![]() ![]() It also has excellent corrosion resistance so it can be used extensively. It is very light compared to other metals, has a high electrical conductivity, is non-toxic, and can be easily machined and formed. Īluminum has many valuable properties that allow it to be a widely used metal. ![]() High voltage power lines are made with steel-reinforced aluminum wires. Most cities have a metal recycling plant, which can be found online.įigure 2. The recycling process uses much less energy reprocessing the aluminum than was used to produce it, approximately 95% less energy. This intense energy use is why it is important to recycle used aluminum, in order to avoid the need for such drastic energy uses and carbon production. The worldwide primary energy consumption in 2014 was 532,980 PJ, meaning that 1.8% of the world's total primary energy supply went towards the production of aluminum.Īluminum production also has a considerable CO 2 footprint, at 8.24 kg of CO 2 per kg of aluminum extracted. In 2014, 49.3 billion kg of aluminum was produced - using the embodied energy of aluminum, this means that 9,367 PJ (9,367x10 15 joules) of energy was required for its extraction and processing. This is known as aluminum's embodied energy. The extraction of aluminum is extremely energy intensive it requires 190-230 megajoules of primary energy per kilogram of aluminum extracted and processed. Some properties of aluminum include: Atomic weight Aluminum was first extracted in 1825 by Hans Oersted, but it wasn't until the late 1880s when it became economically feasible to do so. This is called aluminum oxide, the natural resource that's mined for aluminum oxide is a mineral called bauxite. Aluminum is often found combined with oxygen. It is not found freely in nature, meaning that it is always found combined to other elements due to it being very reactive. Īluminum ( Al) also called aluminium is the 13 th element on the periodic table, and is the most abundant metal on Earth, making up 8.1% of the Earth's crust. Aluminum, atomic number of 13 and atomic weight of 26.9815. ![]()
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