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dc.contributor.author
Beltrame, Thiago
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dc.contributor.author
Miranda Zoppas, Fernanda
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dc.contributor.author
Sacco, Nicolás Alejandro
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dc.contributor.author
Marchesini, Fernanda Albana
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dc.contributor.author
Moura Bernades, Andréa
dc.date.available
2024-03-08T13:12:24Z
dc.date.issued
2023-05
dc.identifier.citation
Beltrame, Thiago; Miranda Zoppas, Fernanda; Sacco, Nicolás Alejandro; Marchesini, Fernanda Albana; Moura Bernades, Andréa; Strategies for Nitrate and Nitrite Removal: Closing the Loop Using Membrane Electroreduction and Catalytic Reduction Processes; Mary Ann Liebert; Environmental Engineering Science; 40; 8; 5-2023; 318-328
dc.identifier.issn
1557-9018
dc.identifier.uri
http://hdl.handle.net/11336/229836
dc.description.abstract
The excessive use of fertilizers is the primary cause of increasing contamination of surface water and groundwater by nitrate ions. To address this problem, this study explores an optimized electroreduction method using a current-voltage approach to reduce nitrate ions. The nitrate electroreduction process employed a copper cathode (Cu) and titanium coated with titanium and ruthenium oxides (Ti/70TiO230RuO2) anode. The use of a current density beyond the limiting one promoted a greater reduction of nitrate. A current density of 3.5 mA/cm2 produced 91% nitrate reduction, resulting in 85 mg/L of N-Nitrite. Subsequently, the research investigates the use of electroreduction and catalytic processes for the treatment of this nitrite brine, aiming at high selectivity for gaseous compounds. To this end, active carbon fiber containing a Pd catalyst was employed. The electroreduction of nitrite achieved 28% and 36% reduction, using a Ti/70TiO230RuO2 anode and Ti/70TiO230RuO2 or Cu cathodes, respectively, at a current density of 2.3 mA/cm2, producing only ammonium ions. On the other hand, the use of nitrite catalytic reduction allowed the complete reduction of N-Nitrites, with high selectivity to gaseous nitrogen (97%). The combined approach of electrochemical reduction, using a current density above the limiting one, and catalytic reduction, with Pd-based carbon fibers, offers several benefits, including selectivity, efficiency, versatility, and sustainability. As such, it represents a promising strategy for the removal of nitrates from water with high selectivity to gaseous compounds, addressing an urgent environmental challenge.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Mary Ann Liebert
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ACTIVATED CARBON FIBERS
dc.subject
NITRATE ELECTROREDUCTION
dc.subject
NITRITE HYDROGENATION
dc.subject
Pd CATALYST
dc.subject.classification
Ingeniería de Procesos Químicos
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dc.subject.classification
Ingeniería Química
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Strategies for Nitrate and Nitrite Removal: Closing the Loop Using Membrane Electroreduction and Catalytic Reduction Processes
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-02-05T13:57:16Z
dc.journal.volume
40
dc.journal.number
8
dc.journal.pagination
318-328
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Nueva York
dc.description.fil
Fil: Beltrame, Thiago. Universidade Federal do Rio Grande do Sul; Brasil
dc.description.fil
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
dc.description.fil
Fil: Sacco, Nicolás Alejandro. 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: 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: Moura Bernades, Andréa. Universidade Federal do Rio Grande do Sul; Brasil
dc.journal.title
Environmental Engineering Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.liebertpub.com/doi/abs/10.1089/ees.2022.0375
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1089/ees.2022.0375
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