Pyrolysis and catalytic pyrolysis as a recycling method of waste CDs originating from polycarbonate and HIPS

E. V. Antonakou, K. G. Kalogiannis, S. D. Stephanidis, K. S. Triantafyllidis, A. A. Lappas, D. S. Achilias*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Pyrolysis appears to be a promising recycling process since it could convert the disposed polymers to hydrocarbon based fuels or various useful chemicals. In the current study, two model polymers found in WEEEs, namely polycarbonate (PC) and high impact polystyrene (HIPS) and their counterparts found in waste commercial Compact Discs (CDs) were pyrolysed in a bench scale reactor. Both, thermal pyrolysis and pyrolysis in the presence of two catalytic materials (basic MgO and acidic ZSM-5 zeolite) was performed for all four types of polymers. Results have shown significant recovery of the monomers and valuable chemicals (phenols in the case of PC and aromatic hydrocarbons in the case of HIPS), while catalysts seem to decrease the selectivity towards the monomers and enhance the selectivity towards other desirable compounds.

Original languageEnglish
Pages (from-to)2487-2493
Number of pages7
JournalWaste Management
Volume34
Issue number12
Early online date22 Sep 2014
DOIs
Publication statusPublished - 1 Dec 2014

Keywords

  • Compact discs
  • Monomers
  • Pyrolysis
  • Waste electrical and electronic equipment

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