Back to results
US 8,709,255 B2Granted
Selenium removal methods and systems
AssigneePhillips 66 Company
InventorsMark A. Hughes, Roland Schmidt, Joseph B. Cross
Life of this patent
Estimating the term…
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.