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At 09:43 PM 10/21/99 -0700, tgunther@co*.co* wrote: >Comments; thoughts; informed opinions? Hydrogen gas may be fairly easy to get rid if of, especially when employing a biological catalyst. It "likes to" combine with other elements in the first place. Hydrogen + oxygen = water. Molecular nitrogen (N2) is extremely stable but bacteria are certainly known to work on it in some environments. Once the bond between the two nitrogen atoms is broken, nitrogen is no longer chemically inert. Helium, on the other hand, will not combine with anything and can't be eliminated as a gas by making it form compounds. Thus, this is of limited value for deep diving, unless the tide turns in favor of hydrogen again. The reason it's not being used relates directly to this chemical elimination -- hydrogen tends to combine with oxygen all by itself if the oxygen rises beyond 4%. This process is also known as an explosion and will effectively eliminate the gas as well as the diver. However, if the nitrogen research pans out it might do wonders for deep air :-) regards, Hans -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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