Catalytic Pyrolysis of High-Density Polyethylene: Decomposition Efficiency and Kinetics

Organic waste is generally characterized by high volume-to-weight ratios, requiring implementation of minimization processes. In the present study, decomposition high-density polyethylene (HDPE), was studied under thermal and catalytic pyrolysis conditions on two experimental systems. Firstly, pyrolytic for HDPE were optimized in a laboratory-scale batch reactor. order to maximize gas yields minimize secondary waste, effects aluminosilicate catalysts, catalyst loading, reaction temperature efficiency examined. Secondly, kinetics temperatures large capacity thermobalance, especially adjusted perform experiments at larger scale (up 20 g). The addition catalysts shown enhance polymer decomposition, demonstrated higher conversions. Condensable could be further minimized increasing ratio from 0.1 0.2. most prominent reduction obtained over ZSM-5 with low Si/Al ratios; however, this impact accompanied slower rate. Of zeolites tested, 25 found efficient organic destruction, leading conversions (~90 wt%.) 30-fold solid mass.