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PYROLYSIS OF VARIOUS TYRE TYPES: CHARACTERISTICS AND KINETIC STUDIES USING THERMOGRAVIMETRIC ANALYSIS

  • Samuel Ayodele Iwarere - Chemical Engineering, University of KwaZulu-Natal, South Africa
  • Ntandoyenkosi Malusi Mkhize - Chemical Engineering, University of KwaZulu-Natal, South Africa

DOI 10.31025/2611-4135/2019.13870

Released under CC BY-NC-ND

Copyright: © 2019 CISA Publisher

Editorial History

  • Received: 16 Jul 2019
  • Revised: 28 Sep 2019
  • Accepted: 04 Oct 2019
  • Available online: 20 Nov 2019

Abstract

The present study entails investigating the fractional devolatilisation effect on the passenger car tyre (PCT) and truck tyre (TT). Thermograms and their first derivatives are used to profile devolatilisation of the passenger and truck tyres rubbery fractions. Both tyre types rubbery fractions consist of mainly natural rubber (or polyisoprene, NR) and synthetic rubber (polybutadiene, BR and styrene-butadiene, SBR). The NR is relatively significant compared to the BR and SBR in the TT. In the PCT, the rubbery fraction showed equal distributions between the NR and BR-SBR. Unlike conventional waste resources pyrolysis processes where the aim is towards energy recovery, novel pyrolysis is designed based on the characteristics of the materials in order to promote the production of the valuable products in addition to the energy recovery. Therefore, kinetic mechanisms pathways of the rubbery fraction devolatilisation from waste tyre pyrolysis are studied and models are developed. Model-free methods, such as Friedman and Kissinger are used to model the kinetics parameters.

Keywords


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