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Abstract

The present invention describes ways of increasing the production efficiency of a saline water electrolysis cell and of consuming CO₂ gas and sequestering it from the atmosphere. This is achieved by the introduction of CO₂ gas into the catholyte of the electrolysis, where reaction of the CO₂ with the hydroxide ions present in the catholyte reduces the pH of the catholyte, thereby increasing production efficiency of the electrolysis cell. The preceding reaction forms bicarbonate and/or carbonate, thus sequestering the reactant CO₂ gas from the atmosphere. The CO₂ gas may be introduced either directly into the cathode area of the electrolysis cell, or into the electrolyte prior to its introduction into the electrolysis cell. Corresponding apparatus is also provided.

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First Claim