Photooxidative decomposition and defluorination of perfluorooctanoic acid (PFOA) using an innovative technology of UV–vis/ZnxCu1-xFe2O4/oxalic acid
| Autor: | Mallikarjuna N. Nadagouda, Endalkachew Sahle-Demessie, Bineyam Mezgebe, Sanny Verma |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Environmental Engineering
Health Toxicology and Mutagenesis 0208 environmental biotechnology Oxalic acid 02 engineering and technology 010501 environmental sciences 01 natural sciences Catalysis law.invention chemistry.chemical_compound Ultraviolet visible spectroscopy law Environmental Chemistry Calcination Photodegradation 0105 earth and related environmental sciences Public Health Environmental and Occupational Health General Medicine General Chemistry Pollution Decomposition 020801 environmental engineering chemistry Degradation (geology) Perfluorooctanoic acid Nuclear chemistry |
| Zdroj: | Chemosphere. 280:130660 |
| ISSN: | 0045-6535 |
| DOI: | 10.1016/j.chemosphere.2021.130660 |
| Popis: | Per- and polyfluoroalkyl substances (PFAS) are a large group of perfluorinated organic molecules that have been in use since the 1940s for industrial, commercial, and consumer applications. PFAS are a growing concern because some of them have shown persistent, bioaccumulative and toxic effects. Herein, we demonstrate an innovative technology of UV–vis/ZnxCu1-xFe2O4/oxalic acid for the degradation of perfluorooctanoic acid (PFOA) in water. The magnetically retrievable nanocrystalline heterogeneous ferrite catalysts, ZnxCu1-xFe2O4 were synthesized using a sol-gel auto-combustion process followed by calcination at 400 °C. The combination of ZnxCu1-xFe2O4 and oxalic acid generate reactive species under UV light irradiation. These reactive species are then shown to be capable of the photodegradation of PFOA. The degree of degradation is tracked by identifying transformation products using liquid chromatography coupled with quadrupole time-of-flight mass spectroscopy (LC-QTOF-MS). |
| Databáze: | OpenAIRE |
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