Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Sulphate reduction processes in biological permeable reactive barriers: Column experimentation and modeling |
| Abstract | In this work a mathematical model for simulating biological sulphate reduction processes was developed and validated by experimental data in fixed bed columns as lab-scale representations of permeable reactive barriers (PRBs). The model takes in consideration transport and adsorption of sulphate and heavy metals, sulphate bioreduction, bioprecipitation and chemical precipitation of metals. Firstly, the effect of sorption capacity of solid phase of column filling versus the effect of active biological mechanisms on solute removal was isolated denoting the significant contribution of sorption versus bioprecipitation of heavy metals. Subsequently, the mathematical model was validated using experimental data from laboratory column experiments and a good agreement between experimental data and simulation results was obtained. Sensitivity analysis of dynamic model showed that, after steady state was reached, parameter related to biological sulphate reduction affected the model output in the most significant way. © 2011, AIDIC Servizi S.r.l. |
| Source | Chemical Engineering Transactions 24, pp. 1231–1236 |
| Keywords | sulphate reduction |
| Journal | Chemical Engineering Transactions |
| Editor | , , |
| Year | 2011 |
| Type | Articolo in rivista |
| DOI | 10.3303/CET1124206 |
| Authors | Viggi, Carolina Cruz; Pagnanelli, Francesca; Toro, Luigi |
| Text | 378952 2011 10.3303/CET1124206 Scopus 2 s2.0 79955494732 sulphate reduction Sulphate reduction processes in biological permeable reactive barriers Column experimentation and modeling Viggi, Carolina Cruz; Pagnanelli, Francesca; Toro, Luigi Universita degli Studi di Roma La Sapienza In this work a mathematical model for simulating biological sulphate reduction processes was developed and validated by experimental data in fixed bed columns as lab scale representations of permeable reactive barriers PRBs . The model takes in consideration transport and adsorption of sulphate and heavy metals, sulphate bioreduction, bioprecipitation and chemical precipitation of metals. Firstly, the effect of sorption capacity of solid phase of column filling versus the effect of active biological mechanisms on solute removal was isolated denoting the significant contribution of sorption versus bioprecipitation of heavy metals. Subsequently, the mathematical model was validated using experimental data from laboratory column experiments and a good agreement between experimental data and simulation results was obtained. Sensitivity analysis of dynamic model showed that, after steady state was reached, parameter related to biological sulphate reduction affected the model output in the most significant way. © 2011, AIDIC Servizi S.r.l. 24 Published version http //www.scopus.com/record/display.url eid=2 s2.0 79955494732 origin=inward Articolo in rivista 2283 9216 Chemical Engineering Transactions Chemical Engineering Transactions carolina.cruzviggi CRUZ VIGGI CAROLINA |