| Title | Environmental Fate and Effects of Foaming Agents Containing Sodium Lauryl Ether Sulphate in Soil Debris from Mechanized Tunneling |
| Abstract | A wide use of foaming agents as lubricants is required in mechanized tunneling. Their main
component, the anionic surfactant sodium lauryl ether sulphate (SLES), can remain in residual
concentrations in soil debris, influencing their potential reuse as by-product. This study aimed at
evaluating the environmental fate and eects of a foaming product used for conditioning soils collected
from real excavation sites, in the presence/absence of an anti-clogging polymer, both containing SLES.
Soil microcosm experiments were set-up and incubated for 28 days. Over time, soils and their water
extracts (elutriates) were collected to perform both ecotoxicological tests (Vibrio fischeri, Lepidium
sativum, Eisenia foetida, Hetereocypris incongruens, Danio rerio) and SLES analysis. The results showed
that, just after conditioning, SLES did not exert any hazardous eect on the organisms tested except
for the bacterium V. fischeri, which was the most sensitive to its presence. However, from day seven
the toxic eect on the bacterium was never observed thanks to the SLES decrease in the elutriates
(<2 mg/L). SLES degraded in soils (half-lives from 9 to 25 days) with higher disappearance rates
corresponding to higher values of microbial abundances. This study highlights the importance of
site-specific studies for assessing the environmental reuse of spoil materials. |
| Source | Water (Basel) 12, pp. 2074 |
| Keywords | TBM-EPB excavation; SLES; spoil material; ecotoxicity |
| Journal | Water (Basel) |
| Editor | Molecular Diversity Preservation International, Basel, |
| Year | 2020 |
| Type | Articolo in rivista |
| DOI | 10.3390/w12082074 |
| Authors | Luisa Patrolecco, Tanita Pescatore , Livia Mariani , Ludovica Rolando , Paola Grenni , Antonio Finizio, Francesca Spataro, Jasmin Rauseo, Nicoletta Ademollo, Valerio Giorgio Muzzini, Enrica Donati, Ines Lacchetti, Sara Padulosi, Anna Barra Caracciolo |
| Text | 425860 2020 10.3390/w12082074 TBM EPB excavation; SLES; spoil material; ecotoxicity Environmental Fate and Effects of Foaming Agents Containing Sodium Lauryl Ether Sulphate in Soil Debris from Mechanized Tunneling Luisa Patrolecco, Tanita Pescatore , Livia Mariani , Ludovica Rolando , Paola Grenni , Antonio Finizio, Francesca Spataro, Jasmin Rauseo, Nicoletta Ademollo, Valerio Giorgio Muzzini, Enrica Donati, Ines Lacchetti, Sara Padulosi, Anna Barra Caracciolo Institute of Polar Sciences National Research Council ISP CNR , 00010 Rome, Italy; luisa.patrolecco@cnr.it L.P. ; francesca.spataro@cnr.it F.S. ; jasmin.rauseo@cnr.it J.R. ; nicoletta.ademollo@cnr.it N.A. 2 Water Research Institute National Research Council IRSA CNR , 00010 Rome, Italy; l.mariani@irsa.cnr.it L.M. ; rolando@irsa.cnr.it L.R. ; grenni@irsa.cnr.it P.G. ; barracaracciolo@irsa.cnr.it A.B.C. 3 Department of Ecological and Biological Science DEB Tuscia University , 01100 Viterbo, Italy 4 Department of Earth and Environmental Sciences, University of Milano Bicocca, 20126 Milan, Italy; antonio.finizio@unimib.it 5 Institute of Research on Terrestrial Ecosystems National Research Council IRET CNR , 00010 Rome, Italy; valerio.muzzini@ibaf.cnr.it 6 Institute for Biological Systems National Research Council ISB CNR , 00010 Rome, Italy; enrica.donati@cnr.it 7 Italian Institute of Health ISS Environmental and Health Department, 00161 Rome, Italy; ines.lacchetti@iss.it 8 ITALFERR S.p.A, 00155 Rome, Italy; s.padulosi@italferr.it A wide use of foaming agents as lubricants is required in mechanized tunneling. Their main component, the anionic surfactant sodium lauryl ether sulphate SLES , can remain in residual concentrations in soil debris, influencing their potential reuse as by product. This study aimed at evaluating the environmental fate and eects of a foaming product used for conditioning soils collected from real excavation sites, in the presence/absence of an anti clogging polymer, both containing SLES. Soil microcosm experiments were set up and incubated for 28 days. Over time, soils and their water extracts elutriates were collected to perform both ecotoxicological tests Vibrio fischeri, Lepidium sativum, Eisenia foetida, Hetereocypris incongruens, Danio rerio and SLES analysis. The results showed that, just after conditioning, SLES did not exert any hazardous eect on the organisms tested except for the bacterium V. fischeri, which was the most sensitive to its presence. However, from day seven the toxic eect on the bacterium was never observed thanks to the SLES decrease in the elutriates <2 mg/L . SLES degraded in soils half lives from 9 to 25 days with higher disappearance rates corresponding to higher values of microbial abundances. This study highlights the importance of site specific studies for assessing the environmental reuse of spoil materials. 12 Published version http //www.mdpi.com/journal/water PaperWater_2020 Pubblicazione Internazionale ISI Water_Patrolecco_2020.pdf Articolo in rivista Molecular Diversity Preservation International 2073 4441 Water Basel Water Basel Water Basel Water. Basel MARIANI LIVIA ROLANDO LUDOVICA tanitapescatore PESCATORE TANITA luisa.patrolecco PATROLECCO LUISA anna.barracaracciolo BARRA CARACCIOLO ANNA paola.grenni GRENNI PAOLA nicoletta.ademollo ADEMOLLO NICOLETTA francesca.spataro SPATARO FRANCESCA enrica.donati DONATI ENRICA jasmin.rauseo RAUSEO JASMIN valeriogiorgio.muzzini MUZZINI VALERIO GIORGIO |
