USE OF ZEOLITIC MATERIALS FOR REMOVING MERCURY (+2) IONS FROM LIQUID STREAMS

摘要

A process for removing Hg2+ ions from a liquid stream is disclosed. The process involves contacting the liquid stream with specified UOP Zeolitic Materials. These molecular sieves are particularly effective in removing Hg2+ ions from aqueous streams even in the presence of Mg2+ and Ca2+ ions. The effective molecular sieves have an intermediate range of Si/Al ratios between about 2 and 20 and preferably between 3 and 10.

主权项

1. A process for removing Hg2+ contaminant from a liquid streams comprising contacting the stream with a molecular sieve for a time sufficient to adsorb the Hg2+ contaminant onto the molecular sieve, the molecular sieve characterized in that it comprises one or more zeolitic materials selected from the group consisting of UZM-4, UZM-5, UZM-7, UZM-8, UZM-9, UZM-10, UZM-12, UZM-14, UZM-15, UZM-16, UZM-22, UZM-25, UZM-26, UZM-27, UZM-35, UZM-37 and UZM-45.