Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Acid mine drainage attenuation by inhibition of pyrite bioleaching using limestone and olive pomace |
| Abstract | The control and inhibition of pyrite bioleaching involved in the generation of acid mine drainage was studied. Inhibition of pyrite bioleaching was performed by varying the pyrite concentration in the medium (substrate inhibition) and/or by addition of limestone (inhibition by pH increase) and olive pomace (inhibition by organic compounds). Inhibition tests of pyrite bioleaching were performed according to a full factorial design with three factors (pyrite, limestone and olive pomace) taken at two levels. Preliminary pyrite bioleaching tests showed the ability of the available inoculum to oxidise the mineral. Subsequently, experimental data for total soluble iron denoted strong inhibition under all the different operating conditions of the factorial design, except when larger pyrite concentrations were used. In particular, inhibition by limestone was due to the increase in pH which negatively affects microorganisms, while inhibition by olive pomace may be related to the antioxidant properties of polyphenols. Interactions among operating conditions were specifically assessed by analysis of variance. Only limestone and/or pomace addition resulted in a significant (95%) diminution of iron extraction. © 2012 Taylor and Francis Group, LLC. |
| Source | Chemistry in ecology (Print) 28 (3), pp. 293–303 |
| Keywords | acid mine drainagebioleachingiron oxidising bacterialimestoneolive pomacepyrite |
| Journal | Chemistry in ecology (Print) |
| Editor | Gordon and Breach Science Publishers., New York, Stati Uniti d'America |
| Year | 2012 |
| Type | Articolo in rivista |
| DOI | 10.1080/02757540.2011.651128 |
| Authors | Pagnanelli, F.; Viggi, C. Cruz; Toro, L. |
| Text | 378950 2012 10.1080/02757540.2011.651128 Scopus 2 s2.0 84860159358 acid mine drainage bioleaching iron oxidising bacteria limestone olive pomace pyrite Acid mine drainage attenuation by inhibition of pyrite bioleaching using limestone and olive pomace Pagnanelli, F.; Viggi, C. Cruz; Toro, L. Universita degli Studi di Roma La Sapienza The control and inhibition of pyrite bioleaching involved in the generation of acid mine drainage was studied. Inhibition of pyrite bioleaching was performed by varying the pyrite concentration in the medium substrate inhibition and/or by addition of limestone inhibition by pH increase and olive pomace inhibition by organic compounds . Inhibition tests of pyrite bioleaching were performed according to a full factorial design with three factors pyrite, limestone and olive pomace taken at two levels. Preliminary pyrite bioleaching tests showed the ability of the available inoculum to oxidise the mineral. Subsequently, experimental data for total soluble iron denoted strong inhibition under all the different operating conditions of the factorial design, except when larger pyrite concentrations were used. In particular, inhibition by limestone was due to the increase in pH which negatively affects microorganisms, while inhibition by olive pomace may be related to the antioxidant properties of polyphenols. Interactions among operating conditions were specifically assessed by analysis of variance. Only limestone and/or pomace addition resulted in a significant 95% diminution of iron extraction. © 2012 Taylor and Francis Group, LLC. 28 Published version http //www.scopus.com/record/display.url eid=2 s2.0 84860159358 origin=inward Articolo in rivista Gordon and Breach Science Publishers. 0275 7540 Chemistry in ecology Print Chemistry in ecology Print Chem. ecol. Print Chemistry in ecology. Print Chemistry and ecology Print carolina.cruzviggi CRUZ VIGGI CAROLINA |