H2S Scrubbing

Submitted by Nick Chase on
Last changed on 13 Apr, 2016 - 13:27

DIY H2S scrubber

H2S smells like rotten eggs. The benefit is: once you smell it you know that you have a leakage. On the other hand, as already described, its smell is total unpleasant. Another downside is that intermediate gas compressor for Biogas CO2 Scrubbing will not last for very long.

DIY Scrubbing

On a DIY small scale level H2S could be removed by letting the biogas pass through a "bubbler" bottle which contains steel wool. The chemical reaction as follows[http://iicbe.org/siteadmin/upload/3607C414016.pdf] Removal of Hydrogen Sulfide from Biogas using Dry Desulfurization Systems:

2Fe2O3 + 6H2S -> 2Fe2S3 + 6H2O

Iron oxide reacts with hydrogen sulfide forming iron suflide

2Fe2S3 + 3O2 -> 2Fe2O3 + 6S

The iron sulfide then reactions with oxgen to iron oxide.

References

http://www.appropedia.org/Biogas_hydrogen_sulfide_scrubbing_project

Weblinks

http://permaculturewest.org.au/ipc6/ch08/shannon2/index.html H2S Scrubbing described by Permaculture West