Stefan is senior researcher/ advisor environmental chemistry and microbiology at Deltares. His PhD was on the effects of metals on methanogenic wastewater treatment. At Deltares, he carries out applied research of biogeochemical processes in soil and water related to practical questions, such as greenhouse gas emissions, eutrophication and energy transition, in close collaboration between various partners, including governments, industry, academia and NGOs.
Articles By Stefan Jansen
Study of greenhouse gas emissions during ripening of dredged marine sediment
As increasing greenhouse gas (GHG) emissions contribute to global warming, it is becoming more important to consider the carbon footprint of hydraulic engineering projects. This carbon footprint is more complex than previously thought however, as it can also include the carbon dynamics of the sediments from which projects are built. The purpose of this study was to provide a first approximation from sediment-related GHG emissions of dredged sediments. Using the case study of the clay ripening pilot project (‘Kleirijperij’) in Groningen, the Netherlands, one phase of sediment processing was examined: the ripening of dredged sediments for use as a clay material in dyke construction.