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...Es web of conferences https doi org esconf icenis plastic waste pyrolysis optimization to produce fuel grade using factorial design renanto pandu wirawan farizal department industrial engineering university indonesia depok abstract is one the biggest production in world government targets reach for recycling alternative manage used degrade long chain polymer molecules into smaller all type except polyvinyl chloride pvc were this study purpose experiment was optimisation residence time and temperature maximise yield liquid products process k each factor result shows that able diesel like low keywords doe introduction due its chemical bond making resistant degradation plastics have a very life span every year human beings close million tons most end up environment damaging marine other ecosystems has environmental operational problems landfill because slow rate toxic dyes additives causes fires releases pollutants spread air water or acts as habitat mice disease causing flies fig average...