Environmental Engineering

Production of Liquid Hydrocarbons from Plastic Wastes

Published:
2019-12-12
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Dobó, Z., Kecsmár, G., Jakab, Z., Nagy, G., & Koós, T. (2019). Production of Liquid Hydrocarbons from Plastic Wastes. International Journal of Engineering and Management Sciences, 4(4), 345-350. https://doi.org/10.21791/IJEMS.2019.4.39.
Abstract

Thermal pyrolysis of HDPE, LDPE, PP and PS plastic wastes were performed in a batch reactor and the yields of pyrolysis oils and liquid transportation fuels prepared by atmospheric distillation were determined. The gasoline fractions were tested in a traditional spark-ignition engine without any modifications or fuel blending. Fuel consumption and exhaust gas emission (NOx, CO) were measured and compared to a commercial fuel (RON = 95). PS generated 70.5% gasoline range hydrocarbons from the solid waste, followed by PP with 42.1%, LDPE with 40.8% and HDPE with 37.3%. The fuel consumption was reduced by 9.1-9.4% in the case of PS compared to reference measurement. Reduction in fuel consumption was noticeable at HDPE, LDPE and PP as well. PS gasoline decreased by 91-96%, while HDPE, LDPE and PP more likely increased the CO emission of the engine compared to commercial gasoline. The results show that pyrolysis of plastic wastes is a promising method to generate value added liquid transportation fuels and reduce the footprint of waste accumulation in landfills.

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