Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Photocatalytic Oxidation of Organic Micro-Pollutants: Pilot Plant Investigation and Mechanistic Aspects of the Degradation Reaction |
| Abstract | An innovative pilot plant based on UVB and TiO2 (Anatase) allowed for photocatalytic degradation of organic micro-pollutants. The catalyst was immobilized onto a channel through which the solution containing a target molecule (methylene blue, MB) was re-circulated. Due to the cationic nature of the MB substrate, the adsorption reaction onto the catalyst surface provided a significant contribution to the overall degradation mechanism due to the negatively charged surface at neutral pH (TiO2 pHzpc=6.8). The influence of the initial MB concentration was investigated in the range 0.3-2.0mg/L with the Langmuir-Hinshelwood (LH) model showing good data correlations at concentrations up to 0.7 mg/L, whereas at higher concentrations a pure zero-order (catalytic) kinetic trend was observed. Flow rate of the re-circulating solution sensibly influenced kinetics after the larger volumes of liquid exposed to UVB=TiO2 and to the better oxygen saturation in the liquid phase. UV-vis and HPLC-MS=MS experimental determinations allowed for identification of MB residual concentration and by-products. |
| Source | Chemical engineering communications 203, pp. 1298–1307 |
| Keywords | Azo-dyes degradation; HPLC-MS=MS; Kinetic degradation products; Methylene blue; Photocatalysis; Pilot plant unit |
| Journal | Chemical engineering communications |
| Editor | Gordon and Breach Science., Philadelphia, etc., Stati Uniti d'America |
| Year | 2016 |
| Type | Articolo in rivista |
| DOI | 10.1080/00986445.2016.1188292 |
| Authors | Petrella A.; Mascolo G.; Murgolo S.; Petruzzelli V.; Ranieri E.; Spasiano D.; Petruzzelli D. |
| Text | 359857 2016 10.1080/00986445.2016.1188292 Scopus 2 s2.0 84982986811 Azo dyes degradation; HPLC MS=MS; Kinetic degradation products; Methylene blue; Photocatalysis; Pilot plant unit Photocatalytic Oxidation of Organic Micro Pollutants Pilot Plant Investigation and Mechanistic Aspects of the Degradation Reaction Petrella A.; Mascolo G.; Murgolo S.; Petruzzelli V.; Ranieri E.; Spasiano D.; Petruzzelli D. Dipartimento di Ingegneria Civile, Ambientale, del Territorio, Edile e Chimica, Politecnico di Bari, Bari, Italy; Laboratorio di Chimica e Tecnologia delle Acque, IRSA, Consiglio Nazionale delle Ricerche, Bari, Italy; Centro Interdipartimentale di Ricerca Industriale su Edilizia e Costruzioni, Bologna, Italy An innovative pilot plant based on UVB and TiO2 Anatase allowed for photocatalytic degradation of organic micro pollutants. The catalyst was immobilized onto a channel through which the solution containing a target molecule methylene blue, MB was re circulated. Due to the cationic nature of the MB substrate, the adsorption reaction onto the catalyst surface provided a significant contribution to the overall degradation mechanism due to the negatively charged surface at neutral pH TiO2 pHzpc=6.8 . The influence of the initial MB concentration was investigated in the range 0.3 2.0mg/L with the Langmuir Hinshelwood LH model showing good data correlations at concentrations up to 0.7 mg/L, whereas at higher concentrations a pure zero order catalytic kinetic trend was observed. Flow rate of the re circulating solution sensibly influenced kinetics after the larger volumes of liquid exposed to UVB=TiO2 and to the better oxygen saturation in the liquid phase. UV vis and HPLC MS=MS experimental determinations allowed for identification of MB residual concentration and by products. 203 Published version http //www.scopus.com/record/display.url eid=2 s2.0 84982986811 origin=inward Articolo in rivista Gordon and Breach Science. 0098 6445 Chemical engineering communications Chemical engineering communications Chem. eng. commun. Chemical engineering communications. sapia.murgolo MURGOLO SAPIA giuseppe.mascolo MASCOLO GIUSEPPE |