Peer-Reviewed Journal Details
Mandatory Fields
Miandad R;Nizami AS;Rehan M;Barakat MA;Khan MI;Mustafa A;Ismail IM;Murphy JD;
Waste Management (New York, N.Y.)
Influence of temperature and reaction time on the conversion of polystyrene waste to pyrolysis liquid oil.
WOS: 92 ()
Optional Fields
This paper aims to investigate the effect of temperature and reaction time on the yield and quality of liquid oil produced from a pyrolysis process. Polystyrene (PS) type plastic waste was used as a feedstock in a small pilot scale batch pyrolysis reactor. At 400C with a reaction time of 75min, the gas yield was 8% by mass, the char yield was 16% by mass, while the liquid oil yield was 76% by mass. Raising the temperature to 450C increased the gas production to 13% by mass, reduced the char production to 6.2% and increased the liquid oil yield to 80.8% by mass. The optimum temperature and reaction time was found to be 450C and 75min. The liquid oil at optimum conditions had a dynamic viscosity of 1.77mPas, kinematic viscosity of 1.92cSt, a density of 0.92g/cm(3), a pour point of -60C, a freezing point of -64C, a flash point of 30.2C and a high heating value (HHV) of 41.6MJ/kg this is similar to conventional diesel. The gas chromatography with mass spectrophotometry (GC-MS) analysis showed that liquid oil contains mainly styrene (48%), toluene (26%) and ethyl-benzene (21%) compounds.
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