The film looks at biogas and its role as a major energy mix resource. The film describes the increasing importance of biogas and BASF's contribution to making its use more efficient. BASF customer Verbio, Germany's leading biofuel manufacturer headquartered in Leipzig, Saxony, serves as an example.
Biogas is obtained by fermenting the most diverse substrates such as domestic waste, plants or sewage sludge. Depending on the starting material, the gas mix this generates contains only 50 to 70% of useful methane. The rest is made up by associated gases such as carbon dioxide (CO2) and hydrogen sulfide (H2S), which may cause severe corrosion. So the gas must be purified before it can be fed to the natural gas grid. BASF offers a new gas treatment process for this, which Verbio is using sucessfully.