Hello Listers and Theo, To get hydrogen sulphide you need sulphur. Most grains or starch materials have very little sulphur in them, so hydrogen sulphide is not an inherent product from the processing of vodka. However, sulphur compounds are often added as a preservative in wine and alcohol manufacture, so it might be added to the process. This would explain the confusing answers; it depends on the way the vodka is processed.
I discovered this issue myself. I was running a laboratory digester on starch, but decided I needed to add nitrogen to keep the microbes happy. We therefore purchased nitrogen rich fertilisers. Unfortunately, we added ammonium sulphide and wondered why we suddenly started producing hydrogen sulphide. It was not until I looked at the packet that I worked out why I was stinking the laboratory out. -- Best regards, David mailto:[email protected] Monday, August 15, 2011, 12:48:47 PM, you wrote: > Hello All, > Does anyone have experience with the digestion of residues from the > production of Vodka? And does this give a high amount of H2S in the > biogas which cannot be removed by simple blowing in a small amount of > air? > I seem to get confusing answers. Some say it is notorious for high > hydrogen sulfide levels, others say it doesn't . > Hope you can help me, > Theo Bijman > _______________________________________________ > Digestion mailing list > to Send a Message to the list, use the email address > [email protected] > to UNSUBSCRIBE or Change your List Settings use the web page > http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org > for more information about digestion, see > Beginner's Guide to Biogas > http://www.adelaide.edu.au/biogas/ > and the Biogas Wiki http://biogas.wikispaces.com/ ******************************************************************** Dr David Fulford CEnv MEI, 15, Brandon Ave, Woodley, Reading RG5 4PU [email protected], Tel: +44(0)118 326 9779 Mob: +44(0)7746 806401 Kingdom Bioenergy Ltd, www.kingdombio.com, [email protected] _______________________________________________ Digestion mailing list to Send a Message to the list, use the email address [email protected] to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org for more information about digestion, see Beginner's Guide to Biogas http://www.adelaide.edu.au/biogas/ and the Biogas Wiki http://biogas.wikispaces.com/
