This fall Denmark's first farm for biorefining of grass was inaugurated at Ausumgaard. Among the guests present was the former Minister of Food, Agriculture and Fisheries Mogens Jensen, and in his opening speech he emphasized how grass is one of the sustainable, locally produced alternative protein sources, which could help reduce the amounts of imported soya - but how did the green adventure really start?

Efficiently recovered, sulfur (S) from the (bio)-gas desulfurization process may be reused as on-farm S fertilizer. Despite some reduction of sulfate and elemental S to sulfide during a storage in untreated and digested manure, the filter products were a valuable source of plant available S.