Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Co-treatment of landfill leachate with urban wastewater by chemical, physical and biological processes: Fenton oxidation preserves autochthonous bacterial community in the activated sludge process |
| Abstract | The impact of Fenton oxidation (FO) and Air stripping (AS) pre-treatments on the bacterial community of a biological activated sludge (B-AS) process for the co-treatment of mature landfill leachate (MLL) and urban wastewater (UWW) was assessed. In this work high-throughput sequencing was used to identify changes in the composition of the bacterial communities when exposed to different landfill leachate's pre-treatments. The combination of FO and AS to increase biodegradability (BOD5/COD) and reduce ammonia concentration (NH3) respectively, allowed to successfully operate the B-AS and effectively treat MLL. In particular, BOD5/COD resulted to be the key factor for bacterial community shifting. The microbiological community of the B-AS, mainly composed by the phylum Bacteroidota (Saprospiraceae, PHOS-HE51, Chitinophagaceae) after FO pre-treatment, shifted to Pseudomonadota (Caulobacteraceae and Hyphomicrobiaceae) when FO was not used. At the same time a drastic reduction in BOD5 removal was observed (90%-58%). On the other hand, high NH3 con-centration affected the abundance of the family Saprospiraceae, known to play a key role in the degradation of complex organic compounds in B-AS. The results obtained suggest that a suitable combination of pre-treatments can reduce the negative effect of MLL on the B-AS process, reducing the pressure on autochthonous bacteria and therefore the acclimatization time of the biological process. |
| Source | Chemosphere 313 |
| Keywords | Air strippingBacterial community shiftingFenton oxidationHierarchical cluster analysisIndustrial wastewaterWastewater biodegradability |
| Journal | Chemosphere |
| Editor | Elsevier, Oxford, Regno Unito |
| Year | 2022 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.chemosphere.2022.137578 |
| Authors | De Carluccio, Marco; Sabatino, Raffaella; Eckert, Ester M.; Cesare, Andrea Di; Corno, Gianluca; Rizzo, Luigi |
| Text | 477478 2022 10.1016/j.chemosphere.2022.137578 ISI Web of Science WOS 000904122200004 Air stripping Bacterial community shifting Fenton oxidation Hierarchical cluster analysis Industrial wastewater Wastewater biodegradability Co treatment of landfill leachate with urban wastewater by chemical, physical and biological processes Fenton oxidation preserves autochthonous bacterial community in the activated sludge process De Carluccio, Marco; Sabatino, Raffaella; Eckert, Ester M.; Cesare, Andrea Di; Corno, Gianluca; Rizzo, Luigi Univ Salerno; Water Res Inst IRSA The impact of Fenton oxidation FO and Air stripping AS pre treatments on the bacterial community of a biological activated sludge B AS process for the co treatment of mature landfill leachate MLL and urban wastewater UWW was assessed. In this work high throughput sequencing was used to identify changes in the composition of the bacterial communities when exposed to different landfill leachate s pre treatments. The combination of FO and AS to increase biodegradability BOD5/COD and reduce ammonia concentration NH3 respectively, allowed to successfully operate the B AS and effectively treat MLL. In particular, BOD5/COD resulted to be the key factor for bacterial community shifting. The microbiological community of the B AS, mainly composed by the phylum Bacteroidota Saprospiraceae, PHOS HE51, Chitinophagaceae after FO pre treatment, shifted to Pseudomonadota Caulobacteraceae and Hyphomicrobiaceae when FO was not used. At the same time a drastic reduction in BOD5 removal was observed 90% 58% . On the other hand, high NH3 con centration affected the abundance of the family Saprospiraceae, known to play a key role in the degradation of complex organic compounds in B AS. The results obtained suggest that a suitable combination of pre treatments can reduce the negative effect of MLL on the B AS process, reducing the pressure on autochthonous bacteria and therefore the acclimatization time of the biological process. 313 Published version Articolo in rivista Elsevier 0045 6535 Chemosphere Chemosphere Chemosphere Chemosphere. Chemosphere. Environmental chemistry, Chemosphere. Persistent organic pollutants and dioxins, Chemosphere. Environmental toxicology and risk assessment, Chemosphere. Science for Environmental toxicology, SABATINO RAFFAELLA gianluca.corno CORNO GIANLUCA andrea.dicesare DI CESARE ANDREA estermaria.eckert ECKERT ESTER MARIA |