Abstract
The increasing rate of accumulation of plastic waste (PW) is quite disturbing to the world, particularly in developing nations due to its non-biodegradable nature and inadequate waste management practices. The need to properly manage this waste and utilize the potential and chemical energy value that can be derived from this waste justifies the encouragement and employment of newer and better recycling methods and technology of these wastes. Therefore, this has led us to explore the catalytic pyrolysis of plastic waste using zeolite Y synthesized from kaolin deposit in Covenant University, Sango Ota, Ogun state of Nigeria. A stainless steel packed bed reactor was used in the cracking of low-density polyethylene (LDPE) plastic wastes into liquid fuel components at a temperature of 300 ℃ using zeolite Y catalyst. The liquid fuel obtained from the catalytic pyrolysis was analyzed using GC–MS. Fifty compounds were identified, which revealed the presence of mostly alkenes and aromatics in the hydrocarbons range of C8–C29. This is made up of 56% of gasoline fractions range of C6–C12, 26% of diesel and kerosene fractions range C13–C18, and 10% of fuel oil range C18–C23, while 8% is residual fuel range greater than C24.
Highlights
The use of plastic material is of greater importance in our daily lives and its consumption has led to the drastic increase of plastic waste (PW) in the second half of the twentieth century [1]
This can be achieved by exploring recycling methods, which so far is the best option for PW management [5]
PW recycling methods have been mainly grouped into four major types, namely primary recycling involves waste scraps being processed into products with similar properties to the original products; secondary recycling has to do with waste/scrap plastics being processed into materials that have different properties to that of the initial product; tertiary methods deal with use of these waste scraps in the production of essential fuels and chemicals or as a segregated waste; and lastly quaternary recycling involves the burning of these plastics
Summary
The use of plastic material is of greater importance in our daily lives and its consumption has led to the drastic increase of PW in the second half of the twentieth century [1]. Effort toward the conversion of this PW to resourceful materials of valuable products and energy, in addition to solving the shortage of natural resources, in the nearest future has been a major area of research [2]. This can be achieved by exploring recycling methods, which so far is the best option for PW management [5]. PW recycling methods have been mainly grouped into four major types, namely primary recycling involves waste scraps being processed into products with similar properties to the original products; secondary recycling has to do with waste/scrap plastics being processed into materials that have different properties to that of the initial product; tertiary methods deal with use of these waste scraps in the production of essential fuels and chemicals or as a segregated waste; and lastly quaternary recycling involves the burning of these plastics
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