Electrolytic process: Definition from Answers.com

An electrolytic process is the use of electrolysis industrially to refine metals or compounds at a high purity and low cost. Some examples are the Hall-Héroult process used for aluminium, or the production of hydrogen from water. Electrolysis is usually done in bulk using hundreds of sheets of metal connected to an electric power source. In the production of copper, these pure sheets of copper are used as starter material for the cathodes, and are then lowered into a solution such as copper sulfate with the large anodes that are cast from impure (97% pure) copper. The copper from the anodes are electroplated on to the cathodes, while any inpurities settle to the bottom of the tank. This forms cathodes of 99.999% pure copper.

v • d • e Articles related to electrolysis

Principles of electrolysis	Electrochemical cell • Electrolytic process • Faraday's laws of electrolysis • Half cell • High-temperature electrolysis • High pressure electrolysis • Regenerative fuel cell • Solid oxide electrolyser cell • Unitized regenerative fuel cell • Standard electrode potential

Electrolytic processes	Betts electrolytic process • Castner process • Castner-Kellner process • Chloralkali process • Downs cell • Electrolysis of water • Electrowinning • Hall-Héroult process • Hofmann voltameter • Kolbe electrolysis

Materials produced by electrolysis	Aluminium • Calcium metal • Chlorine • Copper • Electrolysed water • Fluorine • Hydrogen • Lithium metal • Magnesium • Potassium metal • Sodium metal • Sodium hydroxide • Zinc

See also	Electrochemistry • Standard electrode potential (data page)

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Electrolytic process

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