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dc.contributor.author
Miranda Zoppas, Fernanda
dc.contributor.author
Bernardes, Andrea Moura
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Miro, Eduardo Ernesto
dc.contributor.author
Marchesini, Fernanda Albana
dc.date.available
2019-11-11T16:36:22Z
dc.date.issued
2018-08-07
dc.identifier.citation
Miranda Zoppas, Fernanda; Bernardes, Andrea Moura; Miro, Eduardo Ernesto; Marchesini, Fernanda Albana; Nitrate Reduction of Brines from Water Desalination Plants Employing a Low Metallic Charge Pd, In Catalyst and Formic Acid as Reducing Agent; Springer; Catalysis Letters; 148; 8; 7-8-2018; 2572-2584
dc.identifier.issn
1011-372X
dc.identifier.uri
http://hdl.handle.net/11336/88458
dc.description.abstract
Abstract: Brines from desalination plants lead to adverse environmental impact; therefore, their treatment by catalytic reduction has become a topic of increasing interest. This work aims to apply catalytic reduction to the treatment of water with high nitrate concentration, employing a low noble metal loading in the catalyst (Pd 1%, In 0.25%). Catalytic nitrate removal was evaluated under various conditions, e.g. at different pH values, by assessing the N2 stripping effect, and by modifying the method of pH correction. A change on the final step of the synthesis was also evaluated as well as the reduction of the active phase by means of H2 flux or by the reduction in the aqueous phase with hydrazine. The synthesis method through hydrazine reduction showed catalytic activity and selectivity comparable to those shown by the hydrogen-reduction method. It was found that activity and selectivity can be manipulated. The ratio between nitrate eliminated and Pd mass employed proved to be very high, and among the best ratios reported so far. The best conditions to obtain total nitrate conversion were obtained when the pH was controlled between 4 and 5. The stripping with N2 to the reaction media resulted in lower selectivity to ammonium. The hydrazine-reduced catalyst characterization showed that the nanoparticles were well dispersed on the surface and had an indium: palladium surface ratio higher than that in the bulk, while the H2-reduced catalyst had more Pd on the surface with lower dispersion.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Springer
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
BRINE
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CATALYTIC REDUCTION
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LOW CHARGE CATALYST
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NITRATE REMOVAL
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WATER TREATMENT
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Ingeniería de Procesos Químicos
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Ingeniería Química
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INGENIERÍAS Y TECNOLOGÍAS
dc.title
Nitrate Reduction of Brines from Water Desalination Plants Employing a Low Metallic Charge Pd, In Catalyst and Formic Acid as Reducing Agent
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-23T20:47:01Z
dc.journal.volume
148
dc.journal.number
8
dc.journal.pagination
2572-2584
dc.journal.pais
Alemania
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. Universidade Federal do Rio Grande do Sul; Brasil
dc.description.fil
Fil: Bernardes, Andrea Moura. Universidade Federal do Rio Grande do Sul; Brasil
dc.description.fil
Fil: Miro, Eduardo Ernesto. 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.journal.title
Catalysis Letters
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://link.springer.com/10.1007/s10562-018-2429-x
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1007/s10562-018-2429-x
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