10 years of methane emission measurements in Sweden

In biogas plants, where biological treatment of organic matter by anaerobic digestion is performed, as well as in plants for upgrading of biogas to vehicle fuel quality, there might be emissions to air in different parts of the plants. There are mainly four reasons why these emissions should be minimized. These are safety reasons, global environment, local environment and economic reasons. With this in mind, Swedish Waste Management (Avfall Sverige) introduced the Voluntary Agreement for biogas plants in the year 2007, where the participating plants commit to work systematically to identify and reduce their emissions of methane.