Thema 18

Groundwater and CO₂

hosted by International Association of Hydrogeologists IAH

Jannes Kordilla¹, Judith Flügge², Johannes A.C. Barth³

¹ Institute of Environmental Assessment and Water Research (IDAEA-CSIC), Barcelona
² Gesellschaft für Anlagen- und Reaktorsicherheit (GRS), Braunschweig
³ Friedrich-Alexander-Universität Erlangen-Nürnberg

CO₂ is abundant in groundwater, and hence an important topic for international research. CO₂ production in groundwater is enhanced due to lack of photosynthesis, and under reducing conditions it may trigger methane production. Groundwater carbon cycling links to the unsaturated zone and surface water systems that may emit large amounts of CO₂. Pollutant turnover in groundwater is also affected by CO₂, and quantification of carbon and identification of sources and sinks can help to trace and understand (weathering) reactions. CO₂ is also of interest for climate mitigation strategies such as carbon capture and storage (CCS), and remains important in deep groundwater systems affected by plutonic processes. We invite transdisciplinary contributions on groundwater-surface water interaction, biogeochemical turnover, reactive pathway characterization, monitored natural attenuation and CCS. Contributions are welcome in German or English; the session will be bilingual.