Biologically Catalyzed Carbon Dioxide Mineralization Using Yeast-displayed Enzymes and Proteins

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Biologically Catalyzed Mineralization of Carbon Dioxide
Categories
Inventors
Professor Angela Belcher
Department of Biological Engineering and Materials Science and Engineering, MIT
External Link (belcherlab.mit.edu)
Roberto Barbero
Department of Biological Engineering, MIT
Elizabeth Wood
Department of Civil and Environmental Engineering, MIT
Managed By
Christopher Noble
MIT Technology Licensing Officer - Clean and Renewable Energy
Patent Protection

Biologically Catalyzed Mineralization of Carbon Dioxide

US Patent Pending 2013-0045514
Publications
Engineered yeast for enhanced CO2 mineralization
Energy and Environmental Science, (2013) 6(2), 660-674

Applications

Removing COfrom the emissions of fossil-fueled power plants is critical in the fight against global warming. This invention removes CO2 from flue gas of power plants and converts it to carbonate minerals. A strong COcapture system can be useful for research laboratories, refineries, and fossil-fueled power plants in mitigating CO emissions.

Problem Addressed

This invention mitigates the emission of harmful pollutants by using a biologically-catalyzed COsequestration system to capture and store COfrom the flue gas of power plants to prevent it from being released into the atmosphere.

Technology

This invention describes a biologically-catalyzed  CO2 mineralization process that uses yeast-displayed proteins and peptides. The yeast, Saccaramyces cerevisae, is used to manufacture and immobilize proteins and peptides. A biologically-catalyzed approach makes mineral carbonation economically feasible by combining standard temperature and pressure conditions with the low cost of cell-surface-anchored enzymes and peptides. This can be used to enhance the mineralization rate of CO2 and to control the crystal properties of the mineralized CO2. Carbonate minerals have a significantly lower energy state than COand, at least in theory, the mineralization process can be used to produce energy.  This also allows for easy recapture and re-use of the proteins and peptides. This approach provides more exact control over the molecular components in the system, which should aid with system optimization to mineralize the most COpossible.

Advantages

  • High storage capacity and long storage lifetime
  • Low materials cost
  • Can operate in near-standard conditions