MRI study of non-aqueous phase liquid extraction from porous media.
Magnetic resonance imaging is used to investigate, at the pore scale, the dissolution and mobilisation of discrete non-aqueous phase liquid (octanol) ganglia trapped within porous media by capillary forces, by a mobile aqueous phase. Dissolution is observed to be described by a mass-transfer limited model. Mobilisation of entrapped ganglia commences at lower flowrates when a surfactant is introduced into the mobile aqueous phase.
Johns
M L
ML
Department of Chemical Engineering, University of Cambridge, UK.
Gladden
L F
LF
D020003:1-Octanol / Q000302:isolation & purification*; D006801:Humans; D008279:Magnetic Resonance Imaging; D009682:Magnetic Resonance Spectroscopy; D016062:Porosity; D012212:Rheology; D012996:Solutions; D013501:Surface-Active Agents
D012996:Solutions; D013501:Surface-Active Agents; D020003:1-Octanol