CO2 Mineralization Presented by: Victoria
CO2 Bicarbonate • Calcium Bicarbonate • Ca(OH)2 + CO2 → CaCO3 + H2O • CO2 + H2O «-» H+ + HCO3- • Or Sodium bicarbonate • CO2 + 2NaOH → Na2CO3 + H2O
Implementation • 1. The bacteria need to uptake CO2 (or it can use it’s own waste CO2) • 2. the bacteria need to be able to convert CO2 CaCO3 • 3. The CaCO3 needs to leave the bacteria (so that you don’t have to kill the bacteria to collect the precipitate) • Would the bacteria get rid of the precipitate on its own?
Breaking it down • Maximizing CO2 uptake by bacteria (1 person) • Trying different methods of CO2 CaCO3 • Make the bacteria produce a CO2CaCO3 converter enzyme (2 people) • Make the bacteria produce Ca(OH)2 (Ca + NaOH) so that when the CO2 was absorbed the calcium carbonate would just precipitate out. (2 people) • Can the bacteria survive with NaOH everywhere? • Make bacteria that can survive with NaOH everywhere.
CO2 Solution sort of…did it already. • http://www.technologyreview.com/Energy/18217/?a=f • “The company has genetically engineered E. coli bacteria to produce an enzyme that converts carbon dioxide into bicarbonate. The enzyme sits at the core of a bioreactor technology that could be scaled up to capture carbon-dioxide emissions from power plants that run on fossil fuels.”