E-waste collection
Electronics are usually
collected from individuals and organizations. To make collection easy,
the individuals are supplied with bins where they are supposed to put
the wastes. To further make collection easy, each of the waste is
supposed to be placed in its own bin.For example,end of life computers
are placed in their own bins and fluorescent bulbs in their own bins.
Once the bins are full,the individuals or organization notify the
recycling company which picks the waste.
Shredding
Once
the items to be shredded have been delivered from the collection
points, they are removed from the trucks and put in the store.If the
items need to be shredded immediately, they are removed by hand and put
in the conveyor line. Common electronics that need to be shred include:
end of life batteries, toner cartridges, UPS battery, computers and
fluorescent lights.
Once the e-waste has been picked by hand and
placed in the conveyor line, the waste flows into the shredding line. If
there are hard drives in the materials, secure hard drive shredding is
done. There are two main shredders that are used in shredding: main
shredder and final shredder. The main shredder breaks the material into
4" by 10" fragments. Once the materials have been fragmented, they flow
to the final shredder that further reduces them into poker chip-sized
fragments.
Separation
Once all the
materials have been shredded in minute fragments, they enter separation
lines. Here the materials are segregated depending on their nature.
Sophisticated technologies are used to separate the materials. Some of
the technologies used include: magnetic separation, optical
identification and eddy currents. At the initial stages of separation
plastics and metals are separated from the waste. In the second stage
the different metal varieties are separated.
Output
Common
commodities recovered from e-waste are plastics,steel,PC board,
aluminum,and CRT glass.All these commodities are usually of varying
grades and types.Once all the materials have been adequately shredded
and separated,they are usually sold to manufacturers and producers who
use them for various purposes.For example,you computer's steel may be
used in manufacturing a car.
Benefits of recycling
Recycling
of raw material from end-of-life electronics aids in solving the
growing e-waste problem. This is because the materials are not stacked
in dust bins thus polluting the environment.The other benefit is that it
aids in conserving natural resources.This is because once the materials
are recycled,they provide the necessary raw materials for industries
therefore there is no need for mining.Recycling also reduces greenhouse
gas emissions that are usually produced during the manufacture of new
products.This further plays a role in minimizing pollution.
Conclusion
Although,
most of end-of-life materials are shredded to provide the required raw
materials,there are some materials that are usually in good conditions
and they can't be destroyed. These materials are usually donated to
people who might be in need of them. Common donations are laptop and
computer donations.Cell phone donations are also made although to a
small extent.
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