Application of Subcritical Water to Dechlorinate Polyvinyl Chloride Electric Wires

Aurora Soler, Juan A. Conesa and Nuria Ortuño
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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

Energies, 2018, vol. 11, issue 10, 1-14

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.

Keywords: dechlorination; hydrothermal treatment; thermogravimetric study; pyrolysis; chlorophenols; chlorobenzenes (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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