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Dechlorination of contaminated sediments of Ionian Sea

Thermoanalytical investigations

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  • Material Science/Kinetics/Geoscience
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Abstract

Natural dredged sediments contaminated by PCBs from the heavy industrialized harbor of Taranto (S. Italy) on the Ionian Sea, previously dechlorinated by mechanical activation in different ball mills (SPEX and AGO-2), together with synthetic mixtures emulating the contaminated sediments, were submitted to thermogravimetric and calorimetric measurements as well as to X-ray powder diffraction in order to clarify the dechlorination reaction mechanism.

Both major sediment components, i.e., carbonates and clay minerals, were found to be affected by the mechanical activation. As trace pollutants like PCBs are concentrated in clays, the mechanical activation of sediments increases the release of pollutants yielding a more active decontamination.

DSC results were less informative as calorimetric peaks from different thermal events were found to overlap.

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Authors and Affiliations

  1. ‘Molecular Design and Ecologically Safe Technologies’ REC-008, Novosibirsk State University, Ul. Pirogova 2, Novosibirsk, 630090, Russia

    V. A. Drebushchak, T. N. Drebushchak & V. V. Boldyrev

  2. Institute of Mineralogy and Petrography SB RAS, Pr. Ac. Koptyuga 3, Novosibirsk, 630090, Russia

    V. A. Drebushchak

  3. Department of Environmental Engineering and Sustainable Development, Technical University of Bari, 74100, Taranto, Italy

    G. Intini, L. Liberti, M. Notarnicola & T. Pastore

  4. Institute of Solid State Chemistry and Mechanochemistry SB RAS, Ul. Kutateladze 3, Novosibirsk, 630128, Russia

    T. N. Drebushchak & V. V. Boldyrev

Authors
  1. V. A. Drebushchak
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  2. G. Intini
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  3. L. Liberti
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  4. M. Notarnicola
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  5. T. Pastore
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  6. T. N. Drebushchak
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  7. V. V. Boldyrev
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Correspondence to V. A. Drebushchak.

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Drebushchak, V.A., Intini, G., Liberti, L. et al. Dechlorination of contaminated sediments of Ionian Sea. J Therm Anal Calorim 90, 143–146 (2007). https://doi.org/10.1007/s10973-006-7604-4

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  • DOI: https://doi.org/10.1007/s10973-006-7604-4

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