Metal chelating composites, methods of using composites, and methods of making composites

Patent metadata

Field	Value
Publication number	US-10343143-B2
Application number	US-201715783117-A
Country	US
Kind code	B2
Filing date	Oct 13, 2017
Priority date	Aug 29, 2013
Publication date	Jul 9, 2019
Grant date	Jul 9, 2019

Abstract

Embodiments of the present disclosure provide for composites, methods of making composites, methods of removing a metal from a fluid, and the like.

First claim

We claim at least the following:

1. A method of removing a metal from a fluid, comprising:
exposing the fluid to a composite, wherein the composite is a support material having bonded to its surface a plurality of amine-rich macromolecules, wherein the amine-rich macromolecule is selected from the group consisting of: a polyamidoamine (PAMAM) dendrimer, and a polypropylenimine (PPI) dendrimer, and wherein the amine-rich macromolecules are bonded to the surface of the support material through hydrogen bonds, electrostatic interactions, or a combination thereof, wherein the support material is a metal oxide and the metal oxide is selected from the group consisting of: zirconia, titania, ceria, and zinc oxide;
chelating the metal to the composite to form a composite complex; and
separating the composite complex from the fluid.

2. The method of claim 1 , wherein the amine-rich macromolecule is the polyamidoamine (PAMAM) dendrimer, wherein the PAMAM dendrimer has an alkyl-diamine core and tertiary amine branches, wherein the alkyl-diamine core is selected from the group consisting of: ethylenediamine, 1,4-diaminobutane, 1,6-diaminohexane, and 1, 12-diaminododecane.

3. The method of claim 1 , wherein the amine-rich macromolecule is the polyamidoamine (PAMAM) dendrimer, wherein the PAMAM dendrimer is selected from the group consisting of: a first generation PAMAM dendrimer, a second generation PAMAM dendrimer, a third generation PAMAM dendrimer, a fourth generation PAMAM dendrimer, a fifth generation PAMAM dendrimer, a sixth generation PAMAM dendrimer, a seventh generation PAMAM dendrimer, and an eighth generation PAMAM dendrimer.

4. The method of claim 1 , wherein the amine-rich macromolecule is the polyamidoamine (PAMAM) dendrimer, wherein the PAMAM dendrimer is functionalized with additional functional moieties selected from the group consisting of: an imine, a hydroxyl, a succinamic acid, and a combination thereof.

5. The method of claim 1 , wherein the amine-rich macromolecule is a fourth generation polyamidoamine (PAMAM) dendrimer, wherein the PAMAM dendrimer has an ethylenediamine core and tertiary amine branches, and wherein the support material is titania.

6. The method of claim 1 , wherein the amine-rich macromolecule is a fourth generation polyamidoamine (PAMAM) dendrimer.

7. The method of claim 1 , wherein the amine-rich macromolecule is a PAMAM dendrimer having an ethylenediamine core and tertiary amine branches.

8. A method of removing a metal from a fluid, comprising:
exposing the fluid to a composite, wherein the composite is a support material having bonded to its surface a plurality of amine-rich macromolecules, wherein the amine-rich macromolecules are bonded to the surface of the support material through hydrogen bonds, electrostatic interactions, or a combination thereof, wherein the amine-rich macromolecule is a fourth generation polyamidoamine (PAMAM) dendrimer, wherein the PAMAM dendrimer has an ethylenediamine core and tertiary amine branches, and wherein the support material is titania;
chelating the metal to the composite to form a composite complex; and
separating the composite complex from the fluid.

9. The method of claim 8 , wherein the metal is a metal ion.

10. The method of claim 9 , wherein the metal ion is selected from the group consisting of: nickel ion, iron ion, cadmium ion, mercury ion, copper ion, tin ion, arsenic ion, selenium ion, chromium ion, platinum ion, palladium ion, rhodium ion, and lead ion.

11. The method of claim 8 , wherein the fluid is a waste fluid.

12. The method of claim 8 , wherein the fluid is a physiological fluid.

Assignees

• Kuhn John Norbert
• Woodcock Henry Lee
• Barakat Mohamed A
• Alghamdi Mansour A
• Alkhalaf Abdulrahman
• Univ South Florida
• Univ King Abdulaziz

Inventors

• Kuhn John Norbert
• Woodcock Henry Lee
• Barakat Mohamed A
• Alghamdi Mansour A
• Alkhalaf Abdulrahman

Classifications

• B01J20/3272

  Polymers obtained by reactions otherwise than involving only carbon to carbon unsaturated bonds · CPC title

• C02F2101/20

  Heavy metals or heavy metal compounds · CPC title

• C02F2103/365

  from petrochemical industry (e.g. refineries) · CPC title

• B01J20/262 Primary

  obtained otherwise than by reactions only involving carbon to carbon unsaturated bonds, e.g. obtained by polycondensation (macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds per se C08G) · CPC title

• B01J45/00

  Ion-exchange in which a complex or a chelate is formed; Use of material as complex or chelate forming ion-exchangers; Treatment of material for improving the complex or chelate forming ion-exchange properties (ion-exchange chromatography processes B01D15/36) · CPC title