Biogas desulfurization – industrial emission treatment technique

The danger of H2S (hydrogen disulfide)

H2S ((di)hydrogen sulfide, hydrogen disulfide or hydrogen sulfide gas) is a toxic and flammable gas with the typical odor of rotten eggs. H2S is formed during the decay of many sulfurous organic substances, such as proteins. It is therefore necessary to remove H2S with biogas desulfurization.

How is H2S removed from biogas? 

For the removal of H2S, a gas scrubber installation is used in which H2S is absorbed from biogas. Such an installation consists of one or more gas scrubbers (washing stages). In addition, an aeration basin can be used.

H2S removal efficiency with a biological air scrubber

The removal efficiency with this method is around 95%. This means that no odour is released into the environment. This can be verified by means of a simple odour measurement or olfactometry.

One of the main advantages of this removal technique is the very low operating cost. After all, no constant supply of chemicals is required.

H2S removal efficiency with a chemical air scrubber

In certain cases, hydrogen sulfide cannot be removed with a biological air scrubber. In that case, a chemical scrubber can be used. This can be a single- or multi-stage gas scrubber. 

Task can provide a tailor-made solution, such that the odor nuisance for the environment is no longer perceptible. Of course, this can also be demonstrated by means of simple odour measurements or olfactometry. Together with our partners, we are happy to assist you.