Method and filter for removing nitrate ions
AssigneeGeneral Electric Company
InventorsHongchen Dong, Larry Neil Lewis, Stephen Robert Vasconcellos
Life of this patent
Estimating the term…
Abstract
A method for removing nitrate ions from a solution is presented. The method includes providing a polymer comprising a protonated amine moiety and an anion derived from an acid having a pKa value greater than about 1. The method further includes contacting the polymer with the solution to bind at least a portion of the nitrate ions in the solution with the polymer, and form a polymer-nitrate complex. The method furthermore includes separating at least a portion of the polymer-nitrate complex from the solution.
Claims20
A method for removing nitrate ions from a solution, comprising
- (i) providing a polymer comprising:
- a protonated amine moiety;
- and
- an anion derived from an acid having a pKa value greater than about 1;
- (ii) contacting the polymer with the solution to bind at least a portion of the nitrate ions in the solution with the polymer, and form a polymer-nitrate complex;
- and
- (iii) separating at least a portion of the polymer-nitrate complex from the solution.
A method for removing nitrate ions from a solution, comprising
- (ii) providing a polymer comprising:
- a protonated amine moiety;
- and
- an anion derived from an acid having a pKa value greater than about 1;
- (ii) contacting the polymer with the solution to bind at least a portion of the nitrate ions in the solution with the polymer, and form a polymer-nitrate complex;
- (iii) separating at least a portion of the polymer-nitrate complex from the solution;
- and
- (iv) separating at least a portion of the nitrate ions from the polymer-nitrate complex to form a regenerated polymer.
A filter for removing nitrate ions from a solution, comprising a polymer comprising:
- a protonated amine moiety;
- and
- an anion derived from an acid having a pKa value greater than about 1.
Dependencies are inferred from the claim text.