS. Further increases in initial PS concentrations may lead to an excess of radicals in solution, resulting in detrimental recombination reactions that affect the efficiency of the process. Quenching tests showed that the importance of radicals involved in the degradation of [Fe(CN)6]3- follows the order: HO• > O2•- >>> 1O2 or SO4•-, and allowed to demonstrate that singlet oxygen could participate in the UVC photolysis of [Fe(CN)6]3-. All these results suggest the feasibility of this technology to treat this type of industrial wastewater efficiently.Ibargüen-López, HéctorLópez-Balanta, BrianBetancourt Buitrago, Luis Andrés-will be generated-orcid-0000-0002-3931-5080-600Serna-Galvis, Efraim A.-will be generated-orcid-0000-0001-5569-7878-600Torres-Palma, Ricardo A.Machuca-Martinez, Fiderman-will be generated-orcid-0000-0002-4553-3957-600Castilla-Acevedo, Samir-will be generated-orcid-0000-0002-1218-4623-600application/pdfengCorporación Universidad de la CostaCC0 1.0 Universalhttp://creativecommons.org/publicdomain/zero/1.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Journal of Environmental Chemical Engineeringhttps://www.sciencedirect.com/science/article/abs/pii/S2213343721012100?via%3DihubPersulfateMining wastewaterAdvanced oxidation processesUltraviolet lightHexacyanoferrate (III) ionFree cyanideDegradation of hexacyanoferrate (III) ion by the coupling of the ultraviolet light and the 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