Biogas potential of organic waste onboard cruise ships — a yet untapped energy source

Abstract To tap the organic waste generated onboard cruise ships is a very promising approach to reduce their adverse impact on maritime environment. Biogas produced by means of anaerobic digestion offers complementary energy source for ships’ operation. This report comprises detailed presentation results gained from comprehensive investigations gas yield substrates such as food waste, sewage sludge and screening solids. Each person generates total average about 9 kg per day. The performed analyses tests revealed an accumulated methane around 159 L co-digestion (50:50 VS) emerged particularly effective led increased biogas 24%, compared mono-fermentation. In best case, production can provide energetic output 82 W/P, covering 3.3 4.1% demand ship.