IDENTIFYING THE RETENTION MECHANISMS OF (BIO)COLLOIDS IN SINGLE, SATURATED, VARIABLE-APERTURE FRACTURES

摘要: The characterization of fractured aquifers is commonly limited to the methodologies developed for unconsolidated porous media aquifers, which results in many uncertainties. Recent work indicates that rocks remove more particulates than they are conventionally been credited for. This research was designed quantify number E. coli RS2-GFP retained single, saturated, variable-aperture fractures extracted from natural environment. Conservative solute and tracer experiments were used elucidate relationships between dominant retention mechanisms, aperture field characteristics, flow rate. A non-destructive method determining a coefficient variation (COV) each fracture better understand transport behaviour RS2-GFP. this all point importance understanding fate contaminants aquifers. mean very important characteristic particulate recovery, so matrix properties, COVS, It also determined attachment much significant mechanism straining under conditions employed research. Finally, it demonstrated varies depending on specific discharge. An improved mechanisms influence through will lead development tools as well ability manipulate relevant increase or decrease retention, application.