We need
aluminum (for those of you in the UK, it’s aluminium). Lots of it. It is a
light and strong metal. To make new aluminum, you begin with bauxite ore, and
use a lot of electricity. But to recycle aluminum, you start with aluminum, and
use ten times less electricity than
it takes to make it from bauxite.
In
addition to the energy used to refine bauxite into aluminum, there is also the
fact that the largest bauxite reserves are in countries that often have low
industrial capacity and do not use very much aluminum. They are small countries
that would not be able to put up much resistance if a country like the USA told
them we wanted their bauxite. The largest reserves (7.4 billion metric tons)
are in Guinea, a small poor African nation. Brazil has 3.6, Vietnam 2.1, and
Jamaica 2.0 billion metric tons. The only significant industrial power with
large bauxite deposits is Brazil, with 3.6 billion metric tons. Industrial
countries have far less: China has 0.8, Russia has 0.2, and the USA has only 0.04
billion metric tons of bauxite reserves.
Our
extravagant use of raw aluminum, while throwing used aluminum into landfills,
makes economic sense only because we can get new aluminum from smaller
countries. What if these countries decided to charge more money for it, or
preferred to sell the bauxite to one of our competitors, such as China? Would
we go to war for bauxite rather than to recycle what we already have? I wonder
how many Americans are lazy and selfish enough that they would prefer to see an
aluminum war rather than to take a few extra moments and a few extra steps to
recycle aluminum cans? Half of our federal budget is for the military. How many
Americans consider half of our tax money (and the money we borrow from other
places), and the lives of our fellow Americans in the military, to be
expendable so that we can throw whatever we like in the garbage? Go ahead. Next
time you see a soldier, tell her or him that you would rather see them engaged
in open conflict than for you to recycle, then tell yourself what a patriot you
are.
There
are a lot of rare and expensive metals in cell phones. One
example is gold. At present, it is cheaper to mine gold from ore than it is to
recycle it from electronic equipment. But that is only because, first, we
ignore the environmental costs of gold mining, such as at the big mine in
Australia shown in the figure, and second, we assume that we will never run out
of ore. It is easy (in most places) to recycle old cell phones; electronics
stores have receptacles for them, and some will even pay you for them. But
Americans prefer to throw them away: ninety percent of them. Would we, perhaps,
be willing to go to war for gold rather than to recycle it?
Some of
those elements you heard about in high school chemistry actually have some very
important uses. Praseodymium, for example, is a component of metal used in
aircraft engines. Cerium is used as a catalyst to refine petroleum. Lanthanum
is used in carbon arc lights such as those used in projectors. Neodymium is
used in welders’ goggles. Samarium is part of the crystals used in optical
lasers, and absorbs neutrons in nuclear reactors. Gadolinium is used in color
picture tubes and magnetic resonance imaging. These are highly specialized but
very important uses.
The
reason I chose these particular metals is that Afghanistan has raw ores for
these metals—a trillion dollars’ worth.
Though
not a chemist, I can imagine that recycling these metals must be difficult,
much more so than recycling aluminum. Imagine getting neodymium out of old
welder’s goggles. At what point does it become cost-effective to recycle rare
metals? The answer depends, of course, on the availability of raw ores for
these metals. If Afghanistan will allow American corporations to mine their
ores, and let us do so for cheap, then our industrial and political leaders
will probably choose to use new, rather than recycled, rare metals.
But
Afghanistan seems to be continually at war; America has had a very active and
expensive military presence since 2002. When industrial leaders make their
calculations for investing in rare metal mining in Afghanistan, they assume
that American military presence will be available to protect them for free,
that is, at taxpayer expense.
And, of
course, our economic competitors such as China want these metals too.
This
brings up the uncomfortable possibility that America might be willing to go to
war for raw ores of these important rare metals rather than recycling them. We
may choose to go ahead and throw away all those metals and, if we start to run
out of them, just go to war and take what we need. As any black or Native
American can tell you, American history consists largely of the white American
government and economic leaders benefiting from the forced labor of, or taking
land and all its resources away from, people of color. I am not suggesting that
our current Afghan war is motivated by the desire for these metals at this
time. One the other hand, maybe it is, or will soon be.
A war
for raw mineral ores can be avoided by recycling, which is very easy to do for
aluminum, very difficult to do for neodymium, but always possible.
Recycling
is the right thing to do for world peace.
No comments:
Post a Comment