Modeling of the co-pyrolysis of rubber residual and HDPE waste using the distributed activation energy model (DAEM)
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The kinetic analysis for rubber residual i.e. rubber seed shell, high density polyethylene (HDPE) waste and its mixture are investigated using distributed activation energy model (DAEM) reaction model. Furthermore, the pyrolysis characteristics from these materials are investigated by non-isothermal thermogravimetric analysis from temperature 323 K to 1173 K at varying heating rates range of 10–200 K/min in inert argon atmosphere. The average value determined for activation energy, Eaand pre-exponential factor, k0are 54.888 kJ mol-1and 6.923 × 104s-1respectively for RSS, 75.396 kJ mol-1and 1.346 × 106s-1respectively for HDPE and 64.010 kJ mol-1and 8.444 × 104s-1respectively for binary mixture of RSS/HDPE. By taking these values as the initial guess for Gaussian distribution, and assuming the standard deviation, s is at 15 kJ mol-1, as well as constant k0value for all first order reactions, the mean activation energy, E0determined from the distribution curve for RSS, HDPE and RSS/HDPE are 55.0 kJ mol-1, 75.5 kJ mol-1and 64.0 kJ mol-1respectively. The values of E0and k0in pyrolysis of binary mixture of RSS/HDPE are found to be lower compared to the individual component of RSS and HDPE in pyrolysis process.
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