Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | TWO-PHASE REACTORS APPLIED TO THE REMOVAL OF SUBSTITUTED PHENOLS: COMPARISON BETWEEN LIQUID-LIQUID AND LIQUID-SOLID SYSTEMS |
| Abstract | In this paper, a comparison is provided between liquid-liquid and liquid-solid partitioning systems applied to the removal of high concentrations of 4-nitrophenol. The target compound is a typical representative of substituted phenols found in many industrial effluents while the biomass was a mixed culture operating as a conventional Sequencing Batch Reactor and acclimatized to 4-nitrophenol as the sole carbon source. Both two-phase systems showed enhanced performance relative to the conventional single phase bioreactor and may be suitable for industrial application. The best results were obtained with the polymer HytrelY which is characterized by higher partition capability in comparison to the immiscible liquid solvent (2-undecanone) and to the polymer ToneY. A model of the two systems was formulated and applied to evaluate the relative magnitudes of the reaction, mass transfer and diffusion characteristic times. Kinetic parameters for the Haldane equation, diffusivity and mass transfer coefficients have been evaluated by data fitting of batch tests for liquid-liquid and liquid-solid two phase systems. Finally, preliminary results showed the feasibility of polymer regeneration to facilitate polymer reuse by an extended contact time with the biomass. |
| Source | Water science and technology 64, pp. 776–782 |
| Keywords | bioregenerationorganic solventspartitioning bioreactorspolymers |
| Journal | Water science and technology |
| Editor | IWA Publishing, London, |
| Year | 2010 |
| Type | Articolo in rivista |
| DOI | 10.2166/wst.2010.922 |
| Authors | TOMEI M.C. (1); ANNESINI M.C. (2); PIEMONTE V. (2); PRPICH G.P. (3); DAUGULIS A.J. (3) |
| Text | 42392 2010 10.2166/wst.2010.922 ISI Web of Science WOS 000256187500004 bioregeneration organic solvents partitioning bioreactors polymers TWO PHASE REACTORS APPLIED TO THE REMOVAL OF SUBSTITUTED PHENOLS COMPARISON BETWEEN LIQUID LIQUID AND LIQUID SOLID SYSTEMS TOMEI M.C. 1 ; ANNESINI M.C. 2 ; PIEMONTE V. 2 ; PRPICH G.P. 3 ; DAUGULIS A.J. 3 1 Water Research Institute, C.N.R., Via Salaria km 29.300, 00016 Monterotondo Rome , Italy; 2 Department of Chemical Engineering Materials Environment, Sapienza University of Rome, Via Eudossiana 18, 00184 Rome, Italy; 3 Department of Chemical Engineering, Queen s University, Kingston Ontario K7L 3N6, Canada In this paper, a comparison is provided between liquid liquid and liquid solid partitioning systems applied to the removal of high concentrations of 4 nitrophenol. The target compound is a typical representative of substituted phenols found in many industrial effluents while the biomass was a mixed culture operating as a conventional Sequencing Batch Reactor and acclimatized to 4 nitrophenol as the sole carbon source. Both two phase systems showed enhanced performance relative to the conventional single phase bioreactor and may be suitable for industrial application. The best results were obtained with the polymer HytrelY which is characterized by higher partition capability in comparison to the immiscible liquid solvent 2 undecanone and to the polymer ToneY. A model of the two systems was formulated and applied to evaluate the relative magnitudes of the reaction, mass transfer and diffusion characteristic times. Kinetic parameters for the Haldane equation, diffusivity and mass transfer coefficients have been evaluated by data fitting of batch tests for liquid liquid and liquid solid two phase systems. Finally, preliminary results showed the feasibility of polymer regeneration to facilitate polymer reuse by an extended contact time with the biomass. 64 http //www.iwaponline.com/wst/06204/wst062040776.htm Articolo pubblicato su rivista ISI WST_10_922.pdf Articolo in rivista IWA Publishing 0273 1223 Water science and technology Water science and technology Water science and technology. Water sci. technol. mariaconcetta.tomei TOMEI MARIA CONCETTA TA.P07.001.001 Sviluppo di tecnologie depurative a regime non stazionario |