Abstract
An electrochemical cell is used to demonstrate a significant improvement in the recovery of bromine from waste gas‐phase hydrogen bromide (HBr) streams. The continuous process operates at 300°C and utilizes reticulated vitreous carbon gas‐diffusion electrodes, a molten Br electrolyte, and borosilicate glass fiber membrane. HBr is simultaneously electrolytically decomposed and separated into a hydrogen enriched waste stream and pure anhydrous product stream. Simulated industrial waste streams containing HBr, nitrogen, water vapor, and organic compounds have been tested. These results include removals of greater than 90% and current densities approaching 1.0 A/cm2.
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