Methods and systems for capturing and storing carbon dioxide
First Claim
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.
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Accused Products
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.
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Citations
13 Claims
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1. A method of capturing and storing carbon dioxide, said method comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of capturing and storing carbon dioxide, said method comprising:
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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.
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Specification