Pyrolysis of butyl rubber tube waste was performed under an inert nitrogen gas environment for temperature ranging between 25 and 1,000 °C, by varying the heating rates (5, 10, 20, 35, and 55 °C min<sup>−1</sup>). Five different iso-conversional approaches, namely, Differential Friedman, Ozawa-Flynn-Wall, Kissinger-Akahira-Sunuse, Distributed activation, and Starink, were employed to investigate the kinetics and thermodynamic parameters. The mean activation energy (<i>E</i><i><sub>α</sub></i>), and pre-exponential factor (<i>k<sub>o</sub></i>) varied between 222.67 and 244.73 kJ mol<sup>-1</sup> and 6.82×10<sup>21</sup> and 2.73×10<sup>24</sup> s<sup>-1 </sup>respectively, for all iso-conversional approaches. From the kinetic investigation, a strong correlation co-efficient (R<sup>2</sup>>0.97) was ascertained in the conversion range of up to α=0.8 for all the iso-conversational approaches. By thermodynamic analysis, the mean values of change in enthalpy and change in Gibbs free energy were 217.06-239.13 kJ mol<sup>-1 </sup>and 185.12-218.11, kJ mol<sup>-1</sup>, respectively. From the master plot analysis, diffusion model (D3), and several reaction order models (F1, F2, F3, and F5) were predicted throughout the conversion (0.1 to 0.8) limit at 20 °C min<sup>-1</sup> for the pyrolysis of BRT.
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