Work

Catalytic pyrolysis of HDPE for enhanced hydrocarbon yield: A boosted regression tree assisted kinetics study for effective recycling of waste plastic

Year: 2024

Type: article

Abstract: This research work focuses on the kinetic study of pyrolysis of HDPE under catalytic and non-catalytic conditions. The activation energy (323 kJ/mol) of non-catalytic pyrolysis of HDPE was reduced to 164 kJ/mol during catalytic pyrolysis. Thermodynamic parameters such as change in activation enthalpy ( ), activation Gibbs free energy ( ) and, activation entropy ( ) were also significantly reduced during catalytic reaction. The statistical and machine-learning approaches were used in the kinetic analyses. Boosted regression trees (BRT) were used to predict the during conversion at different heating rates for non-catalytic and catalytic processes. The liquid and gas fractions obtained from HDPE at different temperatures were characterized. The increase in yield of hydrocarbons at elevated temperatures indicated the reuse potential of plastic waste. The comprehensive analysis of HDPE exhibited 86% of carbon and 14% of hydrogen contributing to high heating value (HHV) of 44.41 MJ/kg.

Source: Digital Chemical Engineering

DOI: 10.1016/j.dche.2024.100213

Authors: Shahina Riaz, Nabeel Ahmad, Wasif Farooq, Imtiaz Ali, Mohd Sajid, Muhammad Naseem Akhtar

Institutions: King Fahd University of Petroleum and Minerals, Prince Mohammad bin Fahd University, King Abdulaziz University

Language: English

Topic: Thermal and Kinetic Analysis

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDGs: Responsible consumption and production, Affordable and clean energy

Open Access status: gold

Estimated APC paid: $1,800