Different Methods For H2S Removal From Biogas

The H2S is the shorter form of the Hydrogen sulfide. It is generally found in the biogas but it is identified as one of the problematic compounds. This is because of its role in the corrosion. As the hydrogen sulfide is corrosive in nature it can affect the mechanical wear of the equipment and its operations too. Besides that, the hydrogen sulfide is also poisonous in nature. Hence the presence of hydrogen sulfide in the biogas can lead to the inefficiency of the biogas production. Therefore, it is important to remove the H2S from the biogas to avoid any kind of problems or issues.

Methods to remove hydrogen sulfide

Here are some of the methods to remove the H2S or hydrogen sulfide from the biogas:

  1. Biological Desulphurization

The desulphurization of the biogas can be performed in a biological manner. This can be done by using micro-organisms. To microbiologically oxidize the hydrogen sulfide in the biogas, you will need to add stoichiometric amount of Oxygen in the biogas. This will correspond to about 2 to 6% of the air in biogas depending upon the concentration of the hydrogen sulfide. This is the simplest method where the desulphurization can be done directly by the addition of oxygen into the storage tank.

  1. Desulphurization by iron sponge

This is one of the best and most cost-effective processes that can help you to remove the hydrogen sulfide from the biogas. The iron sponge with either digested garden waste or ground garden waste at the most optimum conditions had the H2S removal performance.

Besides these, the hydrogen sulfide can be removed by the iron oxide, water scrubbing, activated carbon, NaOH scrubbing etc.

Why is it important to remove?

If you are wondering why it is important for you to remove the hydrogen sulfide from the biogas, then you are at the right place. The biogas mainly consists of two major products such as Carbon dioxide (40%) and Methane (60%). But the biogas can produce hydrogen sulfide in it which can lead to inefficiency of the biogas production. Also, the hydrogen sulfide mixed with ammonia can be a potential explosive. Hence, the industries try to remove the hydrogen sulfide from the  natural gas. As mentioned above, it can be removed by different ways. But you need to make sure which one is the right method for you to remove the gas completely.


Being in this industry, you will know that the presence of hydrogen sulfide in biogas can lead to several problems such as corrosion. It is also high inflammable in nature which generally increases the risk of disasters. Hence, you will have to try out industry-based processes to remove the hydrogen sulfide from the biogas. This will help you to utilize the biogas to the fullest without any side effects or dangers. The biogas which is free from hydrogen sulfide is suitable for the environment and you can use it for different purposes. You can talk to the professional hydrogen sulfide removal services to help in removing the H2S from the biogas completely.