Conversion of LDPE and PP plastic waste into fuel by pyrolysis method

This study aims to produce fuel from plastic waste and determine the physical properties of the fuel. Plastic waste used is mineral water bottles (polypropylene/PP) and plastic bags (low-density polyethylene/LDPE). The method used is an experimental method using pyrolysis. 1 kg of raw material is chopped before being put into the pyrolysis container. The container is then heated and turns the plastic into a liquid and then evaporates. The hot plastic vapor flows into a heat exchanger to be condensed. The cooling process uses water with a counter flow direction of the steam flow. The results of the steam condensation process are then analyzed for their physical properties. The fuel obtained from 1 kg of raw materials is 0.863-0.908 kg, with a density of 742 – 761 kg/m3. The kinematic viscosity of the fuel is between 1.75-1.93 cSt. Flash points 1-2 oC and fire points 8-9 oC with HHV of 44.6-46 MJ/kg. The volume of fuel from plastic bottles of mineral water is more and has a higher calorific value when compared to the fuel from plastic bags waste.