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Characterization of Some Real Mixed Plastics from WEEE: A Focus on Chlorine and Bromine Determination by Different Analytical Methods

Author

Listed:
  • Beatrice Beccagutti

    (Department for Sustainability, ENEA—Casaccia Research Center, Via Anguillarese 301, Santa Maria di Galeria, Rome 00123, Italy)

  • Lorenzo Cafiero

    (Department for Sustainability, ENEA—Casaccia Research Center, Via Anguillarese 301, Santa Maria di Galeria, Rome 00123, Italy)

  • Massimiliana Pietrantonio

    (Department for Sustainability, ENEA—Casaccia Research Center, Via Anguillarese 301, Santa Maria di Galeria, Rome 00123, Italy)

  • Stefano Pucciarmati

    (Department for Sustainability, ENEA—Casaccia Research Center, Via Anguillarese 301, Santa Maria di Galeria, Rome 00123, Italy)

  • Riccardo Tuffi

    (Department for Sustainability, ENEA—Casaccia Research Center, Via Anguillarese 301, Santa Maria di Galeria, Rome 00123, Italy)

  • Stefano Vecchio Ciprioti

    (Department of Basic and Applied Science for Engineering, Sapienza University of Rome, Via del Castro Laurenziano 7, Rome 00161, Italy)

Abstract

Bromine and chlorine are almost ubiquitous in waste of electrical and electronic equipment (WEEE) and the knowledge of their content in the plastic fraction is an essential step for proper end of life management. The aim of this study is to compare the following analytical methods: energy dispersive X-ray fluorescence spectroscopy (ED-XRF), ion chromatography (IC), ion-selective electrodes (ISEs), and elemental analysis for the quantitative determination of chlorine and bromine in four real samples taken from different WEEE treatment plants, identifying the best analytical technique for waste management workers. Home-made plastic standard materials with known concentrations of chlorine or bromine have been used for calibration of ED-XRF and to test the techniques before the sample analysis. Results showed that IC and ISEs, based upon dissolution of the products of the sample combustion, have not always achieved a quantitative absorption of the analytes in the basic solutions and that bromine could be underestimated since several oxidation states occur after combustion. Elemental analysis designed for chlorine determination is subjected to strong interference from bromine and required frequent regeneration and recalibration of the measurement cell. The most reliable method seemed to be the non-destructive ED-XRF. Calibration with home-made standards, having a similar plastic matrix of the samples, enabled us to carry out quantitative determinations, which have been revealed to be satisfactorily accurate and precise. In all the analyzed samples a total concentration of chlorine and/or bromine between 0.6 and 4 w/w% was detected, compromising the feasibility of a mechanical recycling and suggesting the exploration of an alternative route for managing these plastic wastes.

Suggested Citation

  • Beatrice Beccagutti & Lorenzo Cafiero & Massimiliana Pietrantonio & Stefano Pucciarmati & Riccardo Tuffi & Stefano Vecchio Ciprioti, 2016. "Characterization of Some Real Mixed Plastics from WEEE: A Focus on Chlorine and Bromine Determination by Different Analytical Methods," Sustainability, MDPI, vol. 8(11), pages 1-17, October.
    • Handle: RePEc:gam:jsusta:v:8:y:2016:i:11:p:1107-:d:81680
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    References listed on IDEAS

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    1. Kantarelis, E. & Yang, W. & Blasiak, W. & Forsgren, C. & Zabaniotou, A., 2011. "Thermochemical treatment of E-waste from small household appliances using highly pre-heated nitrogen-thermogravimetric investigation and pyrolysis kinetics," Applied Energy, Elsevier, vol. 88(3), pages 922-929, March.
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    Cited by:

    1. Michal Holubčík & Ivana Klačková & Peter Ďurčanský, 2020. "Pyrolysis Conversion of Polymer Wastes to Noble Fuels in Conditions of the Slovak Republic," Energies, MDPI, vol. 13(18), pages 1-12, September.

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