Aluminum Reduction

Chemical Formula: Al, AlO2
Present as: cation, anion

Aluminium or aluminum (in North American English) is a chemical element in the boron group with symbol Al and atomic number 13. It is a silvery-white, soft, nonmagnetic, ductile metal. Aluminium is the third most abundant element in the Earth’s crust (after oxygen and silicon) and its most abundant metal.
Aluminium makes up about 8% of the crust by mass, though it is less common in the mantle below. Aluminium metal is so chemically reactive that native specimens are rare and limited to extreme reducing environments. Instead, it is found combined in over 270 different minerals. The chief ore of aluminium is bauxite.
Despite its prevalence in the environment, no known form of life uses aluminium salts metabolically, but aluminium is well tolerated by plants and animals. Because of their abundance, the potential for a biological role is of continuing interest and studies continue.Aluminium is remarkable for its low density and its ability to resist corrosion through the phenomenon of passivation. Aluminium is most famously used in aluminum foil and aluminum baking dishes. However, its alloys are vital to the aerospace industry and important in transportation and structures, such as building facades and window frames. Aluminum is a relatively good electrical conductor. The oxides and sulfates are the most useful compounds of aluminium. Aluminum salts such as alum (aluminum sulfate) are widely used as coagulants in the treatment of potable water.

Phosphoric acid is not completely ionized allowing for a few ion exchange reactions to be used. Modest amounts of aluminum can be removed from relatively concentrated solutions and effectively removed using sulfuric acid.

Aluminum in drinking water is often present as a suspended solid rather than as an ion.

Aluminate is a common source of aluminum used as a coagulant in water treatment.

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Media Sub Category Strong Acid Cation
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- Demineralization
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CG10-H

Media Sub Category Strong Acid Cation
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CG8-H

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CG8

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