Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Assessment of biodegradation of the anionic surfactant sodium lauryl ether sulphate used in two foaming agents for mechanized tunnelling excavation. |
| Abstract | The anionic surfactant sodium lauryl ether sulphate (SLES) is the main component in most foaming agents used for mechanized tunneling excavation. The process produces huge amounts of soil debris that can have a potential impact on ecosystems. The lack of accurate information about SLES persistence in excavated soil has aroused increasing concern about how it is recycled. The objective of this study was to assess SLES biodegradability in two commercial foaming agents (P1 and P2). Microcosm experiments were performed with two different soils collected from a tunnel construction site and conditioned with P1 or P2 (85.0 or 83.0 mg kg -1 of SLES, respectively). At selected times soil samples were collected for assessing the SLES residual concentration using Pressured Liquid Extraction followed by methylene blue active substance analysis (MBAS). Simultaneously, soil microbial abundance (DAPI counts), viability (Live/Dead method), activity (dehydrogenase analysis) and phylogenetic structure (Fluorescent In Situ Hybridization) were evaluated. SLES halved faster in the silty-clay soil (6 d) than in the gravel in a clay-silty-sand matrix (8-9 days). At day 28 it was degraded in both soils. Its biodegradation was ascribed to the significant increase in Gamma-Proteobacteria. At this time, the spoil material can be considered as a by-product. |
| Source | Journal of hazardous materials (Print) 365, pp. 538–545 |
| Keywords | Soil additivesTunneling boring machineBiodegradationSite-specific approach |
| Journal | Journal of hazardous materials (Print) |
| Editor | Elsevier, New York ;, Paesi Bassi |
| Year | 2019 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.jhazmat.2018.11.002 |
| Authors | Barra Caracciolo A Ademollo N, Cardoni M, Grenni P, Pescatore T, Rauseo J, Patrolecco L |
| Text | 397020 2019 10.1016/j.jhazmat.2018.11.002 Scopus 2 s2.0 85056769310 ISI Web of Science WOS 000456761000057 Soil additives Tunneling boring machine Biodegradation Site specific approach Assessment of biodegradation of the anionic surfactant sodium lauryl ether sulphate used in two foaming agents for mechanized tunnelling excavation. Barra Caracciolo A Ademollo N, Cardoni M, Grenni P, Pescatore T, Rauseo J, Patrolecco L Barra Caracciolo A Ademollo N, Cardoni M, Grenni P, Pescatore T, Rauseo J, Patrolecco L Water Research Institute National Research Council IRSA CNR , Italy Di Giulio A Institute of Environmental Geology and Geoengineering CNR IGAG , Italy The anionic surfactant sodium lauryl ether sulphate SLES is the main component in most foaming agents used for mechanized tunneling excavation. The process produces huge amounts of soil debris that can have a potential impact on ecosystems. The lack of accurate information about SLES persistence in excavated soil has aroused increasing concern about how it is recycled. The objective of this study was to assess SLES biodegradability in two commercial foaming agents P1 and P2 . Microcosm experiments were performed with two different soils collected from a tunnel construction site and conditioned with P1 or P2 85.0 or 83.0 mg kg 1 of SLES, respectively . At selected times soil samples were collected for assessing the SLES residual concentration using Pressured Liquid Extraction followed by methylene blue active substance analysis MBAS . Simultaneously, soil microbial abundance DAPI counts , viability Live/Dead method , activity dehydrogenase analysis and phylogenetic structure Fluorescent In Situ Hybridization were evaluated. SLES halved faster in the silty clay soil 6 d than in the gravel in a clay silty sand matrix 8 9 days . At day 28 it was degraded in both soils. Its biodegradation was ascribed to the significant increase in Gamma Proteobacteria. At this time, the spoil material can be considered as a by product. 365 Published version https //www.scopus.com/record/display.uri eid=2 s2.0 85056769310 origin=resultslist sort=plf f src=s st1= st2= sid=bb70de80cf677c641afe82f0d510b865 sot=b sdt=b sl=162 s=TITLE ABS KEY%28Assessment of biodegradation of the anionic surfactant sodium lauryl ether sulphate used in two foaming agents for mechanized tunnelling excavation%29 relpos=0 citeCnt=18 searchTerm= 01/11/2018 Assessment of biodegradation of the anionic surfactant sodium lauryl ether sulphate Paper pubblicato JHazMaterialSLES_Biodegradation main.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 jasmin.rauseo RAUSEO JASMIN CARDONI MARTINA anitadigiulio DI GIULIO ANITA tanitapescatore PESCATORE TANITA luisa.patrolecco PATROLECCO LUISA anna.barracaracciolo BARRA CARACCIOLO ANNA paola.grenni GRENNI PAOLA nicoletta.ademollo ADEMOLLO NICOLETTA |