Fredenslund, Anders Michael3; Møller, Henrik Bjarne4; Christensen, Thomas Budde2; Kjær, Tyge2
1 The Department of Environmental, Social and Spatial Change, Roskilde University2 Environment, Energy, Transport - Regulation, Innovation, and Climate Policy, Department of People and Technology, Roskilde University3 Environmental Risk, Administration Department of Roskilde University, Roskilde University4 Aarhus University
Solrød Municipality, Denmark is working towards building a biogas plant utilizing locally available organic wastes including cast seaweed, which is collected each year, since the local inhabitants see this material as a nuisance. A preliminary study suggested favorable conditions for contstructing a mixed substrate biogas plant. Continuously fed reactor experiments showed that the intended mix of substrate including cast seaweed could be used as raw material for a biogas plant in thermophilic operation. The environmental analysis suggests existence of several positive benefits of utilizing cast seaweed in Solrød, among which are: Production of renewable energy, greenhouse gas reduction, nutrient recycling and odor reduction.