Polymer, metal removal composition, and method of removing metal ions

Patent metadata

Field	Value
Publication number	US-11472961-B2
Application number	US-202016840591-A
Country	US
Kind code	B2
Filing date	Apr 6, 2020
Priority date	Feb 4, 2020
Publication date	Oct 18, 2022
Grant date	Oct 18, 2022

Abstract

A method of removing metal ions is provided, which includes contacting a metal removal composition with a solution containing metal ions for removing the metal ions from the solution, wherein the metal removal composition includes a polymer with a chemical structure of:wherein Q is a quinoline-based group, n=90˜450, o=10˜50, and p=0˜20. The metal removal composition has a type of fiber or film. In addition, the metal removal composition has a porosity of 60% to 90%.

First claim

What is claimed is:

1. A polymer, having a chemical structure of:

wherein Q is quinoline-based group,
n=90˜450,
o=10˜50, and
p=0˜20.

2. The polymer as claimed in claim 1 , wherein Q is

wherein * is connected to O of side sulfonate group of the polymer.

3. A metal removal composition, comprising:
a polymer, having a chemical structure of:

wherein Q is a quinoline-based group,
n=90˜450,
o=10˜50, and
p=0˜20.

4. The metal removal composition as claimed in claim 3 , further comprising polyether sulfone, sulfonated polyether sulfone, or a combination thereof, and (1) polymer and (2) polyether sulfone, sulfonated polyether sulfone, or a combination thereof have a weight ratio of 100:0 to 100:300.

5. The metal removal composition as claimed in claim 3 , having a type of fiber that has a diameter of 100 micrometers to 600 micrometers.

6. The metal removal composition as claimed in claim 3 , having a type of film that has a thickness of 20 micrometers to 60 micrometers.

7. The metal removal composition as claimed in claim 3 , further comprising water soluble polymer to serve as a porogen, and the water soluble polymer includes at least one of polyvinyl pyrrolidone, polyvinyl alcohol, or polyethylene glycol.

8. The metal removal composition as claimed in claim 3 , having a porosity of 60% to 90%.

9. A method of removing metal ions, comprising:
contacting a metal removal composition with a solution containing metal ions for removing the metal ions from the solution,
wherein the metal removal composition includes a polymer with a chemical structure of:

wherein Q is a quinoline-based group,
n=90˜450,
o=10˜50, and
p=0˜20.

10. The method as claimed in claim 9 , wherein the metal removal composition further comprising at least one of polyether sulfone, sulfonated polyether sulfone, or a combination thereof, and (1) polymer and (2) polyether sulfone, sulfonated polyether sulfone, or a combination thereof have a weight ratio of 100:0 to 100:300.

11. The method as claimed in claim 9 , wherein the metal removal composition has a type of fiber or film.

12. The method as claimed in claim 9 , wherein the metal ions comprise at least one of iron ions, lead ions, mercury ions, cobalt ions, or cadmium ions.

Assignees

• Ind Tech Res Inst

Inventors

• Tsai Min-Fei
• Tsai Feng-Jen
• Chen Ping-Yen
• Li Yen-Cheng
• Chung Li-Han

Classifications

• C08L2203/12

  used for fibers · CPC title

• C08L39/06

  Homopolymers or copolymers of N-vinyl-pyrrolidones · CPC title

• C08G75/23 Primary

  Polyethersulfones · CPC title

• C08J9/0061

  characterized by the use of several polymeric components · CPC title

• C02F1/62

  Heavy metal compounds · CPC title