Product news

Biogas consists mainly of methane (CH4), carbon dioxide (CO2) and hydrogen sulphide (H2S). H2S measurement is a major challenge in biogas analysis. Wi.Tec-Sensorik GmbH has developed a highly accurate and long-term stable H2S gas sensor for this area of application based on UVLED technology.

Hydrogen sulphide (H2S) is an undesirable component of biogas, which is mainly produced during the processing of animal waste. The utilisation of biogas is restricted by this component and must therefore be removed at all costs. In particular, combustion in gas engines is impaired by H2S and can lead to the destruction of the engines (SO2 formation).

H2S is also toxic and harmful to the environment. The measurement of this component is therefore an important task and a prerequisite for the environmentally friendly utilisation of biogas. There is therefore a considerable need for reliable H2S measurement technology to promote the use of biogas plants. Although the electrochemical gas sensors currently in use fulfil some requirements, chemical decomposition processes mean that they are not stable in the long term and require little maintenance. With an innovative approach (NDUV technology) based on UV light-emitting diodes (UV LEDs), Wi.Tec-Sensorik GmbH has succeeded in developing a practical H2S gas sensor (ULTRA.sens®) as part of a DBU research project.

Original publication at Wi.Tec >
https://www.witec-sensorik.de/en/news/high-end-gas-analysis-in-biogas-plants-using-ultra-sens-infra-sens/

Download link of the announcement (EN) >
https://www.witec-sensorik.de/en/downloads/announcement-h2s-measurement-in-biogas-plants/