30th December 2012 - 06:22 AM
QUOTE (Capracus+Dec 28 2012, 03:03 AM)
Burn it it'll do!!!
While ago we have been drilling a core hole for coal and the nearby hole (open) started to flow water on surface ;it was an artisan hole and water was flooded .it smells like egg and we thought it is drilling mud ! but it was H2S(after taste!!) ,me about to get sack putting the next door drilling machine on stand by!!And smells like S***!!
14th April 2013 - 03:34 AM
I did not research this, but as normally H2S acts as a reducing agent, the answer is most likely there is nothing that will reduce it to H2. However, if pressed to be creative, the only thing that comes to mind that could even possibly reduce H2S would be so-called nascent H2. From a theoretical point, it may be interesting to treat H2S with H* which must be created in situ. One possible embodiment, add ZnS and Zn to conc HCl. Reactions:
Zn + 2 HCl --> ZnCl2 + 2 H*
ZnS + 2 HCl --> ZnCl2 + H2S
2 H* + H2S --?--> 2 H2 + S
Net, one pot reaction:
Zn + ZnS + 4 HCl --> 2 ZnCl2 + 2 H2 + S
Now, the last reaction is completely specualtive, but if it did occur, it would be quite interesting as well. Also, the creation (existence) of nascent H2, by itself, is disputed in the case of the Zn/HCl reaction (critics claiming other possible paths).
Note, H2S is quite toxic and anyone daring to try to do this, may consider using an expandable closed vessel performing a small scale reaction. If a sulfur suspension resuts, success.
[EDIT] Another idea, pass H2S over heated Ag or Ni...just not an oxide. Reaction:
H2S + Ag --> AgS + H2 (g)
14th April 2013 - 03:36 AM
Double Post deleted.
14th April 2013 - 05:24 AM
Thanks for posting here!
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15th April 2013 - 02:10 PM
Continuing with my ideas to change H2S into H2, the best metal may be just heated Iron (cheap) in limited oxygen:
H2S + Fe --> FeS + H2 (g)
Then use a special bacteria to convert the FeS slowly to FeSO4 as a useful side product for sale. Also, an unwanted reaction, hopefully to a lesser extent depending on O2 access and temperature:
H2S + FeO --> H2O + FeS
Also, on the mystical nascent H2 approach, other possible reactions as well:
ZnCl2 + H2S --> ZnS (s) + 2 HCl (g)
That is, the H2S could reduce some of the newly formed ZnCl2 (back to ZnS) if HCl vapors can exit the reaction. This could negate experimental results (less H2S because of ZnCl2 formation and exiting HCl). To prevent this, use an excess of HCl and do not boil.
Also, on rethinking, the reaction:
2 H* + H2S --?--> 2 H2 + S
is more likely (but still less likely) with atomic hydrogen, and not nascent hydrogen as:
H2 --Electric Discharge--> H* + H*
that is, atomic hydrogen is indeed mono-atomic, but not so for nascent hydrogen (I fell victim to misleading notation, better perhaps is H2* for nascent H2).
15th April 2013 - 02:12 PM
Deleted double post.