According to the lists of plastic waste recycling plants supplied
by the Taiwan EPA and Ministry of Economic Affairs, this study
analyzed ten large recycling plants providing different phases of
plastic waste recycling. The descriptions of the sampling plants
and analyzed air pollutants were summarized in Table 1. These
plants included two waste collection and sorting plants, four
shredding plants (particularly for PET) and four melting and powdering
plants (for PE, PP and PVC). Plastic waste is first sorted in
collection plants according to kinds of plastic material then passed
to downstream plants for compression and shredding (shredding
plants) before final delivery to the next downstream plants for
melting and powdering (Melting & powdering plants). Only the
PET plastic waste is material recycled without melting and powdering
processes.