| Title | A bioassay battery for the ecotoxicity assessment of soils conditioned with two different commercial foaming products |
| Abstract | Alkylethoxysulfate (AES) surfactants are the main component of most commercial products used for soil conditioning in the excavation industry, in particular as lubricants for mechanized tunnelling. Huge amounts of soil debris are produced during the excavation process and their possible re-use as by-products (e.g. land covering) or discharge as waste is a critical question in civil engineering. There can be an environmental impact from the potential ecotoxicity of the residual chemical mixture occurring in the foam-conditioned excavated soil. Chemical analyses are not able on their own to assess the potential hazards for the ecosystem ascribable to inadequate management of this kind of conditioned soil. Ecotoxicological tests, on the other hand, provide useful overall information about the potential effects of conditioned debris on soil and aquatic biota, including synergic ones, whether or not there is a detailed knowledge of the chemical composition of all the components of the commercial foaming products. In this context, the objective of this work was to evaluate the overall ecotoxicity of excavated soil conditioned with two common foaming products containing sodium lauryl ether sulphate (SLES) as the main component, in order to verify their possible re-use as by-products. For this purpose, two soils with different geopedological characteristics were conditioned with the commercial foaming agents at the concentrations utilised for mechanized tunnelling and then used for microcosm laboratory experiments. Soil sub-samples were collected at different times (0, 7, 14, 28 days) of incubation and soil elutriates were produced to assess the effects of the foaming agents on five test species (Pseudokirchneriella subcapitata, Daphnia magna, Danio rerio, Vibrio fischeri and Lepidium sativum). The results of the tests were then compared with SLES residual concentrations in the elutriates, determined with the MBAS (methylene blue active substances) spectrophotometric method. Finally, the data were combined in a battery index, which proved effective at evaluating the overall ecotoxicity in a real-life situation of two different excavated soils conditioned with the two products analysed. |
| Source | Ecotoxicology and environmental safety 148, pp. 1067–1077 |
| Keywords | Alkylethoxysulfate (AES)Sodium lauryl ether sulphate (SLES)Foaming agentsConditioned soilBioassay batteryEcotoxicity index |
| Journal | Ecotoxicology and environmental safety |
| Editor | Elsevier [etc.], Amsterdam, Netherlands [etc.], Paesi Bassi |
| Year | 2018 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.ecoenv.2017.11.071 |
| Authors | Grenni P. (a); Barra Caracciolo A. (a); Patrolecco L. (a); Ademollo N. (a); Rauseo J. (a,b); Saccà M.L. (a); Mingazzini M. (c); Palumbo M. (c); Galli E. (d); Muzzini V.G. (d); Polcaro C.M. (e); Donati E. (e); Lacchetti I. (f); Di Giulio A. (g); Gucci P.M.B. (f); Beccaloni E. (f); Mininni G. (a) |
| Text | 380772 2018 10.1016/j.ecoenv.2017.11.071 Scopus 2 s2.0 85037706608 ISI Web of Science WOS WOS 000429892700122 Alkylethoxysulfate AES Sodium lauryl ether sulphate SLES Foaming agents Conditioned soil Bioassay battery Ecotoxicity index A bioassay battery for the ecotoxicity assessment of soils conditioned with two different commercial foaming products Grenni P. a ; Barra Caracciolo A. a ; Patrolecco L. a ; Ademollo N. a ; Rauseo J. a,b ; Sacca M.L. a ; Mingazzini M. c ; Palumbo M. c ; Galli E. d ; Muzzini V.G. d ; Polcaro C.M. e ; Donati E. e ; Lacchetti I. f ; Di Giulio A. g ; Gucci P.M.B. f ; Beccaloni E. f ; Mininni G. a CNR IRSA, Area di Montelibretti, Rome, Italy a ; Environmental Biology Dept., Sapienza University of Rome, Italy b ; CNR IRSA, Brugherio, MB, Italy c ; CNR IBAF, Area di Montelibretti, Rome, Italy d ; CNR IMC, Area di Montelibretti, Rome, Italy e ; Italian Institute of Health ISS Environment and Health Department, Rome, Italy f ; CNR IGAG, Area di Montelibretti, Rome, Italy g Alkylethoxysulfate AES surfactants are the main component of most commercial products used for soil conditioning in the excavation industry, in particular as lubricants for mechanized tunnelling. Huge amounts of soil debris are produced during the excavation process and their possible re use as by products e.g. land covering or discharge as waste is a critical question in civil engineering. There can be an environmental impact from the potential ecotoxicity of the residual chemical mixture occurring in the foam conditioned excavated soil. Chemical analyses are not able on their own to assess the potential hazards for the ecosystem ascribable to inadequate management of this kind of conditioned soil. Ecotoxicological tests, on the other hand, provide useful overall information about the potential effects of conditioned debris on soil and aquatic biota, including synergic ones, whether or not there is a detailed knowledge of the chemical composition of all the components of the commercial foaming products. In this context, the objective of this work was to evaluate the overall ecotoxicity of excavated soil conditioned with two common foaming products containing sodium lauryl ether sulphate SLES as the main component, in order to verify their possible re use as by products. For this purpose, two soils with different geopedological characteristics were conditioned with the commercial foaming agents at the concentrations utilised for mechanized tunnelling and then used for microcosm laboratory experiments. Soil sub samples were collected at different times 0, 7, 14, 28 days of incubation and soil elutriates were produced to assess the effects of the foaming agents on five test species Pseudokirchneriella subcapitata, Daphnia magna, Danio rerio, Vibrio fischeri and Lepidium sativum . The results of the tests were then compared with SLES residual concentrations in the elutriates, determined with the MBAS methylene blue active substances spectrophotometric method. Finally, the data were combined in a battery index, which proved effective at evaluating the overall ecotoxicity in a real life situation of two different excavated soils conditioned with the two products analysed. 148 Published version https //www.sciencedirect.com/science/article/abs/pii/S0147651317308242 A bioassay battery for the ecotoxicity assessment of soils conditioned with two different commercial foaming products published version A bioassay battery.pdf Articolo in rivista Elsevier etc. 0147 6513 Ecotoxicology and environmental safety Ecotoxicology and environmental safety Ecotoxicol. environ. saf. Ecotoxicology and environmental safety. Environmental research. Section B EES mariateresa.palumbo PALUMBO MARIA TERESA jasmin.rauseo RAUSEO JASMIN marina.mingazzini MINGAZZINI MARINA giuseppe.mininni MININNI GIUSEPPE luisa.patrolecco PATROLECCO LUISA emanuela.galli GALLI EMANUELA anna.barracaracciolo BARRA CARACCIOLO ANNA paola.grenni GRENNI PAOLA nicoletta.ademollo ADEMOLLO NICOLETTA enrica.donati DONATI ENRICA chiara.polcaro POLCARO CHIARA MARCELLA valeriogiorgio.muzzini MUZZINI VALERIO GIORGIO TA.P04.005.011 Vulnerabilita degli ecosistemi delle acque sotterranee e attenuazione naturale degli inquinanti nel suolo e nel sottosuolo |
