Electro-catalytic Reduction of Aqueous Nitrates using Cu-Sn and Cu-Pd Cathodes
El articulo describe la remoción de nitratos y nitritos en agua para potabilización por un proceso electrocatalitico en escala laboratorio y piloto Water treatment systems are used globally to reduce environmental impacts or to provide potable water, thus fulfilling established water quality standar...
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International Journal of Electrochemical Science
2018
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ftunivaemexico:oai:ri.uaemex.mx:20.500.11799/99375 2023-05-15T15:52:50+02:00 Electro-catalytic Reduction of Aqueous Nitrates using Cu-Sn and Cu-Pd Cathodes WEBER, BERND; 436715 CHAVEZ MEJIA, ALMA CONCEPCION; 120943 Stadlbauer, Ernst A.;x1341460 WEBER, BERND CHAVEZ MEJIA, ALMA CONCEPCION Stadlbauer, Ernst A. 2018-11-30 http://hdl.handle.net/20.500.11799/99375 eng eng International Journal of Electrochemical Science 14; 1452-3981 http://hdl.handle.net/20.500.11799/99375 openAccess http://creativecommons.org/licenses/by-nc-nd/4.0 CC-BY-NC-ND Copper-tin electrode Palladium-Copper Catalyst Groundwater BIOLOGÍA Y QUÍMICA Artículo article 2018 ftunivaemexico 2020-10-19T06:08:02Z El articulo describe la remoción de nitratos y nitritos en agua para potabilización por un proceso electrocatalitico en escala laboratorio y piloto Water treatment systems are used globally to reduce environmental impacts or to provide potable water, thus fulfilling established water quality standards. Electrocatalytic nitrate removal is a promising tool to address upcoming problems related to nitrate contamination. This study compares the employment of a low cost CuSn6 based catalyst with a noble metal Cu - Pd catalyst in a laboratory and a continuously operating pilot apparatus to treat nitrate contaminated water from a well. In contrast with common applications, a saturated carbonic acid was used as the anolyte solution, which stabilized the pH in the anode compartment as well as in the cathode compartment. The best performance, as determined by nitrate removal and nitrogen transfer into the gas phase, was reached with a specific current of 1.16 A m-2 for the laboratory apparatus and 1.53 A m-2 for the pilot plant apparatus. However, other parameters such as pH (influenced by anolyte solution) and catalyst selection also had an impact on the nitrate reduction performance with the consequence that process optimization should be realized on-site while running a pilot plant. Process gas analysis by mass spectroscopy revealed the presence of hydrogen, which suggests that a combination of the system with heterogeneous catalysts should be used for additional nitrogen reduction at potential free surfaces. Article in Journal/Newspaper Carbonic acid RI UAEMex (Repositorio Institucional de la Universidad Autónoma del Estado de México) |
institution |
Open Polar |
collection |
RI UAEMex (Repositorio Institucional de la Universidad Autónoma del Estado de México) |
op_collection_id |
ftunivaemexico |
language |
English |
topic |
Copper-tin electrode Palladium-Copper Catalyst Groundwater BIOLOGÍA Y QUÍMICA |
spellingShingle |
Copper-tin electrode Palladium-Copper Catalyst Groundwater BIOLOGÍA Y QUÍMICA WEBER, BERND; 436715 CHAVEZ MEJIA, ALMA CONCEPCION; 120943 Stadlbauer, Ernst A.;x1341460 WEBER, BERND CHAVEZ MEJIA, ALMA CONCEPCION Stadlbauer, Ernst A. Electro-catalytic Reduction of Aqueous Nitrates using Cu-Sn and Cu-Pd Cathodes |
topic_facet |
Copper-tin electrode Palladium-Copper Catalyst Groundwater BIOLOGÍA Y QUÍMICA |
description |
El articulo describe la remoción de nitratos y nitritos en agua para potabilización por un proceso electrocatalitico en escala laboratorio y piloto Water treatment systems are used globally to reduce environmental impacts or to provide potable water, thus fulfilling established water quality standards. Electrocatalytic nitrate removal is a promising tool to address upcoming problems related to nitrate contamination. This study compares the employment of a low cost CuSn6 based catalyst with a noble metal Cu - Pd catalyst in a laboratory and a continuously operating pilot apparatus to treat nitrate contaminated water from a well. In contrast with common applications, a saturated carbonic acid was used as the anolyte solution, which stabilized the pH in the anode compartment as well as in the cathode compartment. The best performance, as determined by nitrate removal and nitrogen transfer into the gas phase, was reached with a specific current of 1.16 A m-2 for the laboratory apparatus and 1.53 A m-2 for the pilot plant apparatus. However, other parameters such as pH (influenced by anolyte solution) and catalyst selection also had an impact on the nitrate reduction performance with the consequence that process optimization should be realized on-site while running a pilot plant. Process gas analysis by mass spectroscopy revealed the presence of hydrogen, which suggests that a combination of the system with heterogeneous catalysts should be used for additional nitrogen reduction at potential free surfaces. |
format |
Article in Journal/Newspaper |
author |
WEBER, BERND; 436715 CHAVEZ MEJIA, ALMA CONCEPCION; 120943 Stadlbauer, Ernst A.;x1341460 WEBER, BERND CHAVEZ MEJIA, ALMA CONCEPCION Stadlbauer, Ernst A. |
author_facet |
WEBER, BERND; 436715 CHAVEZ MEJIA, ALMA CONCEPCION; 120943 Stadlbauer, Ernst A.;x1341460 WEBER, BERND CHAVEZ MEJIA, ALMA CONCEPCION Stadlbauer, Ernst A. |
author_sort |
WEBER, BERND; 436715 |
title |
Electro-catalytic Reduction of Aqueous Nitrates using Cu-Sn and Cu-Pd Cathodes |
title_short |
Electro-catalytic Reduction of Aqueous Nitrates using Cu-Sn and Cu-Pd Cathodes |
title_full |
Electro-catalytic Reduction of Aqueous Nitrates using Cu-Sn and Cu-Pd Cathodes |
title_fullStr |
Electro-catalytic Reduction of Aqueous Nitrates using Cu-Sn and Cu-Pd Cathodes |
title_full_unstemmed |
Electro-catalytic Reduction of Aqueous Nitrates using Cu-Sn and Cu-Pd Cathodes |
title_sort |
electro-catalytic reduction of aqueous nitrates using cu-sn and cu-pd cathodes |
publisher |
International Journal of Electrochemical Science |
publishDate |
2018 |
url |
http://hdl.handle.net/20.500.11799/99375 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_relation |
14; 1452-3981 http://hdl.handle.net/20.500.11799/99375 |
op_rights |
openAccess http://creativecommons.org/licenses/by-nc-nd/4.0 |
op_rightsnorm |
CC-BY-NC-ND |
_version_ |
1766387938723102720 |