Carbon dioxide-capturing cement compositions and related methods

Abstract

Cement compositions that can capture carbon dioxide and related methods are generally described.

1 . A cement composition for capturing carbon dioxide, the composition comprising:
 a first material comprising a pozzolanic material;   a second material comprising silica and/or carbonate compound; and   a metal oxide.   
     
     
         2 . A cement composition for capturing carbon dioxide, the composition comprising:
 a first material comprising a porous inorganic material;   a second material comprising silica; and   a third material comprising a metal oxide.   
     
     
         3 . A cement composition for capturing carbon dioxide, the composition comprising:
 a first material comprising a porous inorganic material;   a second material comprising a carbonate compound; and   a metal oxide.   
     
     
         4 . A cement composition for capturing carbon dioxide, the composition comprising:
 a first material comprising a porous material;   a second material comprising a silica and/or a carbonate compound.   
     
     
         5 . The cement composition of  claim 1 , wherein the composition can capture carbon dioxide in an amount of greater than or equal to 0.1 wt %. 
     
     
         6 . The cement composition of  claim 1 , wherein a porosity of the cement composition is greater than or equal to 20% and less than or equal to 80%. 
     
     
         7 . The cement composition of  claim 1 , wherein a porosity of the first material is greater than or equal to 20% and less than or equal to 80%. 
     
     
         8 . The cement composition of  claim 1 , wherein a porosity of the second and/or the third material is greater than or equal to 20% and less than or equal to 80%. 
     
     
         9 . The cement composition of  claim 1 , wherein the first material comprises a zeolite. 
     
     
         10 . The cement composition of  claim 1 , wherein the first material comprises a mafic mineral. 
     
     
         11 . The cement composition of  claim 1 , further comprising a plurality of microorganisms configured to catalyze capture of carbon dioxide. 
     
     
         12 . The cement composition of  claim 1 , further comprising microorganisms comprising a  Bacillus  strain. 
     
     
         13 . A concrete composition comprising the cement composition of  claim 1 , and further comprising one or more concrete-forming materials. 
     
     
         14 . The concrete composition of  claim 13 , wherein the concrete composition has greater than or equal to 0.01 wt % and/or less than or equal to 15 wt % of the first material, the second material, and/or the third material.