Process for reduction of inorganic contaminants from waste streams
AssigneesMAR Systems, Inc., The United States of America as represented by the Administration of the U.S. Environmental Protection Agency
InventorsClaude Kennard, Michael A. Gonzalez, David C. Szlag
Life of this patent
Estimating the term…
Abstract
The invention relates to the use of used alumina to reduce the level of inorganic contaminants, such as mercury and arsenic, from waste fluid streams. The invention further provides a process for reducing the level of mercury or arsenic in fluid streams by contacting the fluid stream with used alumina, such as used Claus catalyst.
Claims18
A process for reducing the level of arsenic from an aqueous liquid stream comprising contacting said liquid stream with used Claus catalyst.
A process for reducing the level of arsenic from an aqueous liquid stream containing arsenic, comprising the steps of:
- (a) flowing the aqueous liquid stream through a bed containing a used Claus catalyst sorbent;
- (b) sorbing arsenic from the aqueous liquid stream onto the surface of the sorbent;
- and
- (c) allowing the arsenic-depleted effluent stream to exit from the outlet of the bed.
Dependencies are inferred from the claim text.