Valuable oil recovery from plastic wastes via pressurized thermal and catalytic pyrolysis
The accumulating amounts of long-life plastic wastes simultaneously with the global emerging need to discover alternative energy sources, have both increased the importance of plastic pyrolysis-based refineries. This study was devoted to examine the effectiveness of municipal plastic wastes recyclin...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-10-01
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| Series: | Energy Conversion and Management: X |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590174523000867 |
| _version_ | 1797769764795318272 |
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| author | Rusul M. Khazaal Dhuha A. Abdulaaima |
| author_facet | Rusul M. Khazaal Dhuha A. Abdulaaima |
| author_sort | Rusul M. Khazaal |
| collection | DOAJ |
| description | The accumulating amounts of long-life plastic wastes simultaneously with the global emerging need to discover alternative energy sources, have both increased the importance of plastic pyrolysis-based refineries. This study was devoted to examine the effectiveness of municipal plastic wastes recycling into a potential source of hydrocarbon fuel. Thermoplastic wastes of polypropylene (PP), polystyrene (PS), high-density and low-density polyethylene (HDPE) (LDPE), were converted into a combustible oil via semi-batch pressurized thermal (Th-PP) and catalytic pyrolysis (Cat-PP) in a fixed-bed reactor. During Th-PP, the recovered amounts of oil were (67.6 % −89.25 %) in the order PP > LDPE > HDPE > PS. Moreover, it was shown that 77.5% of the PP pyro-oil was in the range of gasoline fraction (C6 – C12) with maximum iso-paraffins of 12.52% compared to other plastic pyro-oils. The Cat-PP process, involved the catalytic cracking via a Ni-Mo-w/zeolite-based catalyst (Z-503). It was noticed that the catalyst resulted in further cracking reactions leading to the increase of the light gases vs oil product. Oil yields via Cat-PP were (55.1%–68.2%) in the order LDPE > PP > PS > HDPE. The catalytic pyrolysis showed a major tendency to the formation of diesel (C12 – C24). However, the selectivity analysis regarding both physical and chemical characteristics of the obtained oils vs conventional fuels, indicated that PP pyro-oil produced via the thermal pyrolysis, exhibited the highest selectivity of all oils towards conventional gasoline. This study has introduced a promising alternative energy source together with an effective recycling technology, solving the environmental plastic dilemma. |
| first_indexed | 2024-03-12T21:13:42Z |
| format | Article |
| id | doaj.art-327ff2f73e054e51881162d9b28dbbe6 |
| institution | Directory Open Access Journal |
| issn | 2590-1745 |
| language | English |
| last_indexed | 2024-03-12T21:13:42Z |
| publishDate | 2023-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Conversion and Management: X |
| spelling | doaj.art-327ff2f73e054e51881162d9b28dbbe62023-07-30T04:22:53ZengElsevierEnergy Conversion and Management: X2590-17452023-10-0120100430Valuable oil recovery from plastic wastes via pressurized thermal and catalytic pyrolysisRusul M. Khazaal0Dhuha A. Abdulaaima1Corresponding author.; TheIraqi Ministry of Oil, Petroleum Research & Development Center, Environmental Studies Dept., Baghdad, IraqTheIraqi Ministry of Oil, Petroleum Research & Development Center, Environmental Studies Dept., Baghdad, IraqThe accumulating amounts of long-life plastic wastes simultaneously with the global emerging need to discover alternative energy sources, have both increased the importance of plastic pyrolysis-based refineries. This study was devoted to examine the effectiveness of municipal plastic wastes recycling into a potential source of hydrocarbon fuel. Thermoplastic wastes of polypropylene (PP), polystyrene (PS), high-density and low-density polyethylene (HDPE) (LDPE), were converted into a combustible oil via semi-batch pressurized thermal (Th-PP) and catalytic pyrolysis (Cat-PP) in a fixed-bed reactor. During Th-PP, the recovered amounts of oil were (67.6 % −89.25 %) in the order PP > LDPE > HDPE > PS. Moreover, it was shown that 77.5% of the PP pyro-oil was in the range of gasoline fraction (C6 – C12) with maximum iso-paraffins of 12.52% compared to other plastic pyro-oils. The Cat-PP process, involved the catalytic cracking via a Ni-Mo-w/zeolite-based catalyst (Z-503). It was noticed that the catalyst resulted in further cracking reactions leading to the increase of the light gases vs oil product. Oil yields via Cat-PP were (55.1%–68.2%) in the order LDPE > PP > PS > HDPE. The catalytic pyrolysis showed a major tendency to the formation of diesel (C12 – C24). However, the selectivity analysis regarding both physical and chemical characteristics of the obtained oils vs conventional fuels, indicated that PP pyro-oil produced via the thermal pyrolysis, exhibited the highest selectivity of all oils towards conventional gasoline. This study has introduced a promising alternative energy source together with an effective recycling technology, solving the environmental plastic dilemma.http://www.sciencedirect.com/science/article/pii/S2590174523000867Plastic wastesPyrolysisCracking catalystPyro-oilWaste to Energy Technology |
| spellingShingle | Rusul M. Khazaal Dhuha A. Abdulaaima Valuable oil recovery from plastic wastes via pressurized thermal and catalytic pyrolysis Energy Conversion and Management: X Plastic wastes Pyrolysis Cracking catalyst Pyro-oil Waste to Energy Technology |
| title | Valuable oil recovery from plastic wastes via pressurized thermal and catalytic pyrolysis |
| title_full | Valuable oil recovery from plastic wastes via pressurized thermal and catalytic pyrolysis |
| title_fullStr | Valuable oil recovery from plastic wastes via pressurized thermal and catalytic pyrolysis |
| title_full_unstemmed | Valuable oil recovery from plastic wastes via pressurized thermal and catalytic pyrolysis |
| title_short | Valuable oil recovery from plastic wastes via pressurized thermal and catalytic pyrolysis |
| title_sort | valuable oil recovery from plastic wastes via pressurized thermal and catalytic pyrolysis |
| topic | Plastic wastes Pyrolysis Cracking catalyst Pyro-oil Waste to Energy Technology |
| url | http://www.sciencedirect.com/science/article/pii/S2590174523000867 |
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