Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Anaerobic arsenite oxidation with an electrode serving as the sole electron acceptor: A novel approach to the bioremediation of arsenic-polluted groundwater |
| Abstract | Arsenic contamination of soil and groundwater is a serious problem worldwide. Here we show that anaerobic oxidation of As(III) to As(V), a form which is more extensively and stably adsorbed onto metal-oxides, can be achieved by using a polarized (+497 mV vs. SHE) graphite anode serving as terminal electron acceptor in the microbial metabolism. The characterization of the microbial populations at the electrode, by using in situ detection methods, revealed the predominance of gammaproteobacteria. In principle, the proposed bioelectrochemical oxidation process would make it possible to provide As(III)-oxidizing microorganisms with a virtually unlimited, low-cost and low-maintenance electron acceptor as well as with a physical support for microbial attachment. (C) 2014 Elsevier B.V. All rights reserved. |
| Source | Journal of hazardous materials (Print) 283, pp. 617–622 |
| Keywords | Arsenite oxidationArsenic bioremediationBioelectrochemical systems |
| Journal | Journal of hazardous materials (Print) |
| Editor | Elsevier, New York ;, Paesi Bassi |
| Year | 2015 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.jhazmat.2014.10.014 |
| Authors | Pous, Narcis; Casentini, Barbara; Rossetti, Simona; Fazi, Stefano; Puig, Sebastia; Aulenta, Federico |
| Text | 300113 2015 10.1016/j.jhazmat.2014.10.014 ISI Web of Science WOS 000347494200072 Scopus 2 s2.0 84939508623 Arsenite oxidation Arsenic bioremediation Bioelectrochemical systems Anaerobic arsenite oxidation with an electrode serving as the sole electron acceptor A novel approach to the bioremediation of arsenic polluted groundwater Pous, Narcis; Casentini, Barbara; Rossetti, Simona; Fazi, Stefano; Puig, Sebastia; Aulenta, Federico Universitat de Girona; Water Res Inst IRSA CNR Arsenic contamination of soil and groundwater is a serious problem worldwide. Here we show that anaerobic oxidation of As III to As V , a form which is more extensively and stably adsorbed onto metal oxides, can be achieved by using a polarized 497 mV vs. SHE graphite anode serving as terminal electron acceptor in the microbial metabolism. The characterization of the microbial populations at the electrode, by using in situ detection methods, revealed the predominance of gammaproteobacteria. In principle, the proposed bioelectrochemical oxidation process would make it possible to provide As III oxidizing microorganisms with a virtually unlimited, low cost and low maintenance electron acceptor as well as with a physical support for microbial attachment. C 2014 Elsevier B.V. All rights reserved. 283 Published version Anaerobic arsenite oxidation with an electrode serving as the sole electron acceptor Pous_JHM_2015.pdf Articolo in rivista Elsevier 0304 3894 Journal of hazardous materials Print Journal of hazardous materials Print J. hazard. mater. Print Journal of hazardous materials. Print simona.rossetti ROSSETTI SIMONA stefano.fazi FAZI STEFANO barbara.casentini CASENTINI BARBARA federico.aulenta AULENTA FEDERICO |