Abstract
Pyrolysis of plastic material is a potential way for the conversion of plastic into hydrocarbon fuel. Thermal and catalytic pyrolysis of high-density polyethylene (HDPE) and polypropylene (PP) were conducted in a cylindrical stainless-steel reactor at temperatures ranging from 350 °C to 500 °C. Optimum temperatures for the maximum liquid fuel production of 65% were found to be 425 °C for HDPE and 470 °C for PP. A mixture of packaging plastics, virgin HDPE and PP (2:1:1) was also subjected to the reactor at 425 °C, and liquid, gas and solid yields of 55%, 25%, and 20% were observed. The reduction of temperature from 425 °C to 375 °C for HDPE and from 500 to 400 °C for PP was possible using Silica-Alumina catalyst. The liquid products consist of benzene, toluene, xylene, indene, etc. with the caloric value of 40.9 and 41.1 MJ/Kg for HDPE and PP, respectively, which indicated that the liquid would be able to serve as alternative source of energy. Later, nitrogen as a carrier gas was introduced and liquid conversion increased from 65 to 80% at 425 °C for HDPE and from 65 to 75% at 470 °C for PP in thermal pyrolysis. The paper also reviewed key parameters influencing pyrolysis like temperature, catalysts, and carrier gas. In addition, this paper discussed several perspectives for optimising liquid oil production. Conversion of plastic polymers into fuel by thermal and catalytic processes will be very relevant to recover resources from plastic waste and will also help to decrease the load of plastic wastes in landfill sites.
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References
Aguado J, Serrano DP, Escola JM, Garagorri E, Fernandez JA (2000) Catalytic conversion of polyolefins into fuels over zeolite beta. Polym Degrad Stab 69:11–16. https://doi.org/10.1016/S0141-3910(00)00023-9
Ahmad I, Khan MI, Khan H, Ishaq M, Tariq R, Gul K, Ahmad W (2014) Pyrolysis study of polypropylene and polyethylene into premium oil products. Int J Green Energy 12:663–671. https://doi.org/10.1080/15435075.2014.880146
Al-Salem SM (2019) Thermal pyrolysis of high-density polyethylene (HDPE) in a novel fixed bed reactor system for the production of high value gasoline range hydrocarbons (HC). Process Saf Environ Prot 127:171–179. https://doi.org/10.1016/j.psep.2019.05.008
Busca G (2019) Silica-alumina catalytic materials: a critical review. Catal Today. https://doi.org/10.1016/j.cattod.2019.05.011
Gaffney JS, Marley NA (2009) The impacts of combustion emissions on air quality and climate–from coal to biofuels and beyond. Atmosc Environ 43(1):23–36. https://doi.org/10.1016/j.atmosenv.2008.09.016
HakkiMetecan I, Ozkan A, Isler R, Yanik J, Saglam M, Yuksel M (2005) Naphtha derived from polyolefins. Fuel 84(5):619–628. https://doi.org/10.1016/j.fuel.2004.10.006
Implementation of Plastic waste management rules (2019) Ministry of Environment, Forest and Climate Change; Central Pollution Control Board, Government of India
Jung SH, Cho MH, Kang BS, Kim JS (2010) Pyrolysis of a fraction of waste polypropylene and polyethylene for the recovery of BTX aromatics using a fluidized bed reactor. Fuel Process Technol 91(3):277–284. https://doi.org/10.1016/j.fuproc.2009.10.009
Kizza R, Banadda N, Seay J (2021) Qualitative and energy recovery potential analysis: plastic-derived fuel oil versus conventional diesel oil. Clean Technol Environ Policy. https://doi.org/10.1007/s10098-021-02028-9
Kumar S, Singh RK (2013) Thermolysis of high-density polyethylene to petroleum products energy conversion. J Pet Eng. https://doi.org/10.1155/2013/987568
Li P, Wang X, Su M, Zou X, Duan L, Zhang H (2020) Characteristics of plastic pollution in the environment: A review. Bull Environ Contam Toxicol. https://doi.org/10.1007/s00128-020-02820-1
Martynis M, Mulyazmi WE, Harahap AN (2019) Thermal pyrolysis of polypropylene plastic waste into liquid fuel: reactor performance evaluation. IOP Conf Ser Mater Sci Eng. https://doi.org/10.1088/1757-899X/543/1/012047
Sakata Y, Uddin MA, Muto A (1999) Degradation of polyethylene and polypropylene into fuel oil by using solid acid and non acid catalysts. J Anal Appl Pyrol 51:135–155. https://doi.org/10.1016/S0165-2370(99)00013-3
Sharuddin SDA, Abnisa F, Daud WMAW, Aroua MK (2016) A review on pyrolysis of plastic wastes. Energy Convers Manag 115:308–326. https://doi.org/10.1016/j.enconman.2016.02.037
Siddique MN, Gondal AM, Nasr MM (2009) Determination of trace metals using laser induced breakdown spectroscopy in insoluble organic materials obtained from pyrolysis of plastics waste. Bull Environ Contam Toxicol 83:141–145. https://doi.org/10.1007/s00128-009-9749-x
Uddin MA, Koizumi K, Murata K, Sakata Y (1997) Thermal and catalytic degradation of structurally different types of polyethylene into fuel oil. Polym Degrad Stab 56:37–44. https://doi.org/10.1016/S0141-3910(96)00191-7
Williams PT, Williams EA (1998) Interaction of plastics in mixed-plastics pyrolysis. Energy Fuel 13:188–196. https://doi.org/10.1021/ef980163x
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The authors are grateful to IIEST Shibpur and NIT Sikkim for the support during the research work. The authors thankfully acknowledge the comments received from the reviewers which have helped in improving the manuscript.
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Dutta, N., Gupta, A. An experimental study on conversion of high-density polyethylene and polypropylene to liquid fuel. Clean Techn Environ Policy 23, 2213–2220 (2021). https://doi.org/10.1007/s10098-021-02121-z
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DOI: https://doi.org/10.1007/s10098-021-02121-z