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dc.contributor.author
Beltrame, Thiago Favarini
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Miranda Zoppas, Fernanda
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Ferreira, J. Z.
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Marchesini, Fernanda Albana
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Bernardes, Andrea Moura
dc.date.available
2022-09-23T13:39:56Z
dc.date.issued
2021-07
dc.identifier.citation
Beltrame, Thiago Favarini; Miranda Zoppas, Fernanda; Ferreira, J. Z.; Marchesini, Fernanda Albana; Bernardes, Andrea Moura; Nitrate reduction by electrochemical processes using copper electrode: Evaluating operational parameters aiming low nitrite formation; IWA Publishing; Water Science And Technology; 84; 1; 7-2021; 200-215
dc.identifier.issn
0273-1223
dc.identifier.uri
http://hdl.handle.net/11336/170179
dc.description.abstract
This work aims to present different electroreduction and electrocatalytic processes configurations to treat nitrate contaminated water. The parameters tested were: current density, cell potential, electrode potential, pH values, cell type and catalyst use. It was found that the nitrite ion is present in all process variations used, being the resulting nitrite concentration higher in an alkaline pH. The increase in current density on galvanostatic operation mode provides a greater reduction of nitrate (64%, 1.4 mA cm-2) if compared to the potentiostatic (20%) and constant cell potential (37%) configurations. In a dual-chamber cell the nitrate reduction with current density of 1.4 mA cm-2 was tested and obtained as a NO3- reduction of 85%. The use of single chamber cell presented 32 + 3% of nitrate reduction, indicating that in this cell type the nitrate reduction is smaller than in dual-chamber cell (64%). The presence of a Pd catalyst with 3.1% wt. decreased the nitrite (1.0 N-mg L-1) and increased the gaseous compounds (9.4 N-mg L-1) formation. The best configuration showed that, by fixing the current density, the highest nitrate reduction is obtained and the pH presents a significant influence during the tests. The use of the catalyst decreased the nitrite and enhanced the gaseous compounds formation.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
IWA Publishing
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
COPPER ELECTRODE
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ELECTROCATALYSIS
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ELECTROREDUCTION
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NITRATE REDUCTION
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OPERATIONAL PARAMETERS
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PD CATALYST
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Otras Ciencias de la Tierra y relacionadas con el Medio Ambiente
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Nitrate reduction by electrochemical processes using copper electrode: Evaluating operational parameters aiming low nitrite formation
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-04-28T20:40:09Z
dc.journal.volume
84
dc.journal.number
1
dc.journal.pagination
200-215
dc.journal.pais
Reino Unido
dc.description.fil
Fil: Beltrame, Thiago Favarini. Universidade Federal do Rio Grande do Sul; Brasil
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Fil: Miranda Zoppas, Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
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Fil: Ferreira, J. Z.. Universidade Federal do Rio Grande do Sul; Brasil
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Fil: Marchesini, Fernanda Albana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera". Universidad Nacional del Litoral. Instituto de Investigaciones en Catálisis y Petroquímica "Ing. José Miguel Parera"; Argentina
dc.description.fil
Fil: Bernardes, Andrea Moura. Universidade Federal do Rio Grande do Sul; Brasil
dc.journal.title
Water Science And Technology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://iwaponline.com/wst/article/doi/10.2166/wst.2021.215/82405/Nitrate-reduction-by-electrochemical-processes
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.2166/wst.2021.215
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