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A Comparison Between Field Applications of Nano-, Micro-, and Millimetric Zero-Valent Iron for the Remediation of Contaminated Aquifers

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Abstract

In the last 10 years, the number of field applications of zero-valent iron differing from permeable reactive barrier has grown rapidly and at present are 112. This study analyzes and compares such field applications. By using statistical analysis, especially ANOVA and principal component analysis, this study shows that chlorinated solvent contamination can be treated efficiently by using zero-valent iron material singly or associated with other technologies. In the analyzed sample of case studies, the association with microbial dechlorination increased significantly the performances of nanoscale iron. This is likely due to the synergistic effect between the two processes. Millimetric iron was always used in association with source zone containment; therefore, it is not possible to distinguish the contributions of the two techniques. The comparison also shows that catalyst addition seems to not dramatically improve treatment efficiency and that such improvement is not statistically significant. Finally, the injection technology is correlated to the type of iron and to the soil permeability.

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Acknowledgements

This work was conducted under the CIPE-C30 project funded by Regione Piemonte (Italy) and partially supported by the Lagrange Grant from Fondazione C.R.T. (Italy).

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Authors and Affiliations

  1. DITAG—Dipartimento del Territorio, dell’Ambiente e delle Geotecnologie, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129, Turin, Italy

    Silvia Comba, Antonio Di Molfetta & Rajandrea Sethi

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  1. Silvia Comba
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  2. Antonio Di Molfetta
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  3. Rajandrea Sethi
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Correspondence to Silvia Comba.

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Comba, S., Di Molfetta, A. & Sethi, R. A Comparison Between Field Applications of Nano-, Micro-, and Millimetric Zero-Valent Iron for the Remediation of Contaminated Aquifers. Water Air Soil Pollut 215, 595–607 (2011). https://doi.org/10.1007/s11270-010-0502-1

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