Catalytic decomposition and kinetic study of mixed plastic waste

Scientific paper - Original scientific paper

• Author: Irma Kremer
• Author: Tihomir Tomić
• Author: Zvonimir Katančić
• Author: Zlata Hrnjak-Murgić
• Author: Matko Erceg
• Author: Daniel Rolph Schneider
• Author's institution: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; (Department of Energy, Power and Environmental Engineering); (Power Engineering and Energy Management Chair)
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Chemical Engineering

Abstract (english)

Pyrolysis is a promising technology for the valorisation of plastic waste by converting it into valuable products, such as fuels and chemicals. This study aims to assess the thermogravimetric behaviour and kinetic parameters of the real-world plastic waste mixture with added nickel- and iron-based catalysts on gamma- aluminium oxide as support. Thermogravimetric measurements were carried out in a nitrogen atmosphere over a set of heating rates (5, 10, 15 and 20 °C/min) within a temperature range 40–600 °C. Kinetic analysis was performed through a combined approach by using the model-free isoconversional Friedman method and regression methods (linear and multivariate nonlinear). The kinetic analysis results showed a complex decomposition mechanism of the real-world plastic waste mixture. The average apparent activation energy for the real-world plastic waste mixture (22% high-density polyethylene, 31% low-density polyethylene, 35% polypropylene, 12% polystyrene) was 205 kJ/mol. The initial value decreased by 15.6% with the addition of iron- based gamma- aluminium oxide catalyst and only 9.8% with nickel-based gamma-aluminium oxide catalyst.

• Keywords (english): plastic waste; pyrolysis; dynamic thermogravimetric analysis; kinetic study; catalyst
• Language: english
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - international
• Publication version: Published version
• Journal title: Clean Technologies and Environmental Policy
• Numbering: vol. 23, no. 3, pp. 811-827
• p-ISSN: 1618-954X
• e-ISSN: 1618-9558
• DOI: https://doi.org/10.1007/s10098-020-01930-y
• URN:NBN: urn:nbn:hr:235:784401
• Publication: 2021
• Project: Number: IP-2018-01-3200; Title (croatian): Napredni nositelji energije u oporabi plastičnog otpada; Acronym: NEOPLAST; Leader: Daniel Rolph Schneider; Jurisdiction: Croatia; Funding stream: Research Projects
• Document URL: https://link.springer.com/article/10.1007/s10098-020-01930-y
• Type of resource: Text
• Access conditions: Open access
• Created on: 2024-05-26 13:31:00