Characterization of products obtained of waste polyethylene terephthalate by pyrolysis

Olam M., KARACA H.

ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY, cilt.41, sa.4, 2022 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 41 Sayı: 4
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1002/ep.13835
  • Dergi Adı: ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Agricultural & Environmental Science Database, Applied Science & Technology Source, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), Biotechnology Research Abstracts, Chemical Abstracts Core, Compendex, Computer & Applied Sciences, Environment Index, Greenfile, INSPEC, Pollution Abstracts
  • Anahtar Kelimeler: diesel, microwave pre-treated, PET, pyrolysis, sodium borohydride, MUNICIPAL SOLID-WASTE, CATALYTIC PYROLYSIS, PLASTIC WASTE, POLYSTYRENE, CRUDE, FUEL
  • İnönü Üniversitesi Adresli: Evet

Özet

In this study, waste polyethylene terephthalate (wPET) was converted to liquid fuel by the pyrolysis method. It was also investigated both effects of microwave pre-treatment and catalyst (sodium borohydride) on total conversion and oil + gas yield. The reaction temperature of 375-425 degrees C and the reaction time of 30 min are sufficient for the pyrolysis of waste plastic samples in a batch reactor. In the pyrolysis of wPETs, the highest oil + gas yield of 45% was obtained under the conditions of reaction temperature of 425 degrees C and reaction time of 30 min. The highest total conversion was 62% of microwave pre-treated wPETs under catalytic conditions. It can be argued that microwave pre-treatment and NaBH4 influence the oil + gas yield in pyrolysis experiments. According to the gas chromatography-mass spectrometry (GC-MS) analysis results of the oil products, they consist of aromatic, mono and multi-ring aromatic compounds and polyaromatic compounds. Higher heating values of the solid products obtained in pyrolysis are approximately 4000-6000 cal/g. According to X-ray diffraction analysis (XRD) of the solid products, they consist largely of crystalline terephthalic acid (C8H6O4).