Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Degradation of carbamazepine by photo(Electro)catalysis on nanostructured TiO2 meshes: Transformation products and reaction pathways |
| Abstract | Carbamazepine (CBZ) is a pharmaceutical compound recalcitrant to conventional wastewater treatment plants and widely detected in wastewater bodies. In the present study, advanced oxidation processes for carbamazepine removal are investigated, with particular regard to the degradation pathways of carbamazepine by photoelectrocatalysis and conventional photocatalysis. Photoelectrocatalysis was carried out onto TiO meshes obtained by Plasma Electrolytic Oxidation, a well-known technique in the field of industrial surface treatments, in view of an easy scale-up of the process. By photoelectrocatalysis, 99% of carbamazepine was removed in 55 min while only 65% removal was achieved by photolysis. The investigation of the transformation products (TPs) was carried out by means of UPLC-QTOF/MS/MS. Several new TPs were identified and accordingly reaction pathways were proposed. Above 80 min the transformation products disappear, probably forming organic acids of low-molecular weight as final degradation products. The results demonstrated that photoelectrocatalysis onto TiO meshes obtained by plasma electrolytic oxidation is a useful alternative to common advanced oxidation processes as wastewater tertiary treatment aimed at removing compounds of emerging concern. |
| Source | Catalysts 10 (2) |
| Keywords | Compounds of emerging concernHeterogeneous photocatalysisImmobilized catalystPhotoelectrocatalysisTitanium dioxideTransformation products |
| Journal | Catalysts |
| Editor | Molecular Diversity Preservation International, Basel, |
| Year | 2020 |
| Type | Articolo in rivista |
| DOI | 10.3390/catal10020169 |
| Authors | Franz, Silvia; Falletta, Ermelinda; Arab, Hamed; Murgolo, Sapia; Bestetti, Massimiliano; Mascolo, Giuseppe |
| Text | 422185 2020 10.3390/catal10020169 Scopus 2 s2.0 85079461753 Compounds of emerging concern Heterogeneous photocatalysis Immobilized catalyst Photoelectrocatalysis Titanium dioxide Transformation products Degradation of carbamazepine by photo Electro catalysis on nanostructured TiO2 meshes Transformation products and reaction pathways Franz, Silvia; Falletta, Ermelinda; Arab, Hamed; Murgolo, Sapia; Bestetti, Massimiliano; Mascolo, Giuseppe Istituto di Ricerca Sulle Acque, Bari; Universita degli Studi di Milano; Politecnico di Milano Carbamazepine CBZ is a pharmaceutical compound recalcitrant to conventional wastewater treatment plants and widely detected in wastewater bodies. In the present study, advanced oxidation processes for carbamazepine removal are investigated, with particular regard to the degradation pathways of carbamazepine by photoelectrocatalysis and conventional photocatalysis. Photoelectrocatalysis was carried out onto TiO meshes obtained by Plasma Electrolytic Oxidation, a well known technique in the field of industrial surface treatments, in view of an easy scale up of the process. By photoelectrocatalysis, 99% of carbamazepine was removed in 55 min while only 65% removal was achieved by photolysis. The investigation of the transformation products TPs was carried out by means of UPLC QTOF/MS/MS. Several new TPs were identified and accordingly reaction pathways were proposed. Above 80 min the transformation products disappear, probably forming organic acids of low molecular weight as final degradation products. The results demonstrated that photoelectrocatalysis onto TiO meshes obtained by plasma electrolytic oxidation is a useful alternative to common advanced oxidation processes as wastewater tertiary treatment aimed at removing compounds of emerging concern. 10 Published version http //www.scopus.com/record/display.url eid=2 s2.0 85079461753 origin=inward Articolo in rivista Molecular Diversity Preservation International 2073 4344 Catalysts Catalysts Catalysts Catalysts. sapia.murgolo MURGOLO SAPIA giuseppe.mascolo MASCOLO GIUSEPPE |