Source Euro Chlor
The mercury-cell process is one of three manufacturing processes used by the chlor-alkali sector to produce chlorine and caustic soda. Mercury-cell chlor-alkali production remains a significant use of mercury globally and can be a significant source of mercury releases to the environment. Mercury-cell facilities which close or convert to non-mercury technologies require careful site management as well as management of any excess mercury.
According to data compiled by the Global Mercury Partnership, some 100 facilities in 44 nations today have some industrial mercury-cell chlorine capacity. After accounting for pledges and plans for future closure in the European Union, India and the United States of America, 55 plants still remain in 24 countries.