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• W3082679968 abstract "As an alternative to conventional plastic-waste treatments, herein, we report a pyrolytic plastic-recovery process in which diverse compounds and materials are recovered from the pyrolysis oil obtained from the plastic waste. Distillation of the pyrolysis oil led to a bitumen and a distilled fraction. The composition of the bitumen, as determined by saturate, aromatic, resin, and asphaltene (S.A.R.A.) analysis and corroborated by Fourier-transform infrared (FTIR) spectroscopy, was found to principally contain aromatics (55.05 wt%) and saturates (33.41 wt%), and has great potential as a modifier for bitumen mixtures by decreasing the viscosities or softening points of final products. The distilled fraction was characterised and compared to pyrolysis oil in terms of its physicochemical properties and composition. Analysis by gas-chromatography/mass-spectrometry (GC-MS) revealed high levels of aromatics, namely styrene, benzene, toluene, ethylbenzene, and α-methylstyrene, which are potentially recoverable base compounds for industrial use. With this in mind, the distillate was subjected to various processes, including aromatic extraction with sulfolane and subsequent fractional distillation to recover the principal compounds in the various GC-MS fractions. Fraction 1 was found to be rich in ethylbenzene and toluene, while fraction 2 contained 73.26 wt% styrene and was used to synthesise recycled polystyrene (PS), whose yield and molecular weight (Mw) were optimised by adjusting the initiator concentration, temperature, and time. The optimised recycled PS was characterised to provide a yield of 77.64% and a Mw higher than 53,000 g/mol; this recycled PS exhibited similar thermal properties to those of conventional PS prepared using petrochemical sources." @default.
• W3082679968 created "2020-09-08" @default.
• W3082679968 creator A5000911357 @default.
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• W3082679968 date "2020-12-01" @default.
• W3082679968 modified "2023-10-18" @default.
• W3082679968 title "Chemical recycling of plastic waste: Bitumen, solvents, and polystyrene from pyrolysis oil" @default.
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• W3082679968 doi "https://doi.org/10.1016/j.wasman.2020.08.035" @default.
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