Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | The bioelectric well: A novel approach for in situ treatment of hydrocarbon-contaminated groundwater |
| Abstract | Groundwater contamination by petroleum hydrocarbons (PHs) is a widespread problem which poses serious environmental and health concerns. Recently, microbial electrochemical technologies (MET) have attracted considerable attention for remediation applications, having the potential to overcome some of the limiting factors of conventional in situ bioremediation systems. So far, field-scale application of MET has been largely hindered by the limited availability of scalable system configurations. Here, we describe the 'bioelectric well' a bioelectrochemical reactor configuration, which can be installed directly within groundwater wells and can be applied for in situ treatment of organic contaminants, such as PHs. A laboratory-scale prototype of the bioelectric well has been set up and operated in continuous-flow regime with phenol as the model contaminant. The best performance was obtained when the system was inoculated with refinery sludge and the anode potentiostatically controlled at +0.2 V versus SHE. Under this condition, the influent phenol (25 mg l-1) was nearly completely (99.5 ± 0.4%) removed, with an average degradation rate of 59 ± 3 mg l-1 d and a coulombic efficiency of 104 ± 4%. Microbial community analysis revealed a remarkable enrichment of Geobacter species on the surface of the graphite anode, clearly pointing to a direct involvement of this electro-active bacterium in the current-generating and phenol-oxidizing process. |
| Source | Microbial biotechnology (Qualify. Online), pp. 112–118 |
| Keywords | Bioremediation |
| Journal | Microbial biotechnology (Qualify. Online) |
| Editor | Blackwell, Oxford, Regno Unito |
| Year | 2018 |
| Type | Articolo in rivista |
| DOI | 10.1111/1751-7915.12760 |
| Authors | Palma, Enza; Daghio, Matteo; Franzetti, Andrea; Petrangeli Papini, Marco; Aulenta, Federico |
| Text | 378908 2018 10.1111/1751 7915.12760 Scopus 2 s2.0 85022332490 Bioremediation The bioelectric well A novel approach for in situ treatment of hydrocarbon contaminated groundwater Palma, Enza; Daghio, Matteo; Franzetti, Andrea; Petrangeli Papini, Marco; Aulenta, Federico Istituto di Ricerca Sulle Acque, Consiglio Nazionale di Ricerche Groundwater contamination by petroleum hydrocarbons PHs is a widespread problem which poses serious environmental and health concerns. Recently, microbial electrochemical technologies MET have attracted considerable attention for remediation applications, having the potential to overcome some of the limiting factors of conventional in situ bioremediation systems. So far, field scale application of MET has been largely hindered by the limited availability of scalable system configurations. Here, we describe the bioelectric well a bioelectrochemical reactor configuration, which can be installed directly within groundwater wells and can be applied for in situ treatment of organic contaminants, such as PHs. A laboratory scale prototype of the bioelectric well has been set up and operated in continuous flow regime with phenol as the model contaminant. The best performance was obtained when the system was inoculated with refinery sludge and the anode potentiostatically controlled at 0.2 V versus SHE. Under this condition, the influent phenol 25 mg l 1 was nearly completely 99.5 ± 0.4% removed, with an average degradation rate of 59 ± 3 mg l 1 d and a coulombic efficiency of 104 ± 4%. Microbial community analysis revealed a remarkable enrichment of Geobacter species on the surface of the graphite anode, clearly pointing to a direct involvement of this electro active bacterium in the current generating and phenol oxidizing process. Published version http //www.scopus.com/record/display.url eid=2 s2.0 85022332490 origin=inward Articolo in rivista Blackwell 1751 7915 Microbial biotechnology Qualify. Online Microbial biotechnology Qualify. Online Microb. biotechnol. Qualify. Online Microbial biotechnology Online . Qualify. Online PALMA ENZA federico.aulenta AULENTA FEDERICO |