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US 2011/0297616 A1Published application
Selenium removal methods and systems
AssigneeConocoPhillips Company
InventorsMark Hughes, Roland Schmidt, Joseph B. Cross
Life of this patent
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Abstract
Described herein is a cost effective means for selenium recovery and refining relying on an impregnated substrate. The substrate is impregnated with selenium and provides a system and method for the environmentally safe discharge of previous selenium-contaminated solutions and an environmentally safe discharge of industrial waste water.
Claims20
A method comprising:
- preparing a selenium-laden substrate, wherein the substrate is initially laden with selenium at an elevated temperature greater than 200° C.;
- and
- introducing the substrate to a solution containing selenium for removing the selenium from the solution, wherein the solution is in-line with a process system and has a pH less than about 10.
A selenium removal system comprising:
- a selenium-laden substrate, wherein the substrate is initially laden with selenium at an elevated temperature greater than 200° C. and is in-line with a process system;
- and
- an aqueous solution containing selenium, the solution having a pH less than about 10, wherein the aqueous solution passes through the selenium-laden substrate and selenium is thereby removed from the solution while in line with the process system.
Dependencies are inferred from the claim text.