Print Email Facebook Twitter Effect of salinity and pressure on the rate of mass transfer in aquifer storage of CO2 Title Effect of salinity and pressure on the rate of mass transfer in aquifer storage of CO2 Author Khosrokhavar, R. Eftekhari, A.A. Farajzadeh, R. Wolf, K.H.A.A. Bruining, J. Faculty Civil Engineering and Geosciences Department Geoscience & Engineering Date 2015-04-04 Abstract The growing concern about global warming has increased interest in improving the technology for the geological storage of CO2 in aquifers. One important aspect for aquifer storage is the rate of transfer between the overlying gas layer and the aquifer below. It is generally accepted that density driven natural convection is an important mechanism that enhances the mass Transfer rate.There is a lack of experimental work that study the transfer rate into water saturated porous medium at in-situ conditions, i.e., above critical temperatures and at pressures above 60 bar. Representative natural convection experiments require relatively large volumes (e.g., a diameter 8.5 cm and a length of 23 cm). We studied the transfer rate experimentally for both fresh water and brine (2.5, 5 and 10 w/w %). The experiment uses a high pressure ISCO pump to keep the pressure constant. A log-log plot reveals that the mass transfer rate is proportional to t^0.8, and thus much faster than the predicted by Fick’s law. Moreover, the experiments show that natural convection currents are weakest in highly concentrated brine and strongest in pure water. To reference this document use: http://resolver.tudelft.nl/uuid:395c8b8a-afb9-43b8-94ec-c5d3ad7f406e Publisher EAGE Source IOR 2015: 18th European Symposium on Improved Oil Recovery, Dresden, Germany, 14-16 April 2015 Part of collection Institutional Repository Document type conference paper Rights (c) 2015 The Author(s) Files PDF 325003.pdf 1.23 MB Close viewer /islandora/object/uuid:395c8b8a-afb9-43b8-94ec-c5d3ad7f406e/datastream/OBJ/view