CO2 Extraction from Seawater Using Bipolar Membrane Electrodialysis

An efficient method for extracting the dissolved CO2 in the oceans would effectively enable the separation of CO2 from the atmosphere without the need to process large volumes of air, and could provide a key step in the synthesis of renewable, carbon-neutral liquid fuels. While the extraction of CO2 from seawater has been previously demonstrated, many challen extraction rates and poor CO2 selectivity, among others. Here we de challenges – efficient CO2 extraction from seawater using bipolar mem We characterize the performance of a custom designed and built CO demonstrating the ability to extract 59 % of the total dissolved inorga gas with an electrochemical energy consumption of 242 kJ mol1(CO membrane electrodialysis (BPMED) for CO2 desorption from potassium carbonate and bicarbonate solutions at ambient separation of CO2 from dilute sources such as the atmosphere. 12,13 to notice that the CO2 in the m with the total dissolved eans,x which is largely in the at the ocean pH of 8.1–8.3.14,15 d for extracting CO2 from the y enable the separation of CO2 to process large volumes of air. (DIC) is given by DIC [CO2] + O2(aq)] + [H2CO3]