Biogases are desulfurized in chemical scrubbers by addition of lye.

The significant content of CO2 in Biogas leads to a considerably higher lye consumption through CO2 absorption. This places critical emphasis on the optimal process design of the cleaning stages and the lye feed.

The Wallstein biogas scrubber is designed with multiple stages depending on the project definition. It is equipped with the necessary measurement and analysis instruments to ensure optimal usage of lye for desulfurization while keeping CO2 absorption at a minimum.