Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | A novel continuous two-phase partitioning bioreactor operated with polymeric tubing: Performance validation for enhanced biological removal of toxic substrates |
| Abstract | A continuous two-phase partitioning bioreactor (C-TPPB), operated with coiled tubing made of the DuPont polymer Hytrel 8206, was tested for the bioremediation of 4-chlorophenol, as a model toxic compound. The tubing was immersed in the aqueous phase, with the contaminated water flowing tube side, and an adapted microbial culture suspended in the bioreactor itself, with the metabolic demand of the cells creating a concentration gradient to cause the substrate to diffuse into the bioreactor for biodegradation. The system was operated over a range of loadings (tubing influent concentration 750 1500 mg L-1), with near-complete substrate removal in all cases. Distribution of the contaminant at the end of the tests (96 h) highlighted biological removal in the range of 87-95%, while the amount retained in the polymer ranged from similar to 1 to 8%. Mass transfer of the substrate across the tubing wall was not limiting, and the polymer demonstrated the capacity to buffer the substrate loadings and to adapt to microbial metabolism. The impact of C-TPPB operation on biomass activity was also investigated by a kinetic characterization of the microbial culture, which showed better resistance to substrate inhibition after C-TPPB operation, thereby confirming the beneficial effect of sub-inhibitory controlled conditions, characteristic of TPPB systems. (C) 2016 Elsevier B.V. All rights reserved. |
| Source | Journal of environmental management 187, pp. 265–272 |
| Keywords | Continuous two-phase partitioningbioreactorIndustrial wastewaterBiological treatmentToxic substratesPolymer tubingBiodegradation kinetics |
| Journal | Journal of environmental management |
| Editor | Academic Press., New York, Regno Unito |
| Year | 2017 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.jenvman.2016.11.045 |
| Authors | Tomei, M. Concetta; Mosca Angelucci, Domenica ; Daugulis, Andrew J. |
| Text | 368518 2017 10.1016/j.jenvman.2016.11.045 ISI Web of Science WOS 000392037500028 Scopus 2 s2.0 84998961913 Continuous two phase partitioning bioreactor Industrial wastewater Biological treatment Toxic substrates Polymer tubing Biodegradation kinetics A novel continuous two phase partitioning bioreactor operated with polymeric tubing Performance validation for enhanced biological removal of toxic substrates Tomei, M. Concetta; Mosca Angelucci, Domenica ; Daugulis, Andrew J. Istituto di ricerca sulle Acque CNR; Queens University, Kingston , Ontario Canada A continuous two phase partitioning bioreactor C TPPB , operated with coiled tubing made of the DuPont polymer Hytrel 8206, was tested for the bioremediation of 4 chlorophenol, as a model toxic compound. The tubing was immersed in the aqueous phase, with the contaminated water flowing tube side, and an adapted microbial culture suspended in the bioreactor itself, with the metabolic demand of the cells creating a concentration gradient to cause the substrate to diffuse into the bioreactor for biodegradation. The system was operated over a range of loadings tubing influent concentration 750 1500 mg L 1 , with near complete substrate removal in all cases. Distribution of the contaminant at the end of the tests 96 h highlighted biological removal in the range of 87 95%, while the amount retained in the polymer ranged from similar to 1 to 8%. Mass transfer of the substrate across the tubing wall was not limiting, and the polymer demonstrated the capacity to buffer the substrate loadings and to adapt to microbial metabolism. The impact of C TPPB operation on biomass activity was also investigated by a kinetic characterization of the microbial culture, which showed better resistance to substrate inhibition after C TPPB operation, thereby confirming the beneficial effect of sub inhibitory controlled conditions, characteristic of TPPB systems. C 2016 Elsevier B.V. All rights reserved. 187 Published version https //www.scopus.com/record/display.uri eid=2 s2.0 84998961913 origin=resultslist A novel continuous two phase partitioning bioreactor operated with polymeric tubing etc... Tipo documento pdf file Permessi per l accesso al file Riservato su sistemi CNR previa autenticazione JEMA 2017.pdf Articolo in rivista Academic Press. 0301 4797 Journal of environmental management Journal of environmental management J. environ. manag. domenica.moscaangelucci MOSCA ANGELUCCI DOMENICA mariaconcetta.tomei TOMEI MARIA CONCETTA TA.P07.002.005 Rimozione di composti xenobiotici da acque di scarico |