When we recharge our phone credit, we scratch the airtime cards and feed-in the combination of the digits available. what we scratch is a lead compound-plus other compounds. As we already know, lead is a heavy metal and a dangerous one. This contributes lead to the environment.
Yes it has. Please follow Greenpeace publications on electronic waste.
Dear Mr. Ndwiga,
if you build a cellular phone you be in need of medium-REE, Coltan (Nb-Ta) and for the battery base metals and alkaline elements. Indeed, it is not very much in one device but increasing by the number you will have also increase the amount of metals. It is mainly the so-called electronic metal sector which counts. The classical elements you mentioned above I would rank very high in relation to the group of elements I have referred to.
See: DILL, H.G. (2010) The “chessboard” classification scheme of mineral deposits: Mineralogy and geology from aluminum to zirconium.- Earth Science Reviews, 100: 1-420.
In this publication you will find under "supply and use" all what you need and by a link to the USGS database you can up-date your figures on an annual basis.
Good luck!
Harald G. Dill
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