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Alkaline water electrolysis
Alkaline water electrolysis has a long history in the chemical industry. It is a type of electrolyzer that is characterized by having two electrodes operating in a liquid alkaline electrolyte solution of potassium hydroxide or sodium hydroxide. These electrodes are separated by a diaphragm, separating the product gases and transporting the hydrogen ions from one electrode to the other.〔(【引用サイトリンク】url=http://www.eolss.net/sample-chapters/c08/e3-13-03-02.pdf )〕
Electrolysis requires minerals to be present in solution, tap, well, and ground water contain various minerals which are both alkaline and acidic. Water above a pH of 7.0 is considered alkaline, below 7.0 it is acidic. Electrolysis can occur only if the water is acid or alkaline, the requirement is that there are ions in the water to conduct electricity for the water electrolysis process to occur.〔(【引用サイトリンク】url=http://water.usgs.gov/edu/electrical-conductivity.html )〕〔(【引用サイトリンク】url=http://www.newton.dep.anl.gov/askasci/chem07/chem07289.htm )〕
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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