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Mercury Reduction in the Chlor-alkali Sector

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.

Partnership Priority Actions

  • Encourage and implement use of Best Available Techniques (BAT) / Best Environmental Practices (BEP) in existing mercury-cell facilities.
  • Improve awareness and information exchange on non-mercury technologies in chlor-alkali production.
  • Work with partner governments to establish effective regulatory and/or voluntary approaches to minimize and where feasible eliminate mercury use and releases from the chlor-alkali sector and to prevent new mercury cell facility construction or expansion, including consideration of national action plans for conversion.
  • Develop and share information/best practices for managing surplus mercury generated by conversion, phase-out, and closure of mercury-cell chlor-alkali production facilities.
Partnership Area Leads What's New

Lead: Mr. Rodges Ankrah 
US Environmental Agency Protection

Co-lead: Mr. Riccardo Savigliano

Chlor Alkali Experts Group Meeting 2016

            Meeting Report

World Chlorine Council Mercury Information Page

World Chlorine Council Report to UNEP on Chlor-Alkali Partnership-Data 2015.pdf

UNEP Survey.doc on Non WCC members.docx and Country responses.doc