Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Characteristics and environmental fate of the anionic surfactant sodium lauryl ether sulphate (SLES) used as the main component in foaming agents for mechanized tunnelling |
| Abstract | The anionic surfactant sodium lauryl ether sulphate (SLES) is the main component of most commercial products used for soil conditioning in the excavation industry, in particular as lubricants for mechanized tunnelling. Its use during the excavation processes can result in either the subsequent possible re-use of the huge amount of soil debris as by-products (e.g. land covering) or its discharge as waste. Currently, there are neither SLES soil threshold limits in European legislation, nor comprehensive studies on the environmental risk for soil ecosystems in these exposure scenarios. In this context, the present paper reviews the available data on the intrinsic characteristics of persistence and the ecotoxicological effects of the anionic surfactant SLES. Although SLES is generally reported to be biodegradable in standard tests, with degradation rates between 7 h and 30 days, depending on the initial conditions, data on its biodegradation in environmental studies are quite scarce. Consequently, assessing SLES biodegradation rates in field conditions is crucial for evaluating if in residual concentrations (typically in the range 40-500 mg/kg in excavated soils) it can or not be a potential hazard for terrestrial and water organisms. Laboratory ecotoxicological tests pointed out detrimental effects of SLES for aquatic organisms, while data on the terrestrial species are rather poor so far and further studies at the expected environmental concentrations are necessary. Finally, the review reports the main analytical methods available for detecting anionic surfactants in solid matrices and the future research needed to improve knowledge on the possible environmental risks posed by the use of SLES in foaming agents for mechanized tunnelling. |
| Source | Environmental pollution (1987) 226, pp. 94–103 |
| Keywords | sodium laureth sulphatefoaming agentsmechanized excavationbiodegradationecotoxicity |
| Journal | Environmental pollution (1987) |
| Editor | Elsevier Applied Science Publishers, Barking, Regno Unito |
| Year | 2017 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.envpol.2017.04.008 |
| Authors | Barra Caracciolo A., Cardoni M., Pescatore T., Patrolecco L. |
| Text | 376218 2017 10.1016/j.envpol.2017.04.008 Scopus 2 s2.0 85017454310 ISI Web of Science WOS WOS 000405881800011 sodium laureth sulphate foaming agents mechanized excavation biodegradation ecotoxicity Characteristics and environmental fate of the anionic surfactant sodium lauryl ether sulphate SLES used as the main component in foaming agents for mechanized tunnelling Barra Caracciolo A., Cardoni M., Pescatore T., Patrolecco L. Water Research Institute, National Research Council IRSA CNR , Via Salaria Km 29.300, Monterotondo Scalo, Rome, 00015 The anionic surfactant sodium lauryl ether sulphate SLES is the main component of most commercial products used for soil conditioning in the excavation industry, in particular as lubricants for mechanized tunnelling. Its use during the excavation processes can result in either the subsequent possible re use of the huge amount of soil debris as by products e.g. land covering or its discharge as waste. Currently, there are neither SLES soil threshold limits in European legislation, nor comprehensive studies on the environmental risk for soil ecosystems in these exposure scenarios. In this context, the present paper reviews the available data on the intrinsic characteristics of persistence and the ecotoxicological effects of the anionic surfactant SLES. Although SLES is generally reported to be biodegradable in standard tests, with degradation rates between 7 h and 30 days, depending on the initial conditions, data on its biodegradation in environmental studies are quite scarce. Consequently, assessing SLES biodegradation rates in field conditions is crucial for evaluating if in residual concentrations typically in the range 40 500 mg/kg in excavated soils it can or not be a potential hazard for terrestrial and water organisms. Laboratory ecotoxicological tests pointed out detrimental effects of SLES for aquatic organisms, while data on the terrestrial species are rather poor so far and further studies at the expected environmental concentrations are necessary. Finally, the review reports the main analytical methods available for detecting anionic surfactants in solid matrices and the future research needed to improve knowledge on the possible environmental risks posed by the use of SLES in foaming agents for mechanized tunnelling. 226 Published version http //www.scopus.com/record/display.url eid=2 s2.0 85017454310 origin=inward Paper EnvPoll_SLES_2017.pdf Articolo in rivista Elsevier Applied Science Publishers 0269 7491 Environmental pollution 1987 Environmental pollution 1987 Environ. pollut. 1987 Environmental pollution 1987 CARDONI MARTINA luisa.patrolecco PATROLECCO LUISA anna.barracaracciolo BARRA CARACCIOLO ANNA TA.P04.005.011 Vulnerabilita degli ecosistemi delle acque sotterranee e attenuazione naturale degli inquinanti nel suolo e nel sottosuolo |