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Hydrogen from brine electrolysis: A new approach

1989; Elsevier BV; Volume: 14; Issue: 9 Linguagem: Inglês

10.1016/0360-3199(89)90046-3

1879-3487

K. Tennakone,

Metal Extraction and Bioleaching

The electrolysis of brine yields chlorine, hydrogen and sodium hydroxide. In the conventional chlor-alkali industry, hydrogen is a by-product frequently burnt with chlorine to manufacture hydrochloric acid. It is suggested that the process can be made more advantageous if hydrogen is saved and chlorine is reacted with water (thermally or photocatalytically) in a second step to produce hydrochloric acid and oxygen. Large scale production of hydrogen by this method has several advantages. Vast quantities of sodium hydroxide may be necessary to control carbon dioxide emissions into the atmosphere from the burning of fossil fuels. Hydrochloric acid could replace sulphuric acid in the phosphate fertilizer industry.