Definition of Solvay process in US English:

Solvay process


  • An industrial process for obtaining sodium carbonate from limestone, ammonia, and brine.

    • ‘The Solvay process is exothermic, so waste water must be cooled before it is returned to rivers or ocean.’
    • ‘In the Solvay process, carbon dioxide and ammonia are passed into a concentrated solution of sodium chloride.’
    • ‘Were it not for the recycling of ammonia, the Solvay process would be economically impractical.’
    • ‘In the Solvay process, ammonia and carbon dioxide are used to produce sodium carbonate from salt and limestone.’
    • ‘Another object of the invention is to modify the Solvay process to eliminate the production of calcium chloride.’


Late 19th century: named after Ernest Solvay (1838–1922), Belgian chemist.


Solvay process

/ˈsälvā ˌpräses/