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 Hytrel (TM) which is characterized by higher partition capability in comparison to the immiscible liquid solvent (2-undecanone) and to the polymer Tone (TM) 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

Two-phase reactors applied to the removal of substituted phenols: comparison between liquid-liquid and liquid-solid systems / Tomei, MARIA CONCETTA; Annesini, Maria Cristina; Piemonte, Vincenzo; G. p., Prpich; A. j., Daugulis. - In: WATER SCIENCE AND TECHNOLOGY. - ISSN 0273-1223. - 62:4(2010), pp. 776-782. [10.2166/wst.2010.922]

Two-phase reactors applied to the removal of substituted phenols: comparison between liquid-liquid and liquid-solid systems

TOMEI, MARIA CONCETTA;ANNESINI, Maria Cristina;PIEMONTE, Vincenzo;
2010

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 Hytrel (TM) which is characterized by higher partition capability in comparison to the immiscible liquid solvent (2-undecanone) and to the polymer Tone (TM) 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
2010
organic solvents; partitioning bioreactors; substituted phenols; polymers; bioregeneration
01 Pubblicazione su rivista::01a Articolo in rivista
Two-phase reactors applied to the removal of substituted phenols: comparison between liquid-liquid and liquid-solid systems / Tomei, MARIA CONCETTA; Annesini, Maria Cristina; Piemonte, Vincenzo; G. p., Prpich; A. j., Daugulis. - In: WATER SCIENCE AND TECHNOLOGY. - ISSN 0273-1223. - 62:4(2010), pp. 776-782. [10.2166/wst.2010.922]
File allegati a questo prodotto
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/363741
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? 1
  • Scopus 15
  • ???jsp.display-item.citation.isi??? 14
social impact