Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Pentachlorophenol aerobic removal in a sequential reactor: start-up procedure and kinetic study. |
| Abstract | This study has demonstrated the applicability of a simple technology such as the sequencing batch reactor (SBR), operated with suspended biomass, to the aerobic biodegradation of a highly toxic compound, the pentachlorophenol (PCP). An enrichment of a microbial consortium, originated from the biomass of an urban wastewater treatment plant, was performed and 70 days were sufficient to achieve removal efficiencies of 90% with the compound fed as only carbon and energy source Once completed the start-up period, the SBR was operated with the acclimatized biomass for 60 days at a feed concentration of PCP in the range of 10-20 mgL(-1). Improved performance was observed at increased influent concentration and the reached removal efficiency for the highest concentrations was stable at values >=90%. Kinetic and stoichiometric characterization of the acclimated biomass was performed with biodegradation tests carried out in the bioreactor during the reaction phase. The classical and a modified four-parameter forms of the Haldane equation were applied to model the substrate inhibited kinetics. Both models provided reliable predictions with high correlation coefficients (>0.99). The biomass characterization was completed with the evaluation of the growth yield coefficient, Y (0.075 on chemical oxygen demand base) and endogenous respiration rate, b (0.054 d(-1)). The aerobic SBR, operated in the metabolic mode with a mixed culture, showed superior performance in comparison to continuous systems applied in the same range of PCP influent loads and achieved removal rates are suitable for application. |
| Source | Environmental technology 36 (3), pp. 327–35 |
| Journal | Environmental technology |
| Editor | Taylor & Francis, Abingdon, Regno Unito |
| Year | 2015 |
| Type | Articolo in rivista |
| DOI | 10.1080/09593330.2014.946099 |
| Authors | Mosca Angelucci, Domenica; Tomei, M Concetta |
| Text | 323344 2015 10.1080/09593330.2014.946099 ISI Web of Science WOS 25514134 Pentachlorophenol aerobic removal in a sequential reactor start up procedure and kinetic study. Mosca Angelucci, Domenica; Tomei, M Concetta Water Research Institute, C.N.R., Via Salaria km 29.300, CP 10 00015 Monterotondo Stazione, Rome, Italy This study has demonstrated the applicability of a simple technology such as the sequencing batch reactor SBR , operated with suspended biomass, to the aerobic biodegradation of a highly toxic compound, the pentachlorophenol PCP . An enrichment of a microbial consortium, originated from the biomass of an urban wastewater treatment plant, was performed and 70 days were sufficient to achieve removal efficiencies of 90% with the compound fed as only carbon and energy source Once completed the start up period, the SBR was operated with the acclimatized biomass for 60 days at a feed concentration of PCP in the range of 10 20 mgL 1 . Improved performance was observed at increased influent concentration and the reached removal efficiency for the highest concentrations was stable at values >=90%. Kinetic and stoichiometric characterization of the acclimated biomass was performed with biodegradation tests carried out in the bioreactor during the reaction phase. The classical and a modified four parameter forms of the Haldane equation were applied to model the substrate inhibited kinetics. Both models provided reliable predictions with high correlation coefficients >0.99 . The biomass characterization was completed with the evaluation of the growth yield coefficient, Y 0.075 on chemical oxygen demand base and endogenous respiration rate, b 0.054 d 1 . The aerobic SBR, operated in the metabolic mode with a mixed culture, showed superior performance in comparison to continuous systems applied in the same range of PCP influent loads and achieved removal rates are suitable for application. 36 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 |