Mostrar el registro sencillo del ítem
dc.contributor.author
Mendow, Gustavo
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Marchesini, Fernanda Albana
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Miro, Eduardo Ernesto
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.contributor.author
Querini, Carlos Alberto
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.date.available
2018-08-02T22:09:25Z
dc.date.issued
2011-01
dc.identifier.citation
Mendow, Gustavo; Marchesini, Fernanda Albana; Miro, Eduardo Ernesto; Querini, Carlos Alberto; Evaluation of Pd-In Supported Catalysts for Water Nitrate Abatement in a Fixed-Bed Continuous Reactor; American Chemical Society; Industrial & Engineering Chemical Research; 50; 1-2011; 1911-1920
dc.identifier.issn
0888-5885
dc.identifier.uri
http://hdl.handle.net/11336/54018
dc.description.abstract
The increasing pollution of natural drinking-water sources brings about the development of new emerging technologies and processes for water remediation. In this work, the catalytic reduction of contaminated water containing nitrates (100 mg/L) was studied in a bubble column fixed-bed reactor, working at room temperature and atmospheric pressure and using hydrogen as a reducing agent. The activity and selectivity of these catalysts were evaluated under different reaction conditions (hydrogen flow, water flow, pH, acidifying agent) and verified in a stirred reactor, operating under batch conditions. On SiO2 supported catalysts, it was found that the nitrate conversion increased as theH2 flow was increased, while theN2 selectivity remained almost unaffected. On the other hand, in Al2O3 supported catalysts, an increase in H2 flow improved activity but worsened nitrogen selectivity. The best conversions and selectivity results were obtained when the feed solution was acidified with CO2. Very pronounced pH gradients or high amounts of OH- in the catalytic bed promoted nitrites and ammonium formation, provoking a notorious decrease of N2 selectivity. The highest conversion (100%) was obtained with the Al2O3 supported catalyst aged in the reaction. However, the selectivity to N2 under these conditions was 72%. On the other hand, the best selectivity to N2 was 97%, obtained with the aged SiO2 supported catalyst. In this case, the nitrate conversion was 30%. Characterization results showed that the metallic composition of the catalysts changed both after reduction and after contacting the liquid reaction media. These changes were observed by X-ray photoelectron spectroscopy (XPS) and temperature-programmed reduction (TPR). The catalysts stability was studied and discussed.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Nitrates Abatement
dc.subject.classification
Ingeniería Medioambiental y Geológica, Geotécnicas
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
Ingeniería del Medio Ambiente
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.title
Evaluation of Pd-In Supported Catalysts for Water Nitrate Abatement in a Fixed-Bed Continuous Reactor
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-07-31T17:35:26Z
dc.journal.volume
50
dc.journal.pagination
1911-1920
dc.journal.pais
Estados Unidos
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
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 "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: 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: Querini, Carlos Alberto. 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
Industrial & Engineering Chemical Research
![Se ha confirmado la validez de este valor de autoridad por un usuario](/themes/CONICETDigital/images/authority_control/invisible.gif)
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/ie102080w
Archivos asociados