granules from the industrial plastic wastes are 100% recycled into the polypropylene
fibers (Tuladhar and Yin 2019). Essential recycling is also called re-expulsion,
which means re-modeling the waste materials into a new shape. Different methods
of plastic moulding into its original shape, or giving the new version of the used
plastics having the same characteristics. In the United Kingdom, about 250,000 tons
Industrial Plastic
Waste Collection
Sorting: Manual,
Near Infrared,
X-ray Techniques
Shredding
Ballistic Separator
and Electrostatic
Sorting
Float-sink Sorting
of different Resin
types
Extrusion
Recycled
Propylene
Granules
Fig. 2.18 Mechanical reprocessing of industrial plastic wastes into propylene. This method gives
reliable quality control, and the polypropylene wastes are 100% recycled. (Modified from Tuladhar
and Yin 2019).
Fig. 2.19 Production of recycled plastic fiber by melt spinning. Recycled PP (polypropylene) are
extruded by extruder with a spinning pack and then cooled and solidified before forming crosssectional fibers in the oven and are further processed by indent roller and fiber cutter. (Reprinted
with permission of [Production of recycled polypropylene fibers from industrial plastic waste
through melt spinning process, Tuladhar et al., Attribution 3.0 Unported (CC by 3.0)] from
Tuladhar and Yin 2019)
2 Identification and Remediation of Plastics as Water Contaminant
77
fibers (Tuladhar and Yin 2019). Essential recycling is also called re-expulsion,
which means re-modeling the waste materials into a new shape. Different methods
of plastic moulding into its original shape, or giving the new version of the used
plastics having the same characteristics. In the United Kingdom, about 250,000 tons
Industrial Plastic
Waste Collection
Sorting: Manual,
Near Infrared,
X-ray Techniques
Shredding
Ballistic Separator
and Electrostatic
Sorting
Float-sink Sorting
of different Resin
types
Extrusion
Recycled
Propylene
Granules
Fig. 2.18 Mechanical reprocessing of industrial plastic wastes into propylene. This method gives
reliable quality control, and the polypropylene wastes are 100% recycled. (Modified from Tuladhar
and Yin 2019).
Fig. 2.19 Production of recycled plastic fiber by melt spinning. Recycled PP (polypropylene) are
extruded by extruder with a spinning pack and then cooled and solidified before forming crosssectional fibers in the oven and are further processed by indent roller and fiber cutter. (Reprinted
with permission of [Production of recycled polypropylene fibers from industrial plastic waste
through melt spinning process, Tuladhar et al., Attribution 3.0 Unported (CC by 3.0)] from
Tuladhar and Yin 2019)
2 Identification and Remediation of Plastics as Water Contaminant
77