Reagentless separator for removal of acid gases and their hydrolysis products from solutions
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United States of America Patent
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Sep 14, 1993
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N/A
app pub date -
Jul 12, 1991
filing date -
Jul 12, 1991
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Abstract
A reagentless separator for removal of hydrolyzed species such as bicarbonate or carbonate to free or dissolved acid gases from a solution comprises a flow-through solid-phase acid bed through which the solution is passed for decreasing the pH of the solution and thus converting the hydrolyzed species into a free or dissolved acid gases. The converted hydrolyzed species is then separated from the solution by a gas permeable membrane degasser having an acid gas permeable membrane across which a partial pressure gradient is established. The solution may be an aqueous solution containing CO.sub.2 or any other hydrolyzed gas. The dissolved acid gas separator will be especially useful on space craft missions where water must be recycled.
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