Pyrolysis of Polyethylene and Polypropylene Packaging Wastes

Abstract

This study aims to investigate the suitable process to pyrolysis waste plastics to product gas and oil. Pyrolysis of low density polyethylene (LDPE), high density polyethylene (HDPE), polypropylene (PP) and mixture of PP:PE (ratio 50:50) packaging wastes was studied to find the effective pyrolysis conditions. The packaging wastes were pyrolyzed under nitrogen at 300- 350 degree celsius for 2 h. The pyrolysis reactor was design to prevent the radical combination. Oil products from pyrolysis of LDPE, HDPE, PP and PP:PE mixture (ratio 50:50) packaging wastes are 57.84, 78.1 3, 55.1 9 and 73.11 %wt/wt respectively. Analysis of pyrolyzed products compared with standard diesel fuel indicated that modification of product oil prior to utilization as fuel is necessary.