Date of Award
Master of Science (MS)
Environmental Engineering and Earth Science
Dr. Caye Drapcho
Dr. M.K. Watson
Dr. Nhuan Nghiem
An experimental method for measurement and determination of carbon dioxide volumetric mass transfer coefficients (kLa) in high pH water was developed. The goal of this research was to develop a relationship between CO2 and O2 volumetric mass transfer coefficients for accurate kLa values in order to meet the needs of carbon capture systems and other industries. Results included dissolved oxygen (DO) and total inorganic carbon (TIC) kLa comparisons, as well as polarographic DO (mg/L) and galvanic DO (mV) kLa correlation. CO2 kLa estimation based on O2 mass transfer was significantly higher than experimental results. Mean CO2 kLa values for a specific air-lift device ranged from 0.063 - 0.2 (1/min) for three depths and air flow rates for laboratory-scale experiments. When compared to laboratory-scale kLa values with equivalent water depth and air flow rate parameters, small pilot-scale average CO2 and TIC kLa values decreased proportionally with increase in volume. This relationship confirmed laboratory CO2 kLa results to be an accurate scale up TIC delivery predictor for pilot algae raceway systems.
Walker, John, "Development of Mass Transfer Coefficient Correlations Between Carbon Dioxide and Oxygen for Air-lift Devices" (2023). All Theses. 4155.