2. Materials and methods
2.1. Materials
The plastic mixture used for the experiments was composed
of 40 wt% polyethylene, 35 wt% polypropilene, 18 wt% polystyrene,
4 wt% poly(ethylene terephthalate) and 3 wt% poly(vinyl chloride).
The origin and application of each plastic is showed in Table 1.
The proportions of the plastics in the mixture were established
based on the composition of real samples coming from packing and
packaging applications which were characterized by the authors in
a previous paper [25]. All the materials were used in pellet size
(3mm) for the pyrolysis experiments, while finely ground (<1mm)
samples were prepared for characterization purposes. The characterization
results of the plastic mixture are presented in Table 2.
ZSM-5zeolite, inNH4
+ cation form and with a SiO2/Al2O3 ratio of
50, was provided by Zeolist International. Red Mud was obtained
from a German alumina production company. Its composition is
presented in Table 3; it is mainly composed of Fe2O3 and Al2O3
การแปล กรุณารอสักครู่..
