CDEAL
Carbon dioxide elimination by using acid mine lakes and calcium oxide suspensions
CDEAL's concept is to combine CO2 mineral trapping and treatment of acidic mine waters. In the Lausitz (Lusatia) mining district intensive mining during the last century has produced huge deposits of fly ash, carbon slurry, and iron sludge (caused by the treatment of acid mine drainage) in the abandoned and flooded mine pits. One of these former pits is the acidic Burghammer pit which contains large amounts of these substances deposited on its bottom. A treatment of lake Burghammer sediments and water with CO2 appears thermodynamically feasible using carbonation. Kinetic aspects, the real world phase assemblage, and technical aspects of the dosage, mixing, precipitation, and settling of the carbonate solid will be investigated in the project. CDEAL will perform laboratory experiments in the first stage and in case of a positive evaluation a feasibility pilot scale plant will be constructed and a field scale CO2-injection plant will be installed at the Burghammer open pit lake.
Project co-ordination:
Prof. B. Merkel
Technische Universität Bergakademie Freiberg
Partners:
Technische Universität Bergakademie Freiberg
Dresdner Grundwasserforschungszentrum e.V. (DGFZ)
