1996 Electronics Industry Environmental Roadmap - Civil and ...
1996 Electronics Industry Environmental Roadmap - Civil and ...
1996 Electronics Industry Environmental Roadmap - Civil and ...
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Appendix I. Composition of Typical Desktop Computer System<br />
Appendix I<br />
A breakdown of the composition of a typical desktop computer system (~70 lbs.) from H<strong>and</strong>y &<br />
Harman reveals that the plastics content is the highest value <strong>and</strong> the least recovered [one Troy<br />
Ounce (T.O.) = 1.097 Ounces].<br />
Name<br />
Content<br />
(%)<br />
Value<br />
($/T.O.)<br />
Intrinsic<br />
Value<br />
Recycl.<br />
Effic.<br />
Value of Value of<br />
Recycled Nonrecycled<br />
Use/Location<br />
Plastics 22.9907 0.05 $11.73 20% $2.35 $9.39 includes organics, oxides other than silica<br />
Lead 6.2988 0.03 $1.93 5% $0.10 $1.83 metal joining, radiation shield/CRT, PWB<br />
Aluminum 14.1723 0.06 $9.11 80% $7.29 $1.82<br />
structural, conductivity/housing, CRT, PWB,<br />
connectors<br />
Germanium 0.0016 93.00 $1.49 0% $0.00 $1.49 semiconductor/PWB<br />
Gallium 0.0013 90.00 $1.15 0% $0.00 $1.16 semiconductor/PWB<br />
Iron 20.4712 0.02 $4.18 80% $3.34 $0.84 structural, magnetivity/(steel) housing, CRT, PWB<br />
Tin 1.0078 0.20 $2.06 70% $1.44 $0.62 metal joining/PWB, CRT<br />
Copper 6.9287 0.09 $6.01 90% $5.41 $0.60 conductivity/CRT, PWB, connectors<br />
Barium 0.0315 1.35 $0.43 0% $0.00 $0.43 getter in vacuum tube/CRT<br />
Nickel 0.8503 0.25 $2.17 80% $1.74 $0.43 structural, magnetivity/(steel) housing, CRT, PWB<br />
Zinc 2.2046 0.04 $0.81 60% $0.49 $0.32 battery, phosphor emitter/PWB, CRT<br />
Tantalum 0.0157 1.71 $0.27 0% $0.00 $0.27 capacitors/PWB, power supply<br />
Indium 0.0016 30.00 $0.48 60% $0.29 $0.19 transistor, rectifiers/PWB<br />
Vanadium 0.0002 100.00 $0.16 0% $0.00 $0.16 red phosphor emitter/CRT<br />
Terbium 0.0000 933.00 $0.15 0% $0.00 $0.15 green phosphor activator, dopant/CRT, PWB<br />
Beryllium 0.0157 0.40 $0.06 0% $0.00 $0.06 thermal conductivity/PWB, connectors<br />
Gold 0.0016 390.00 $6.27 99% $6.21 $0.06 connectivity, conductivity/PWB, connectors<br />
Europium 0.0002 35.00 $0.06 0% $0.00 $0.06 phosphor activator/CRT<br />
Titanium 0.0157 0.30 $0.05 0% $0.00 $0.05 pigment, alloying agent/(aluminum) housing<br />
Ruthenium 0.0016 15.00 $0.24 80% $0.19 $0.05 resistive circuit/PWB<br />
Cobalt 0.0157 1.75 $0.28 85% $0.24 $0.04 structural, magnetivity/(steel) housing, CRT, PWB<br />
Palladium 0.0003 173.00 $0.56 95% $0.53 $0.03 connectivity, conductivity/PWB, connectors<br />
Manganese 0.0315 0.07 $0.02 0% $0.00 $0.02 structural, magnetivity/(steel) housing, CRT, PWB<br />
Silver 0.0189 5.33 $1.03 98% $1.01 $0.02 conductivity/PWB, connectors<br />
Antimony 0.0094 0.19 $0.02 0% $0.00 $0.02 diodes/housing, PWB, CRT<br />
Bismuth 0.0063 0.26 $0.02 0% $0.00 $0.02 wetting agent in thick film/PWB<br />
Chromium 0.0063 0.25 $0.02 0% $0.00 $0.02 decorative, hardener/(steel) housing<br />
Cadmium 0.0094 0.14 $0.01 0% $0.00 $0.01<br />
battery, blue-green phosphor emitter/housing,<br />
PWB, CRT<br />
Selenium 0.0016 2.00 $0.03 70% $0.02 $0.01 rectifiers/PWB<br />
Niobium 0.0002 5.14 $0.01 0% $0.00 $0.01 welding allow/housing<br />
Yttrium 0.0002 5.00 $0.01 0% $0.00 $0.01 red phosphor emitter/CRT<br />
Rhodium 0.0000 650.00 $0.01 50% $0.01 $0.01 thick film conductor/PWB<br />
Platinum 0.0000 448.00 $0.07 95% $0.07 $0.00 thick film conductor/PWB<br />
Mercury 0.0022 0.09 $0.00 0% $0.00 $0.00 batteries, switches/housing, PWB<br />
Arsenic 0.0013 0.00 $0.00 0% $0.00 $0.00 doping agent in transistors/PWB<br />
Silica 24.8803 0.00 $0.00 0% $0.00 $0.00 glass, solid state devices/CRT, PWB<br />
Subtotals $50.92 $30.71 $20.21<br />
249
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