“Different pretreatments of beach-cast seaweed for biogas production”

The increasing amount of seaweed accumulated in the coasts calls for a proper disposal or treatment order to reduce secondary pollution effects. Anaerobic digestion is technology that simultaneously produces biogas, supporting further expansion renewable energy production through sustainable bioresources. In this study, three pretreatments (alkaline, hydrothermal and thermo-acidic) were applied on beach-cast Baltic Sea improve methane yield. thermo-acidic pretreatment resulted highest increase yield (78% higher than raw seaweed), while alkaline 36% reduction cost compared based preliminary economic assessment. Determination different sugars sugar acids before after assisted understanding effects each matrix. • Beach-cast was analyzed its composition acids. A hydrothermal, an applied. CH 4 (78%). hydrolysis rate improved by all Alkaline lowest from seaweed.