The pyrolysis of oil shale and plastic wastes is being presently considered as an alternative means of partial substitution
of fossil fuels to generate the necessary energy to supply the increasing energy demand and as well as new technology to reduce
the negative environment of plastic wastes. However, Knowledge of pyrolysis kinetics is of great imponrtance for the design
and simulation of the reactor and in order to establish the optimum process conditions.
In this study, the thermal decomposition of polypropylene, oil shale and their mixture was studied by TG under a nitrogen
atmosphere. Experiments were carried out for various heating rates (2, 10, 20, 50 K min−1) in the temperature range 300–1273 K. The values of the obtained activation energies are 207 kJ mol−1 for polyethylene, 57 kJ mol−1 for the organic matter contained in the oil shale and 174 kJ mol−1 for the mixture. The results indicate that the decomposition of these materials depends on the heating rate, and that polypropylene
acts as catalyst in the degradation of the oil shale in the mixture.