Catalytic pyrolysis of recycled HDPE, LDPE, and PP

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Issue Date
2021-05-25
Authors
Shoaib, Muhammad
Subeshan, Balakrishnan
Khan, Waseem Sabir
Asmatulu, Eylem
Advisor
Citation

Shoaib, M., Subeshan, B., Khan, W. S., & Asmatulu, E. (2021). Catalytic pyrolysis of recycled HDPE, LDPE, and PP. Progress in Rubber, Plastics and Recycling Technology, doi:10.1177/14777606211019414

Abstract

Plastic waste has been growing every year, and as a result, environmental concern has been a topic of much attention. Many properties of plastics, such as their lightweight, durability, and versatility, are significant factors in achieving sustainable development. The exponential increase of plastic production produces every year approximately 100 million tons of waste plastic, which could be converted into hydrocarbon fuels by employing a process appropriately called pyrolysis. Pyrolysis, which is thermal or catalytical, can be performed under different experimental conditions that affect the type and amount of product obtained. With the pyrolysis process, products can be obtained with high added value, such as fuel oils and feedstock for new products. In this study, magnesium silicate and Cloisite 30B were used as catalysts for the decomposition of different plastics, and the results were compared with the zeolite catalyst. In the case of high-density polyethylene (HDPE), the oil yield with a zeolite catalyst was found to be 71%, whereas with and Cloisite 30B, this was 68% and 67%, respectively. Zeolite produced better results in the decomposition of polypropylene (PP) compared to and Cloisite 30B. Fourier-transform infrared spectroscopy (FTIR), and gas chromatography (GC) were conducted in this work. The spectra results for all samples were consistent and in the fuel range.

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