Abstract: A system for removing carbon dioxide from a gas includes: an eductor, a CO2-lean gas outlet fluidly coupled to the eductor, a fan fluidly coupled to the CO2-lean gas outlet, the fan being rotatable to discharge the CO2-lean gas from the CO2-lean gas outlet, and a capture solution tank. The eductor includes a capture solution inlet operable to receive a lean capture solution, a gas inlet operable to receive the gas that includes carbon dioxide, a mixing zone configured to react the lean capture solution and the gas that includes carbon dioxide; and, an eductor outlet operable to discharge a mixed fluid that includes a rich capture solution and a CO2-lean gas. The capture solution tank is fluidly coupled to the eductor outlet and to the CO2-lean gas outlet, and the capture solution tank configured to collect the rich capture solution.

Abstract: A gas-liquid contactor for capturing carbon dioxide (CO2) from ambient air includes a flow system comprising: a top basin containing a CO2 capture solution, and a liquid distribution pipe in fluid communication with a turbine nozzle. A pump flows the CO2 capture solution to the turbine nozzle to emit a pressurized flow of the CO2 capture solution. A hydraulic fan comprises a shaft, a hydraulic turbine mounted to the shaft, and fan blades mounted to the shaft. The fan blades are positioned adjacent to an outlet, and the hydraulic turbine is positioned adjacent to the turbine nozzle and rotates upon the pressurized flow of the CO2 capture solution from the turbine nozzle impacting the hydraulic turbine. Rotation of the hydraulic turbine causes rotation of the fan blades, circulation of the ambient air through an inlet and circulation of a CO2-lean gas through the outlet. Related systems and methods are disclosed.