Vol 2 _1_ - Cont. J Water, Air and Soil Pollution - Wilolud Journals

Ukpong, E. C and Peter, Chamberlain M Continental J. Water, Air and Soil Pollution 2 (1): 31 – 41, 2011Methods of Recycling PolytheneThe following procedures of recycling polythene materials were adopted;(i) Inspection – polythene wastes are inspected for contaminants such as rock and glass and for materialsthat the plant cannot recycle.(ii) Chopping and washing – the polythene wastes are washed and chopped into flakes using the washingmachine as shown in Figure 1.Fig. 1: Washing Machine(iii)Flotation tank – If mixed polythene are being recycled, they are sorted in flotation tank, where sometypes of polythene sink and other float. The floatation units are shown in Figure 2a and Fig 2brespectively.Fig. 2(a) Floatation Unit Fig. 2 (b) Floatation Unit(iv)Drying – The polythene flakes are then dried in a tumble drier as in Figure3.34