Characterization of the physical, chemical, and biological factors that control the fate and transport of bacteria through glacial-outwash sediments
CHARACTERIZATION OF THE PHYSICAL, CHEMICAL, AND BIOLOGICAL
FACTORS THAT CONTROL THE FATE AND TRANSPORT OF BACTERIA
THROUGH GLACIAL-OUTWASH AQUIFER SEDIMENTS
by Beth L. Mitchell
This study investigated the effects of sediment grain size distribution,
mineralogy and surface charge, and bacterial surface charge on bacterial
transport through natural porous media.
Bacterial flow-through experiments were conducted using three intact
heterogeneous sediment cores. Sediments were characterized for their physical
and chemical properties. The surface charge of the suspended bacteria in the
influent and effluent was also measured.
Results indicated that the presence of dolomite was significant to the
fractions of retained bacteria. Surface charge of the effluent bacteria results
indicated that the attractive forces between the sediments and bacteria were
significant to bacterial transport.
The overall results of this study indicate that degree of sorting, presence of
carbonates, and surface charge of the bacteria are all related to the number of
School Location:USA - Ohio
Source Type:Master's Thesis
Keywords:bacterial transport electrophoresis bacteria surface charge dolomite biological sediments geology
Date of Publication: