The recycled plastics are obtained from a series of recycling
operations such as sorting, shredding, washing, water treatment,
drying and extrusion to produce recycled plastic pellets. Polypropylene,
one of the prominent industrial wastes is taken for the study.
The material input for recycling operations include sodium hydroxide,
surfactants, lime and water. The plastic waste used as an input
also contains mud, dust, waste metals and other volatile waste
which contributed almost 25% of the input. The distance between
waste generation point to recycling centre is assumed to be 100 km
and transported using 7.5 t Euro 3 lorry. The other energy consumptions
included in the recycling operations are mainly from washing,
drying and extrusion.