66
Discarded electrical
appliance
Stage 1: Dismantling of
electronic waste
Unrecyclable and impurities
Polychlorinated biphenyl
materials
Recyclable materials
Old and unusable devices
Metals
Plastics
Refurbishing and reuse
Circuit
elements
Boards
Recycling
Disposal
Fig. 4.1 Schematic diagram of global Electronic-waste separation and recycling strategies. (Hai
et al. 2017)
Acrylonitrile
butadiene
styrene
(ABS)
High
impact
polystyrene
(HIPS)
Acrylonitrile
ButadieneStyrene
(ABS)
Polyphenylene
oxide
(PPO)
Polycarbon
ate (PC)
Polyvinyl
chloride
(PVC)
Polymethyl
methacrylate
(PMMA)
Polypropylene
(PP)
Computer (%)
34.5
10.2
29.8
11.6
4 .5
4.9
0
0
Fans (%)
7
34.9
0
19
11.7
0
12.4
58.1
Stereos (%)
5.8
27.7
0
5.2
0
1.5
1 .9
0
TV and screen panels (%)
13.7
73.3
0
0
11.8
3 .7
0
2 .2
Vacuum cleaner (%)
48
14.2
0
0
23.5
20.1
52.9
0
0
10
20
30
40
50
60
70
80
Recylable %
Plastic composition by type in various electronic wastes
Fig. 4.2 Plastic composition by type in various Electronic-wastes. (Hester and Harrison 2009)
M. Aboughaly and H. A. Gabbar