Methods and systems for capturing and storing carbon dioxide

Patent metadata

Field	Value
Publication number	US-10456744-B2
Application number	US-201715423691-A
Country	US
Kind code	B2
Filing date	Feb 3, 2017
Priority date	Aug 8, 2011
Publication date	Oct 29, 2019
Grant date	Oct 29, 2019

Abstract

Methods and systems for capturing and storing carbon dioxide are disclosed. In some embodiments, the methods include the following: mixing materials including magnesium or calcium with one or more acids and chelating agents to form a magnesium or calcium-rich solvent; using the organic acids derived from biogenic wastes as acids or chelating agents; generating carbonate ions by reacting a gas including carbon dioxide with a carbonic anhydrase biocatalyst; reacting the solvent with the carbonate ions to form magnesium or calcium carbonates; recycling a solution containing the biocatalyst after forming magnesium or calcium carbonates for re-use in the generating step; using the magnesium and calcium carbonates as carbon neutral filler materials and using the silica product as green filler materials or inexpensive absorbents.

First claim

What is claimed is:

1. A method of capturing and storing carbon dioxide, said method comprising:
providing a dissolution reactor;
mixing materials including magnesium or calcium with one or more acids and catechol to form a magnesium or calcium-rich solvent in said dissolution reactor;
providing a combined biocatalyst and carbonation reactor in fluid communication with said dissolution reactor;
generating carbonate ions by reacting a gas including carbon dioxide with a biocatalyst in said biocatalyst and carbonation reactor;
providing the solvent to said biocatalyst and carbonation reactor; and
reacting said solvent with said carbonate ions to form magnesium or calcium carbonates in said biocatalyst and carbonation reactor.

2. The method according to claim 1 , further comprising:
recycling a solution containing said biocatalyst after forming said magnesium or calcium carbonates for re-use in said generating step.

3. The method according to claim 1 , wherein said biocatalyst is a carbonic anhydrase.

4. The method according to claim 3 , wherein said carbonic anhydrase is one of the enzymes Cam or Cab.

5. The method according to claim 3 , wherein said carbonic anhydrase is a whole cell that expresses one of the enzymes Cam or Cab.

6. The method according to claim 1 , wherein said magnesium or calcium materials include at least one of magnesium or calcium bearing minerals and industrial wastes.

7. The method according to claim 1 , wherein said magnesium or calcium carbonates are formed so as to mimic a particular structure of calcium carbonate.

8. The method according to claim 1 , wherein said silica product is formed so as to mimic a particular structure of precipitated silica or fume silica.

9. The method according to claim 1 , wherein said one or more acids is produced from biogenic wastes.

10. The method according to claim 1 , wherein a pH in said biocatalyst and carbonation reactor is from about 7.5 to about 10.

11. The method according to claim 1 , wherein a solid silica material having surface area greater than 200 m/g remains after magnesium is extracted from said minerals to form said solvent.

12. The method according to claim 1 , wherein said gas is one of a syngas produced from the gasification of carboneous fuel, a flue gas produced from combusting a carbonaceous fuel, a gas stream from steel manufacturing process, and a combination thereof.

13. A method of capturing and storing carbon dioxide, said method comprising:
providing a dissolution reactor;
mixing materials including magnesium or calcium with one or more acids and catechol to form a magnesium or calcium-rich solvent in said dissolution reactor;
providing a combined biocatalyst and carbonation reactor in fluid communication with said dissolution reactor;
generating carbonate ions by reacting a gas including carbon dioxide with a carbonic anhydrase biocatalyst in said biocatalyst and carbonation reactor;
reacting said solvent with said carbonate ions to form magnesium or calcium carbonates in said biocatalyst and carbonation reactor; and
recycling a solution containing said biocatalyst after forming magnesium or calcium carbonates for re-use in said dissolution reactor;
wherein said carbonic anhydrase biocatalyst is one of the enzymes Cam or Cab or a whole cell that expresses one of the enzymes Cam or Cab.

Assignees

• Univ Columbia

Inventors

• Park Ah-Hyung Alissa
• Swanson Edward J
• Zhao Huangjing
• Gadikota Greeshma
• Brady Patrick V
• Patel Tushar
• Banta Scott

Classifications

• C01F11/183

  the additive being an organic compound · CPC title

• B01D2255/804

  Enzymatic · CPC title

• B01D53/86

  Catalytic processes · CPC title

• B01D2251/402

  of magnesium · CPC title

• C01F5/24

  Magnesium carbonates · CPC title