摘要：Plastic waste pollution causes several impacts on the environment, so its proper disposal is veryessential. On the other hand, petroleum resources are vanishing due to high demand of fuel forgrowing population and limited resources in India. So, there is a need to save existing resources andfind an alternative source for fossil fuels. We can convert household plastic waste into petroleumproducts by pyrolysis method. In the present study, lab scale borosilicate pyrolysis reactor set up wasdesigned for plastic waste treatment. Major components of household plastic waste are HDPE, LDPEand PP material, so were used in pyrolysis. Shredding, washing and drying of plastic waste was donemanually. Pyrolysis experiments were carried out for 100g of HDPE, LDPE and PP waste with andwithout catalyst. Temperature and reaction time were optimized for each type of waste. Differentcatalysts like alumina, scolecite, dolomite, ceramic powder, white cement, sand and red brick powderwere tried in the pyrolysis process. As dolomite yielded maximum liquid fuel and is cost effective, it hasbeen used in pyrolysis experiments with different catalysts to feed ratios. Liquid fuel obtained forHDPE, LDPE and PP enhanced from 72%, 73% and 84% to 82%, 83% and 85% respectively, by using10% dolomite. For mixed plastic waste, liquid fuel obtained was about 72.96% without catalyst and82% with 10 % dolomite. Liquid fuel was characterized for GC-MS, FTIR and calorific values. Resultsshowed the presence of alkanes and alkenes in major quantity and increase in concentration of lowmolecular weight hydrocarbon fractions (C10-C25) in the liquid fuel. Liquid fuel obtained from HDPE, LDPEand PP by using 10% dolomite showed higher calorific values (43000-46000 kJ/kg) as compared tothat of without catalyst (40000-42000 kJ/kg). This liquid fuel can be used as a fuel in different industrialsectors.
关键词：Plastic waste;
Pyrolysis;
HDPE; LDPE; PP
Dolomite;
FTIR;
Calorific value
