Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | The use of used automobile tyres in a partitioning bioreactor for the biodegradation of xenobiotic mixtures |
| Abstract | Waste tyres were utilized as the sorption phase in a two-phase partitioning bioreactor (TPPB) for the biodegradation of a binary mixture of 2,4-dichlorophenol (DCP) and 4-nitrophenol (4NP). These compounds are extensively used in the chemical industry and are found in many industrial effluents. Although both compounds are toxic and are on the EPA list of priority pollutants, a higher inhibitory effect on microorganisms is exerted by DCP, and our experimental tests were focused on strategies to reduce its negative impact on microbial activity. Sorption/desorption tests for the DCP-4NP mixture were first performed to verify the related uptake/release rates by the tyres, which showed that the tyres had a higher capacity for DCP uptake and practically no affinity for 4NP. An acclimatized mixed culture was then utilized in a sequencing batch reactor (SBR) operated in conventional and two-phase mode. For the binary DCP-4NP mixture a significant reduction in DCP toxicity, and a concomitant enhancement in substrate removal efficiency (up to 83%for DCP and approximate to 100% for 4NP) were clearly seen for the TPPB operated with 10% and 15% v/v tyres, for influent concentrations up to 180mg/L, with practically negligible biodegradation in the conventional single phase reactor. The long-term utilization of tyres was confirmed at an influent loading of 180mg/L with a test performed over 20 work cycles showing an improvement of the removal performance for both compounds. |
| Source | Environmental technology 35 (1), pp. 75–81 |
| Keywords | re-utilization of tyresmixtures of xenobioticstwo-phase partitioning bioreactorssequential bioreactorsselective removal |
| Journal | Environmental technology |
| Editor | Taylor & Francis, Abingdon, Regno Unito |
| Year | 2014 |
| Type | Articolo in rivista |
| DOI | 10.1080/09593330.2013.811529 |
| Authors | Tomei, M. Concetta; Angelucci, Domenica Mosca; Daugulis, Andrew J. |
| Text | 323448 2014 10.1080/09593330.2013.811529 ISI Web of Science WOS 000328108700010 re utilization of tyres mixtures of xenobiotics two phase partitioning bioreactors sequential bioreactors selective removal The use of used automobile tyres in a partitioning bioreactor for the biodegradation of xenobiotic mixtures Tomei, M. Concetta; Angelucci, Domenica Mosca; Daugulis, Andrew J. Consiglio Nazionale delle Ricerche CNR ; Queens University Canada Waste tyres were utilized as the sorption phase in a two phase partitioning bioreactor TPPB for the biodegradation of a binary mixture of 2,4 dichlorophenol DCP and 4 nitrophenol 4NP . These compounds are extensively used in the chemical industry and are found in many industrial effluents. Although both compounds are toxic and are on the EPA list of priority pollutants, a higher inhibitory effect on microorganisms is exerted by DCP, and our experimental tests were focused on strategies to reduce its negative impact on microbial activity. Sorption/desorption tests for the DCP 4NP mixture were first performed to verify the related uptake/release rates by the tyres, which showed that the tyres had a higher capacity for DCP uptake and practically no affinity for 4NP. An acclimatized mixed culture was then utilized in a sequencing batch reactor SBR operated in conventional and two phase mode. For the binary DCP 4NP mixture a significant reduction in DCP toxicity, and a concomitant enhancement in substrate removal efficiency up to 83%for DCP and approximate to 100% for 4NP were clearly seen for the TPPB operated with 10% and 15% v/v tyres, for influent concentrations up to 180mg/L, with practically negligible biodegradation in the conventional single phase reactor. The long term utilization of tyres was confirmed at an influent loading of 180mg/L with a test performed over 20 work cycles showing an improvement of the removal performance for both compounds. 35 The use of used automobile tyres in a partitioning bioreactor for the biodegradation of xenobiotic mixtures ET_14_.pdf Articolo in rivista Taylor Francis 0959 3330 Environmental technology Environmental technology Environ. technol. Environmental technology. domenica.moscaangelucci MOSCA ANGELUCCI DOMENICA mariaconcetta.tomei TOMEI MARIA CONCETTA TA.P07.002.005 Rimozione di composti xenobiotici da acque di scarico |