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Open AccessFeature PaperArticle

Application of Subcritical Water to Dechlorinate Polyvinyl Chloride Electric Wires

Department of Chemical Engineering, University of Alicante, P.O. Box 99, E-03080 Alicante, Spain
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Energies 2018, 11(10), 2612; https://doi.org/10.3390/en11102612
Received: 19 September 2018 / Revised: 27 September 2018 / Accepted: 28 September 2018 / Published: 1 October 2018
(This article belongs to the Section Sustainable Energy)
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. View Full-Text
Keywords: dechlorination; hydrothermal treatment; thermogravimetric study; pyrolysis; chlorophenols; chlorobenzenes dechlorination; hydrothermal treatment; thermogravimetric study; pyrolysis; chlorophenols; chlorobenzenes
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MDPI and ACS Style

Soler, A.; Conesa, J.A.; Ortuño, N. Application of Subcritical Water to Dechlorinate Polyvinyl Chloride Electric Wires. Energies 2018, 11, 2612.

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