Udnyttelse af industrielle organiske restprodukter i en mere bæredygtig og vedvarende energiproduktion i Danmark

Nikolaj Persson, Trine Lee & Sanne Solmer-Hansen

Studenteropgave: Semesterprojekt


Since the industrial revolution, the proportion of CO2 in the atmosphere has increased from 280 ppm to 392 ppm. In line with this increase, the global temperature due to the greenhouse effect has enhanced by 0.6 degrees. One of the main reasons for this increase is the combustion of fossil fuels. In the Danish energy production 39.7% is based on the fossil fuel coal. A pessimistic assessment assumes that coal will not be an available resource within the next 200 years. Energy production of coal is not sustainable or renewable. A more sustainable and renewable alternative is to make use of organic industrial residues for biogas production. Organic residues can be the result of a linear system of production in which resources are used inefficiently. By use of the theories Industrial Ecology and Circular Economy the project provides an example of how organic residues can be exchanged to a biogas plant and thus exploited physically efficiently. Based on Faxe Brewery as a case study it is estimated that residues; mash, brewers yeast and organic material in the wastewater can be used in an exchange between Faxe Brewery and a biogas plant. It is estimated that by the use of residues in a biogas plant 1,554 tonnes of CO2 compared with energy based on coal production can be supplanted. It is estimated that the payback period will be 9 years for implementing a separation plant on Faxe Brewery as part of our solution. In conclusion we find possible internal barriers on Faxe Brewery that might arise in connection with implementation of our solution. This knowledge is obtained through semi-structured interviews with environmental managers from Faxe Brewery. Barriers are identified as the priority of environmental initiatives from management, one-track minded environmental focus, economic priorities and reliance on established resource exchanges.

UddannelserTekSam - miljøplanlægning, (Bachelor/kandidatuddannelse) Bachelor el. kandidat
Udgivelsesdato27 maj 2013


  • restprodukter
  • bæredygtig energi