Effective catalytic removal of nitrates from drinking water: An unresolved problem?

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Título: Effective catalytic removal of nitrates from drinking water: An unresolved problem?
Autor/es: Ruiz Beviá, Francisco | Fernandez-Torres, Maria J.
Grupo/s de investigación o GITE: Computer Optimization of Chemical Engineering Processes and Technologies (CONCEPT) | Estudios de Transferencia de Materia y Control de Calidad de Aguas (ETMyCCA)
Centro, Departamento o Servicio: Universidad de Alicante. Departamento de Ingeniería Química
Palabras clave: Nitrate | Catalytic reduction | Ammonia byproduct | Drinking water
Área/s de conocimiento: Ingeniería Química
Fecha de publicación: 20-abr-2019
Editor: Elsevier
Cita bibliográfica: Journal of Cleaner Production. 2019, 217: 398-408. doi:10.1016/j.jclepro.2019.01.261
Resumen: Over the past 29 years there have been myriad research efforts into the catalytic removal of nitrates from drinking water. In this work, 147 papers published during that period have been examined from the point of view of the ability of catalysis to produce water that is suitable for human consumption as well as amenable to industrial scale-up at reasonable working conditions of temperature and residence time. After close examination of the aforementioned articles, it is evident that this methodology has fulfilled only half its aims: it is able to reduce the nitrate concentration to guideline levels for human consumption, but it inevitably produces concentrations of ammonia and nitrites that are beyond the accepted limits for safe consumption of water. It is sometimes recommended that catalysis be combined with an ancillary technique, such as adsorption, in order to eliminate the undesirable byproducts mentioned above. However, this implies resorting to extra treatment units at the industrial scale, thus making the whole treatment process more complex and expensive. Our conclusion is that the effective catalytic removal of nitrates from drinking water is a very difficult problem.
URI: http://hdl.handle.net/10045/87660
ISSN: 0959-6526 (Print) | 1879-1786 (Online)
DOI: 10.1016/j.jclepro.2019.01.261
Idioma: eng
Tipo: info:eu-repo/semantics/article
Derechos: © 2019 Elsevier Ltd.
Revisión científica: si
Versión del editor: https://doi.org/10.1016/j.jclepro.2019.01.261
Aparece en las colecciones:INV - CONCEPT - Artículos de Revistas
INV - ETMyCCA - Artículos de Revistas

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