K-12 Carbon Capture: Chalk from CO2
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At the 2013 Carbon Management Technology Conference (CMTC13), Tony Butterfield from the University of Utah presented teaching modules on carbon capture designed for high school teachers to help their students understand more about carbon capture (links to modules below). The modules were developed by Alissa Park, Columbia University, is association with the NSF-funded Research Coordination Network on Carbon Capture, Utilization, and Storage (RCN-CCUS). For more information on RCN-CCUS, visit: http://www.aiche.org/ccus-network Carbon Capture in Water module: http://www.che.utah.edu/outreach/module?p_id=37 Carbon Captured Chalk module: http://www.che.utah.edu/outreach/module?p_id=36 For other K-12 outreach modules from the University of Utah, visit: http://www.che.utah.edu/~tony/OTM/
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K-12 Carbon Capture: Chalk from CO2
- 1. Carbon Capture Chalk From CO2 Anthony Butterfield Assistant Professor, Department of Chemical Engineering University of Utah Based on a Teaching Module Developed by Alissa Park Developed by The NSF Research Coordination Network on CCUS http://www.aiche.org/ccus-network http://www.che.utah.edu/outreach/module?p_id=36
- 2. Safety • Everyone put on: – A pair of safety glass. – A pair of gloves. CaCl2 Phenol Red Na2CO3
- 3. Why Care About Atmospheric CO2?
- 4. Global Temperatures & CO2 Correlation…
- 5. Greenhouse Effect? Venus - Surface T = 863 °F - Atmosphere: 96% - CO2 3.5% - N2 0.5% - Other - One generally unpleasant planet
- 6. Why Does CO2 Trap Energy? T=5,500 °C T=15 °C
- 7. Carbon Capture in Nature Tien Son Cave in Phong Nha-Ke Bang Nitzana Chalk Curves Western Negev, Israel Author: Yuvalr
- 8. Trapping CO2 in Water
- 9. Phenol Red
- 11. Why? Human Breath CO2, 4 Other, 1 Air CO2, 0.03 Other, 1 O2, 21 O2, 18.5 N2, 78.5 𝑃𝑖 = 𝐾 𝐻𝑖 𝐶 𝑖 Henry’s Law N2, 78 𝐶𝑂2 + 𝐻2 𝑂 𝐻2 𝐶𝑂3 Reaction Equilibrium
- 13. Materials
- 14. Weigh Out Reactants • 8g of CaCl2. • 8g of Na2CO3 (or a 1:1 stoichiometric ratio).
- 15. Dissolve Salts in Separate 20 ml of Water Temperature?
- 16. Mix the Two Solutions Viscosity? Precipitate?
- 17. The Reaction? 𝑁𝑎2 𝐶𝑂3 (𝑎𝑞) + 𝐶𝑎𝐶𝑙2 (𝑎𝑞) 2𝑁𝑎𝐶𝑙 (𝑎𝑞) + 𝐶𝑎𝐶𝑂3 (𝑠) http://www.che.utah.edu/~tony/OTM/MolKinetics/
- 19. The Intermediate Gel? + Cl-Ca2+Cl- 2Na+Cl- +
- 21. Filter Out the Solid Product
- 22. Dry the Filtered Product
- 23. What Would the Chemical Engineer Do?
- 24. Process Scale-Up • Chemical engineers make products on a large scale, efficiently and safely. • We have big toys. Vs. Author Yuri Raysper
- 25. Going from CO2 to Chalk CO2(g) ↔ CO2(aq) CO2(aq) + H2O ↔ H2CO3(aq) 2 NaOH(aq) + H2CO3(aq) → Na2CO3(aq) + 2 H2O Na2CO3(aq) + CaCl2(aq) → CaCO3(s) + 2 NaCl(aq) CO2(g) + 2 NaOH(aq) + CaCl2(aq) → CaCO3(s) + 2 NaCl(aq) + H2O
- 26. What Would It Take to Capture Your Carbon? • Carbon footprint calculator: – http://www.epa.gov/climatechange/ghgemissions/ind-calculator.html – https://www.google.com/search?q=carbon+footprint+calculator • If you don’t know an answer use the given American household average.
- 27. Average American 83,000 lbs CO2/yr
- 28. What Would It Take to Capture Your Carbon? • If we use this set of reactions: CO2(g) + 2 NaOH(aq) + CaCl2(aq) → CaCO3(s) + 2 NaCl(aq) + H2O How much reactants will we need to use in your personal carbon sequester plant each day? Formula MW (g/mol) CO2 3.76e7 g/yr NaOH 40 CaCl2 111 CaCO3 83,000 lbs/yr 44 100 NaCl 58.4 H2O 18
- 29. What It Might Look Like… Stuff 2 Stuff 1 Process 1 Stuff 4 Stuff 3 Process 2 Stuff 6 Stuff 5 Process 3 Stuff 7 Stuff 8 Who Has the Best Design? Process 4 Stuff 9
- 30. Design Your Carbon Capture Plant some things to consider… • What process do you need to get CO2 out of the air and into water? • What should you use to mix the two solutions you mixed today, and how big should it be? • How are you going to separate your chalk product apart from the salt water product? • How can you ensure complete reactions? • How can you save on resources? Recycle?
- 31. Other CM-Related K-12 Modules • • • • • Photobioreactors. Fermentation. Biodiesel. Fuel Cells. Stirling Engines. http://www.che.utah.edu /outreach/teaching_mod ules
- 35. K-12 Carbon Capture Chalk From CO2 Anthony Butterfield Assistant Professor, Department of Chemical Engineering University of Utah Based on a Teaching Module Developed by Alissa Park Developed by The NSF Research Coordination Network on CCUS http://www.aiche.org/ccus-network http://www.che.utah.edu/outreach/module?p_id=36