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Application of Subcritical Water to Dechlorinate Polyvinyl Chloride Electric Wires

Author

Listed:
  • Aurora Soler

    (Department of Chemical Engineering, University of Alicante, P.O. Box 99, E-03080 Alicante, Spain)

  • Juan A. Conesa

    (Department of Chemical Engineering, University of Alicante, P.O. Box 99, E-03080 Alicante, Spain)

  • Nuria Ortuño

    (Department of Chemical Engineering, University of Alicante, P.O. Box 99, E-03080 Alicante, Spain)

Abstract

Polyvinyl chloride (PVC) electric wires were subjected to dechlorination in subcritical water at three different temperatures in a high-pressure reactor. About 2.09, 73.08, and 95.96 wt % of chlorine in PVC wires was removed during dechlorination at 200 °C, 250 °C, and 300 °C, respectively. The solid residues were analyzed and characterized by thermogravimetry, at three different heating rates (5 °C, 10 °C, and 20 °C/min) in inert and oxidizing atmosphere. With the purpose of studying the emission of chlorinated pollutants, pyrolysis experiments at 850 °C were also performed in a laboratory-scale reactor with the dechlorinated materials, as well as with the original PVC electric wire. Polycyclic aromatic hydrocarbons (PAH) formation increased, but chlorobenzenes (ClBz) and chlorophenols (ClPh) formation decreased as the temperature of dechlorination increased; naphthalene was the most abundant PAH and monochlorobenzene and monochlorinated phenols (3-+4-) were the most abundant chlorinated compounds.

Suggested Citation

  • Aurora Soler & Juan A. Conesa & Nuria Ortuño, 2018. "Application of Subcritical Water to Dechlorinate Polyvinyl Chloride Electric Wires," Energies, MDPI, vol. 11(10), pages 1-14, October.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:10:p:2612-:d:173093
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    Cited by:

    1. Yang, Fangming & Liu, Xin & Li, Mengbin & Uguna, Clement & Wang, Wenlong & Sun, Chenggong, 2023. "Polyvinyl chloride (PVC) derived microporous carbons prepared via hydrothermal dechlorination and potassium hydroxide activation for efficient CO2 capture," Renewable and Sustainable Energy Reviews, Elsevier, vol. 180(C).

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