There are many procedures. For the removal of H2S: activated carbon filter, oxidation by sulfide eating bacteria, scrubbers + biological treatment.

For separating from CO2: amine scrubbinf, high pressure water scrubbing, pressure swing absorption. Depending on the application of the Methane after cleaning.

I know no procedure to separate H2S as gas.

I'll see if I find some links to relevant literature for an overview.

Try getting in touch with someone from the Rochester, NH landfill, run by Waste Management of NH (www.wm.com). I know they clean up the landfill gas and sell it. They might have some ideas for you.

If it's a lab. removal try using caustic soda solution.

Why would you want to store H2S, it's very toxic.

For future uses such as heavy metal removal by precipitation in wastewater

Contact me on my [email protected]

I can give you some refrencces.

And the technical points. Now in hurry and will forget to reponse so please remind me by email.

Regards