Detection and removal of selenate from aqueous solution
AssigneeCase Western Reserve University
InventorsDaniel A. Scherson, Jonathan Strobl
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Abstract
Systems and methods for detecting and/or removing selenate from an aqueous selenate-containing solution are described. The method includes adding sufficient acid to the aqueous selenate-containing solution to acidify the aqueous selenate-containing solution; contacting the acidic aqueous selenate-containing solution with an underpotantial deposited copper-coated electrode; and removing selenate from the aqueous selenate-containing solution by forming copper-selenide on the underpotential copper-coated electrode.
Claims22
A method for removing selenate from an aqueous selenate-containing solution, comprising the steps of:
- adding sufficient acid to the aqueous selenate-containing solution to acidify the aqueous selenate-containing solution;
- contacting the acidic aqueous selenate-containing solution with an underpotential copper-coated electrode;
- and
- removing selenate from the aqueous selenate-containing solution by forming copper-selenide on the underpotential copper-coated electrode.
A method for detecting selenate in an aqueous solution, comprising the steps of:
- adding sufficient acid to the aqueous solution to acidify the aqueous solution;
- contacting the acidic aqueous solution with an underpotential copper-coated electrode;
- and
- scanning the potential of the electrode above 1.0 V vs. RHE to determine if it is coated with copper selenide.
A system for detecting or removing selenate from an aqueous solution, comprising:
- a first container holding an acidic aqueous solution including selenate;
- an underpotential copper-coated electrode positioned in contact with the acidic aqueous solution including selenate;
- a counter electrode positioned in contact with the acidic aqueous solution including selenate;
- a RHE electrode positioned in contact with the acidic aqueous solution including selenate, and
- a voltage source connected to and capable of applying a voltage to the underpotential copper-coated electrode, wherein application of voltage to the copper-coated electrode converts the electrode to a copper-selenide-coated electrode.
Dependencies are inferred from the claim text.