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DatoValore
TitleREMEDIATION OF PCE-CONTAMINATED GROUNDWATER FROM AN INDUSTRIAL SITE IN SOUTHERN ITALY: A LABORATORY-SCALE STUDY
AbstractBatch reactors and microcosms were used to evaluate groundwater bioremediation potential of tetrachloroethene (PCE) in the presence of additional pollutants present at a site located in the Apulia Region (SE Italy). Reductive dechlorination of PCE was studied under anaerobic conditions by comparing the effectiveness of three inocula: (a) soil sampled at the contaminated site, (b) anaerobic sludge from a municipal wastewater plant, and (c) an enriched dehalogenating culture containing Dehalococcoides species. In order to enhance dehalogenation, reactors inoculated with sludge were also amended with selected electron donors. Aerobic reactors were also established to study oxidative degradation of vinyl chloride (VC), that may accumulate after incomplete dechlorination of PCE. Results showed that consortia derived from anaerobic sludge and amended with electron donors quantitatively and incompletely degraded PCE to cis-dichloroethylene, whereas in reactors augmented with a dehalogenating culture complete dechlorination of PCE occurred even in the presence of additional toxic contaminants. The presence of Dehalococcoides spp. in the dehalogenating culture and its absence in reactors inoculated with anaerobic sludge was confirmed using FISH community analyses. In all cases, prolonged incubation periods were necessary for dechlorination. On the other hand, oxidative degradation of VC in aerobic reactors occurred after short lag times.
SourceProcess biochemistry (1991) 42 (11), pp. 1498–1505
KeywordsBioremediation; Bioaugmentation; Tetrachloroethylene (PCE)DechlorinationMicrocosmsFluorescence in situ hybridization (FISH)
JournalProcess biochemistry (1991)
EditorElsevier Applied Science, Barking, Regno Unito
Year2007
TypeArticolo in rivista
DOI10.1016/j.procbio.2007.07.017
AuthorsVOLPE A., DEL MORO G., ROSSETTI S., TANDOI V., LOPEZ A.
Text42154 2007 10.1016/j.procbio.2007.07.017 ISI Web of Science WOS 000251016700004 Bioremediation; Bioaugmentation; Tetrachloroethylene PCE Dechlorination Microcosms Fluorescence in situ hybridization FISH REMEDIATION OF PCE CONTAMINATED GROUNDWATER FROM AN INDUSTRIAL SITE IN SOUTHERN ITALY A LABORATORY SCALE STUDY VOLPE A., DEL MORO G., ROSSETTI S., TANDOI V., LOPEZ A. VOLPE A. Consiglio Nazionale delle Ricerche, Istituto di Ricerca Sulle Acque, Sezione di Bari, Via Francesco De Blasio, 5, 70123 Bari, Italy DEL MORO G. Consiglio Nazionale delle Ricerche, Istituto di Ricerca Sulle Acque, Sezione di Bari, Via Francesco De Blasio, 5, 70123 Bari, Italy ROSSETTI S. Consiglio Nazionale delle Ricerche, Istituto di Ricerca Sulle Acque, via Reno 1, 00198 Roma, Italy TANDOI V. Consiglio Nazionale delle Ricerche, Istituto di Ricerca Sulle Acque, via Reno 1, 00198 Roma, Italy LOPEZ A. Consiglio Nazionale delle Ricerche, Istituto di Ricerca Sulle Acque, Sezione di Bari, Via Francesco De Blasio, 5, 70123 Bari, Italy Batch reactors and microcosms were used to evaluate groundwater bioremediation potential of tetrachloroethene PCE in the presence of additional pollutants present at a site located in the Apulia Region SE Italy . Reductive dechlorination of PCE was studied under anaerobic conditions by comparing the effectiveness of three inocula a soil sampled at the contaminated site, b anaerobic sludge from a municipal wastewater plant, and c an enriched dehalogenating culture containing Dehalococcoides species. In order to enhance dehalogenation, reactors inoculated with sludge were also amended with selected electron donors. Aerobic reactors were also established to study oxidative degradation of vinyl chloride VC , that may accumulate after incomplete dechlorination of PCE. Results showed that consortia derived from anaerobic sludge and amended with electron donors quantitatively and incompletely degraded PCE to cis dichloroethylene, whereas in reactors augmented with a dehalogenating culture complete dechlorination of PCE occurred even in the presence of additional toxic contaminants. The presence of Dehalococcoides spp. in the dehalogenating culture and its absence in reactors inoculated with anaerobic sludge was confirmed using FISH community analyses. In all cases, prolonged incubation periods were necessary for dechlorination. On the other hand, oxidative degradation of VC in aerobic reactors occurred after short lag times. 42 Remediation of PCE contaminated groundwater from an industrial site in southern Italy A laboratory scale study PCE_bioremediation_Process_Biochemistry_2007.pdf Articolo in rivista Elsevier Applied Science 1359 5113 Process biochemistry 1991 Process biochemistry 1991 Process biochem. 1991 Process biochemistry 1991 guido.delmoro DEL MORO GUIDO simona.rossetti ROSSETTI SIMONA angela.volpe VOLPE ANGELA antonio.lopez LOPEZ ANTONIO valter.tandoi TANDOI VALTER TA.P07.014.005 Risanamento di acque di falda