The proven LESNI solution for purification of hydrogen sulphide (H2S) emission.

LESNI high effective and cost saving technology uses a standard filter in selected material filled with special impregnated activated carbon.

To provide high adsorption capacity to remove sulphur element from biogas by chemical adsorption "chemisorption" and help prevent damage to the gas engine, while extending service interval and lifetime of filter media. The LESNI activated carbon filter is suitable to remove H2S from a few ppm up to 1000's ppm with high purification efficiency.