Final Technical Report DE-FG02-03ER63576

Seymour, Joseph D.

Montana State University--Bozeman

关键词: Probability;    Porous Materials Magnetic Resonance Microscopy, Biofouling, Biofilms, Porous Media, Transport Phenomena;    Transport;    Magnetic Resonance Microscopy, Biofouling, Biofilms, Porous Media, Transport Phenomena;    Microscopy;   

DOI  :  10.2172/903049
RP-ID  :  DOE/ER/63576
RP-ID  :  FG02-03ER63576
RP-ID  :  903049

美国|英语

来源: UNT Digital Library

【 摘 要 】

The magnetic resonance microscopy (MRM) work at Montana State University has provided unique data on transport in biofouled systems by imaging of biofilm structure and velocity in capillary and porous reactors. In poruos media non-invasive MRM directly measures length and time scale dependent dynamics. Our research demonstrates by direct measurement of the propagator, i.e. the displacement conditional probability or van Hove scattering function, the transition from normal to anomalous hydrodynamic dispersion as a function of bioactivity. The microbial activity transforms the porous media from a homogeneous to heterogeneous structure, increasing system complexity asdefined in terms of dynamics. Integration of these new data into model development for subsurface fate and transport of contaminants will be undertaken in future research.