Catalytic pyrolysis of polyolefin and multilayer packaging based waste plastics: A pilot scale study
| Autor: | K. Sivagami, Ramya Selvaraj, P. Madhiyazhagan, Govindaraj Divyapriya, N. Sriram, Indumathi M. Nambi |
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| Rok vydání: | 2021 |
| Předmět: |
Polypropylene
021110 strategic defence & security studies Environmental Engineering Materials science General Chemical Engineering 0211 other engineering and technologies 02 engineering and technology 010501 environmental sciences Polyethylene 01 natural sciences Polyolefin chemistry.chemical_compound chemistry Chemical engineering Pyrolysis oil Yield (chemistry) Environmental Chemistry Heat of combustion Char Safety Risk Reliability and Quality Pyrolysis 0105 earth and related environmental sciences |
| Zdroj: | Process Safety and Environmental Protection. 149:497-506 |
| ISSN: | 0957-5820 |
| Popis: | The catalytic pyrolysis of different types of polyolefin and multilayer packaging based plastic wastes in the presence of commercial zeolite catalyst was studied in the batch pilot scale reactor. Different types of multi-layer plastics such as biaxial oriented polypropylene (BOPP), metalized biaxial oriented polypropylene layers (MET/BOPP), poly ethylene terepthalate (PET), metalized polyethylene-terepthalate (MET/PET), PET combined polyethylene (PET/PE) and mixed polyolefin plastic wastes obtained from the municipal corporation were pyrolyzed to determine the oil, gas and char distribution. BOPP based plastic waste exhibited higher oil yield and calorific value (65–70%, 45.14 KJ/g) compared to PET based MLPs (17.8 %, 30 KJ/g) and laminated metalized plastics (13 %, 37 KJ/g). Modifying the feed composition by mixing of polyolefins-based waste plastics with PET based MLPs and BOPP/MET BOPP doubled the liquid yield and notably altered the physicochemical characterization of the resulted pyrolysis oil. Char yield in the polyolefins-based waste is observed to be lesser than the MLP based waste plastics. GC–MS analysis revealed the percentage area of hydrocarbons compounds of the pyrolysis oil obtained from PET based MLP experiments contains high fractions of medium and heavier range hydrocarbons (C11 – C20, C21 – C30). Sulfur content in the oil from different MLPs was measured as below the detection limit. Functional groups of hydrocarbons of oil were analyzed using FT-IR. Solids were characterized for the presence of heavy metals such as Al, Cr, Cu, Co, Pd, and Ni. |
| Databáze: | OpenAIRE |
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