Can UV-C laser pulsed irradiation be used for the removal of organic micropollutants from water? Case study with ibuprofen
| Autor: | Luis A. Angurel, Rosario Rodil, Benigno José Sieira, José Benito Quintana, José Ramón Leis, C. Bao-Varela, Germán F. de la Fuente, F. Rey-García |
|---|---|
| Přispěvatelé: | Xunta de Galicia, Universidad de Santiago de Compostela, Gobierno de Aragón, European Commission, Universidade de Santiago de Compostela. Departamento de Química Analítica, Nutrición e Bromatoloxía, Universidade de Santiago de Compostela. Instituto de Investigación e Análises Alimentarias |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Environmental Engineering
Materials science 010504 meteorology & atmospheric sciences Solid-state Ibuprofen 010501 environmental sciences Wastewater 01 natural sciences Water Purification law.invention law UV laser chemistry medicine Environmental Chemistry Irradiation Waste Management and Disposal 0105 earth and related environmental sciences Nanosecond pulses Water Laser Pollution Distilled water Transformation products 266 nm Water treatment Water Pollutants Chemical medicine.drug Nuclear chemistry |
| Zdroj: | Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela instname Digital.CSIC. Repositorio Institucional del CSIC |
| ISSN: | 2017-8476 |
| Popis: | A novel approach based on the direct pulsed irradiation of UV-C light onto ibuprofen (IBP) solutions was evaluated in this work, as proof of concept for the direct removal of micropollutants. The experiments confirmed that laser irradiation is able to completely degrade IBP in 15 min in distilled water, with a DOC depletion of ca. 25% and with transformation products (TPs) remaining in solution and estimated to represent ca. 10% of the initial IBP concentration. In wastewater spiked samples, removal efficiency is slightly lower but still significant (ca. 5% IBP remaining after 15 min). Hence, this work suggests that low power solid state pulsed lasers, emitting at 266 nm wavelength, show promise for the removal of these type of micropollutants from water. These results open new opportunities towards the development of chemical-free water treatment methods based on direct, selective irradiation using state of the art, miniaturized laser devices. This research was partially supported by the Consellería de Educación Program for Development of a Strategic Grouping in Materials - AeMAT at the University of Santiago de Compostela under the Grant No. ED431E2018/08. C. Bao-Varela, B.J. Sieira, J.B. Quintana and R. Rodil also acknowledge Xunta de Galicia (ref. ED431B 2017/64, ref. ED431C2017/36) and Spanish Agencia Estatal de Investigación (CTM2017-84763-C3-R-2). Several of the above mentioned projects are cofounded by the European Regional Development Fund. G.F.F. & L.A.A. acknowledge support from Gobierno de Aragón “Construyendo Europa desde Aragón” (research group T54_20R). |
| Databáze: | OpenAIRE |
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