Master-thesis: A financial model of electrochemical carbon dioxide removal from seawater for geological sequestration

William MacLeod, Johns Hopkins University, http://jhir.library.jhu.edu/handle/1774.2/68171

A technology recently developed by the Naval Research Laboratory to synthesize liquid hydrocarbon fuels at sea, extracts CO₂ from seawater using continuous electrodeionization to temporarily acidify it, thereby shifting the carbonate equilibrium to favor CO₂ such that it can be degassed. This paper proposes modifying their technology to focus on CO₂ extraction for the purpose of geological sequestration, rather than fuel synthesis. It uses pro forma cash flow analyses of annual revenues and expenses to estimate the financial viability of the approach across three scenarios representing low, medium and high economic optimism.

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