Keywords
carbon sequestration, carbon dioxide, calcium carbonate, nanoparticles, surfactant, scrubber, AOT, PEG
Presentation Type
Event
Research Abstract
The emission of carbon dioxide caused by burning fossil fuels is one of the leading sources of global warming. Reducing the amount of CO2 released into the atmosphere through carbon sequestration can mitigate this problem. One method of carbon sequestration is the use of a carbon dioxide scrubber. Once captured, CO2 can be used to create a valuable chemical commodity such as calcium carbonate nanoparticles. To create CaCO3 particles in the 50-100 nanometer range, a chemical additive is necessary to limit particle size. The study used a laboratory scale carbon dioxide scrubber to react CO2 with calcium chloride and OH- ions to form calcium carbonate nanoparticles. Varying CaCl2 concentrations were tested as well as two chemical additives (AOT and PEG) in varying amounts. The resulting CaCO3 nanoparticles were analyzed to determine average particle size using dynamic light scattering. The study confirmed that the scrubber process effectively reduced CO2 released from the system. In general, larger quantities of additive led to smaller particles, but while AOT and PEG both limit CaCO3 particle size, AOT was the most effective. Unexpected results showed that larger concentrations of CaCl2 reduce the formation of bubble build-up in the reactor. Future work can be done to explore this effect of CaCl2 on sud formation by monitoring and recording bubble levels during the reaction.
Session Track
Combustion and Propulsion
Recommended Citation
Krista E. Stump and Michael T. Harris,
"Carbon Dioxide Sequestration to form Calcium Carbonate Nanoparticles"
().
The Summer Undergraduate Research Fellowship (SURF) Symposium.
Paper 141.
https://docs.lib.purdue.edu/surf/2013/presentations/141
Included in
Carbon Dioxide Sequestration to form Calcium Carbonate Nanoparticles
The emission of carbon dioxide caused by burning fossil fuels is one of the leading sources of global warming. Reducing the amount of CO2 released into the atmosphere through carbon sequestration can mitigate this problem. One method of carbon sequestration is the use of a carbon dioxide scrubber. Once captured, CO2 can be used to create a valuable chemical commodity such as calcium carbonate nanoparticles. To create CaCO3 particles in the 50-100 nanometer range, a chemical additive is necessary to limit particle size. The study used a laboratory scale carbon dioxide scrubber to react CO2 with calcium chloride and OH- ions to form calcium carbonate nanoparticles. Varying CaCl2 concentrations were tested as well as two chemical additives (AOT and PEG) in varying amounts. The resulting CaCO3 nanoparticles were analyzed to determine average particle size using dynamic light scattering. The study confirmed that the scrubber process effectively reduced CO2 released from the system. In general, larger quantities of additive led to smaller particles, but while AOT and PEG both limit CaCO3 particle size, AOT was the most effective. Unexpected results showed that larger concentrations of CaCl2 reduce the formation of bubble build-up in the reactor. Future work can be done to explore this effect of CaCl2 on sud formation by monitoring and recording bubble levels during the reaction.