Utilization of wasted sardine oil as co-substrate with pig slurry for biogas production - A pilot experience of decentralized industrial organic waste management in a Portuguese pig farm

► We set up a pilot experience to utilize wasted sardine oil for biogas production. ► We developed an anaerobic co-digestion process of wasted sardine oil with pig slurry. ► We performed dynamic continuous pilot trials with a mobile biogas plant in a pig farm. ► Methane productivity was enhanced in four times, adding waste sardine oil to pig slurry. ► Robust process was achieved, wasted sardine oil could be used at farm biogas plants.