Electrolytic process for producing chlorine dioxide
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United States of America Patent
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Mar 20, 2001
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N/A
app pub date -
Oct 16, 1998
filing date -
Oct 17, 1997
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Abstract
A process for converting in a single pass an aqueous alkaline pH, alkali metal chlorite solution into an aqueous chlorine dioxide-containing solution that involves the combination of (1) using an electrochemical acidification cell to lower the pH value of the aqueous alkali metal chlorite feed before it enters the anode compartment of an electrochemical oxidation cell where the chlorite is converted to chlorine dioxide with (2) using an anolyte flow pattern where the anolyte passes through a porous, high surface area electrode. This process results in a substantially improved conversion efficiency per pass.
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