Electrochemically Modulated Co2 Removal from Ocean Waters
Project Innovation + Advantages:
The Massachusetts Institute of Technology proposes to use electrochemical modulation of a proton gradient within electrochemical cells to initially release the CO2 in seawater, and then to alkalize the water before it is returned to the ocean. This battery-like electro-swing approach does not require expensive membranes or addition of chemicals, is easy to deploy, and does not lead to formation of byproducts. Innovative electrode configurations will be employed to reduce overall transport and electrical resistances while still enabling large quantities of water to be treated efficiently. Relatively compact CO2 capture processes with promising low energetics, powered by renewable solar or wind resources, could be assembled for deployment on platforms or cargo ships.