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US 9,868,650 B2Granted
Method for removing glyphosate from a solution using functionalized polymeric nanoparticles
AssigneeInternational Business Machines Corporation
InventorsRobert D. Allen, Geraud J. Dubois, Young-Hye Na, Lianna C. Samuel, Joseph Sly, Ran Wang
Life of this patent
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Abstract
A method for removing glyphosate from a solution by contacting the solution with a polymeric particle including a moiety selected from the group consisting of ammonium, amine and combinations thereof, wherein the moiety is positively charged in the solution.
Claims14
A method comprising removing glyphosate from a solution by contacting the solution with polymeric particles
- having the following chemical structure:
- wherein the linking group (L) is selected from the group consisting of alkyl, aryl, alkenyl, and combinations thereof;
- X is selected from the group consisting of positively charged ammonium moieties and their precursors;
- k is 6 or more, n is 1 or more, and a is 2 or more.
1 more element
A method for removing glyphosate from an aqueous solution, comprising:
- (a) adding an amine-functionalized polymeric particles into the aqueous solution containing glyphosate, wherein the polymeric particles has the following chemical structure:
- wherein the linking group (L) is selected from the group consisting of alkyl, aryl, alkenyl, and combinations thereof;
- X is selected from the group consisting of positively charged ammonium moieties and their precursors;
- k is 6 or more, n is 1 or more, and a is 2 or more;
- and
- (b) filtering to remove from the aqueous solution a complex comprising the amine-functionalized polymeric particles having glyphosate adsorbed thereon, and residual amine-functionalized particles.
3 more elements
A system, comprising:
- a filtration column comprising a packing, the packing comprising polymeric particles with the following chemical structure:
- wherein the linking group (L) is selected from the group consisting of alkyl, aryl, alkenyl and combinations thereof;
- X is selected from the group consisting of positively charged ammonium moieties and their precursors;
- k is 6 or more, n is 1 or more, and a is 2 or more;
- and
- a source providing an aqueous solution to the filtration column, wherein the aqueous solution contacts the packing, and wherein the aqueous solution comprises greater than zero and less than about 5 ppm glyphosate.
3 more elements
A system, comprising:
- a filter comprising polymeric particles with the following chemical structure:
- wherein the linking group (L) is selected from the group consisting of alkyl, aryl, alkenyl and combinations thereof;
- X is selected from the group consisting of positively charged ammonium moieties and their precursors;
- k is 6 or more, n is 1 or more, and a is 2 or more;
- and
- a source providing an aqueous solution to the filter, wherein the aqueous solution contacts the filter, and wherein the aqueous solution comprises greater than zero and less than about 5 ppm glyphosate.
3 more elements
Dependencies are inferred from the claim text.