Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Removal of Organics and Degradation Products from Industrial Wastewater by a Membrane Bioreactor Integrated with Ozone or UV/H2O2 Treatment |
| Abstract | The treatment of a pharmaceutical wastewater resulting from the production of an antibacterial drug (nalidixic acid) was investigated employing a membrane bioreactor (MBR) integrated with either ozonation or UV/H2O2 process. This was achieved by placing chemical oxidation in the recirculation stream of the MBR. A conventional configuration with chemical oxidation as polishing for the MER effluent was also tested as a reference. The synergistic effect of MBR when integrated with chemical oxidation was assessed by monitoring (i) the main wastewater characteristics, (ii) the concentration of nalidixic acid, (iii) the 48 organics identified in the raw wastewater and (iv) the 55 degradation products identified during wastewater treatment. Results showed that MBR integration with ozonation or UV/H2O2 did not cause relevant drawbacks to both biological and filtration processes, with COD removal rates in the range 85-95%. Nalidixic acid passed undegraded through the MBR and was completely removed in the chemical oxidation step. Although the polishing configuration appeared to give better performances than the integrated system in removing 15 out of 48 secondary organics while similar removals were obtained for 19 other compounds. The benefit of the integrated system was however evident for the removal of the degradation products. Indeed, the integrated system allowed higher removals for 34 out of 55 degradation products while for only 4 compounds the polishing configuration gave better performance. Overall, results showed the effectiveness of the integrated treatment with both ozone and UV/H2O2. |
| Source | Environmental science & technology 46 (2), pp. 1010–1018 |
| Keywords | OzoneAdvanced Oxidation ProcessMembrane BioreactorIndustrial WastewaterNalidixic Acid |
| Journal | Environmental science & technology |
| Editor | American Chemical Society,, Easton, Pa., Stati Uniti d'America |
| Year | 2012 |
| Type | Articolo in rivista |
| DOI | 10.1021/es202707w |
| Authors | Laera, G.; Cassano, D.; Lopez, A.; Pinto, A.; Pollice, A.; Ricco, G.; Mascolo, G. |
| Text | 42457 2012 10.1021/es202707w ISI Web of Science WOS 000299136200058 Ozone Advanced Oxidation Process Membrane Bioreactor Industrial Wastewater Nalidixic Acid Removal of Organics and Degradation Products from Industrial Wastewater by a Membrane Bioreactor Integrated with Ozone or UV/H2O2 Treatment Laera, G.; Cassano, D.; Lopez, A.; Pinto, A.; Pollice, A.; Ricco, G.; Mascolo, G. CNR; Lab Biol Acque The treatment of a pharmaceutical wastewater resulting from the production of an antibacterial drug nalidixic acid was investigated employing a membrane bioreactor MBR integrated with either ozonation or UV/H2O2 process. This was achieved by placing chemical oxidation in the recirculation stream of the MBR. A conventional configuration with chemical oxidation as polishing for the MER effluent was also tested as a reference. The synergistic effect of MBR when integrated with chemical oxidation was assessed by monitoring i the main wastewater characteristics, ii the concentration of nalidixic acid, iii the 48 organics identified in the raw wastewater and iv the 55 degradation products identified during wastewater treatment. Results showed that MBR integration with ozonation or UV/H2O2 did not cause relevant drawbacks to both biological and filtration processes, with COD removal rates in the range 85 95%. Nalidixic acid passed undegraded through the MBR and was completely removed in the chemical oxidation step. Although the polishing configuration appeared to give better performances than the integrated system in removing 15 out of 48 secondary organics while similar removals were obtained for 19 other compounds. The benefit of the integrated system was however evident for the removal of the degradation products. Indeed, the integrated system allowed higher removals for 34 out of 55 degradation products while for only 4 compounds the polishing configuration gave better performance. Overall, results showed the effectiveness of the integrated treatment with both ozone and UV/H2O2. 46 Published version http //www.scopus.com/record/display.url eid=2 s2.0 84855973872 origin=inward Articolo in rivista American Chemical Society, 0013 936X Environmental science technology Environmental science technology Environ. sci. technol. Environmental science technology. ES T Environmental science and technology CASSANO DANIELA alfieri.pollice POLLICE ALFIERI giuseppe.laera LAERA GIUSEPPE antonio.lopez LOPEZ ANTONIO giuseppe.mascolo MASCOLO GIUSEPPE TA.P07.002.006 Trattamenti avanzati di ossidazione |