Carlos, L.; Martire, DO.; González, MC.; Gomis Vicens, J.; Bernabeu García, A.; Amat Payá, AM.; Arques Sanz, A. (2012). Photochemical fate of a mixture of emerging pollutants in the presence of humic substances. Water Research. 46(15):4732-4740. https://doi.org/10.1016/j.watres.2012.06.022
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/48842
Título:
|
Photochemical fate of a mixture of emerging pollutants in the presence of humic substances
|
Autor:
|
Carlos, Luciano
Martire, Daniel O.
González, Mónica C.
Gomis Vicens, Juan
Bernabeu García, Antonio
Amat Payá, Ana María
Arques Sanz, Antonio
|
Entidad UPV:
|
Universitat Politècnica de València. Grupo de Procesos de Oxidación Avanzada
Universitat Politècnica de València. Departamento de Ingeniería Textil y Papelera - Departament d'Enginyeria Tèxtil i Paperera
|
Fecha difusión:
|
|
Resumen:
|
The photodegradation of a mixture of the emerging pollutants (EPs) clofibric acid, amoxicillin,
acetamiprid, acetaminophen, carbamazepine, and caffeine was studied under irradiation
with a xenon lamp. The quantum ...[+]
The photodegradation of a mixture of the emerging pollutants (EPs) clofibric acid, amoxicillin,
acetamiprid, acetaminophen, carbamazepine, and caffeine was studied under irradiation
with a xenon lamp. The quantum efficiencies of the EPs were determined when
irradiated individually. Experiments with the mixture of the EPs showed that indirect
photoprocesses attributable to interaction between EPs can either enhance the photodegradation
rate by photosensitization or decrease it by quenching processes. The addition
of humic substances (HS) to the solutions resulted in an increase of indirect photoprocesses
with higher effects on acetaminophen and carbamazepine; this was more
remarkable when a filter was used to cut off radiation in the range 280e295 nm. Experiments
carried out with chemical probes indicated that the triplet excited states of HS play
a major role in the photosensitization process, although the contribution of other species
cannot be completely ruled out. Additionally, V. fischeri toxicity tests showed a synergistic
effect produced by the mixture of EPs before irradiation. Photodegradation resulted in an
enhanced toxicity of the solution at the initial steps of the process, which was associated
both with synergistic effects and with the formation of toxic photodegradation by-products
of clofibric acid.
[-]
|
Palabras clave:
|
Emerging pollutants
,
Humic substances
,
Photolysis
,
Toxicity
,
By-products
|
Derechos de uso:
|
Cerrado |
Fuente:
|
Water Research. (issn:
0043-1354
)
|
DOI:
|
10.1016/j.watres.2012.06.022
|
Editorial:
|
Elsevier
|
Versión del editor:
|
http://dx.doi.org/10.1016/j.watres.2012.06.022
|
Código del Proyecto:
|
info:eu-repo/grantAgreement/EC/FP7/269128/EU/Isolation, Characterization and screening of environmental applications of Bio-Organic substances obtained from urban biomasses (EnvironBOS)/
info:eu-repo/grantAgreement/ANPCyT//00308/
info:eu-repo/grantAgreement/MICINN//CTQ2009-13459-C05-03/ES/Integración de procesos de fotocatálisis solar en la depuración biológica de aguas residuales para la eliminación de contaminantes emergentes (EDARSOL)/
|
Agradecimientos:
|
This research was supported by ANPCyT, Argentina (PICT 2007 No. 00308), and CICPBA, Argentina and by Spanish Ministerio de Educacion y Ciencia (CTQ 2009-13459-C05-03) and European Union (PIRSES-GA-2010-269128, EnvironBOS). ...[+]
This research was supported by ANPCyT, Argentina (PICT 2007 No. 00308), and CICPBA, Argentina and by Spanish Ministerio de Educacion y Ciencia (CTQ 2009-13459-C05-03) and European Union (PIRSES-GA-2010-269128, EnvironBOS). L.C. and M.C.G. are research members of CONICET, Argentina. D.O.M. is a research member of CICPBA. L.C wants to acknowledge Universidad Politecnica de Valencia for supporting his visit to Spain (PAID-02-10).
[-]
|
Tipo:
|
Artículo
|