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dc.contributor.author
Mendow, Gustavo
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dc.contributor.author
Sánchez, Agustina
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dc.contributor.author
Grosso, C.
dc.contributor.author
Querini, Carlos Alberto
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dc.date.available
2018-04-19T20:30:54Z
dc.date.issued
2017-02
dc.identifier.citation
Mendow, Gustavo; Sánchez, Agustina; Grosso, C.; Querini, Carlos Alberto; A novel process for nitrate reduction in water using bimetallic Pd-Cu catalysts supported on ion exchange resin; Elsevier; Journal of Environmental Chemical Engineering; 5; 2; 2-2017; 1404-1414
dc.identifier.issn
2213-3437
dc.identifier.uri
http://hdl.handle.net/11336/42762
dc.description.abstract
In this work, a Pd-Cu catalyst supported on a macroporous anionexchange resin was used in two novel processes to treat watercontaminated with nitrates. The catalytic performance was evaluated in acontinuous fixed bed reactor. The process (Reaction + Ion Exchange) -Regeneration, named RIE-R, has two steps: 1- reaction and ion exchange(RIE); 2- Regeneration (R). It was found that a hydrogen flow rateincrease does not affect the nitrate conversion during the RIE step,while the selectivity to nitrogen decreased. The presence of competingions (sulphate, bicarbonate, chlorides) led to a decrease in the nitrateconversion. In any case, the water obtained in the process meets thelimits established by the World Health Organization. During theregeneration step, carried out just by bubbling hydrogen to the catalyticbed, 100% of nitrates present in the resin at the end of the RIE cyclewere eliminated.The other process, named IE-R, has a first step in which only ionexchange of nitrates occurs, and a second one during which the catalystis regenerated. This process has worse performance compared to the RIE-R.Only 36.7% of the nitrates present in the resin at the beginning of theregeneration were eliminated.The catalyst was characterized by CO chemisorption, SEM, EPMA, TEM, andXRD. Pd migration towards the external surface occurs during thereaction, and also a decreased in dispersion takes place. This has littleeffect on the activity for nitrate reduction.A regeneration mechanism is presented to explain the experimentalobservations.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Nitrates Reduction
dc.subject
Pd-Cu
dc.subject
Ion Exchange Resin,
dc.subject
Continuous Process
dc.subject.classification
Otras Ingeniería Química
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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
A novel process for nitrate reduction in water using bimetallic Pd-Cu catalysts supported on ion exchange resin
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-04-13T13:55:19Z
dc.journal.volume
5
dc.journal.number
2
dc.journal.pagination
1404-1414
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Mendow, Gustavo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
dc.description.fil
Fil: Sánchez, Agustina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
dc.description.fil
Fil: Grosso, C.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
dc.description.fil
Fil: Querini, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Investigaciones en Catálisis y Petroquímica ; Argentina
dc.journal.title
Journal of Environmental Chemical Engineering
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.jece.2017.01.033
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S2213343717300337
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