Colloids in groundwater: Their mobilization, subsurface transport, and sorption affinity for toxic chemicals
During the initial project period, we have pursued several activities with the overall goal of characterizing the roles of colloid in groundwater. First, we have collected soil cores from a site where we have previously found large quantities of kaolinite colloids in the groundwater. We have intensely investigated these cores to test our hypothesis that the colloids have been mobilized as a result of iron oxide dissolution. Next, we have constructed a soil core system in our laboratory with which we are attempting to mimic the factors that we think are governing colloid transport in the subsurface. Finally, we have pursued the issue of how well organic chemicals bind to the kinds of colloids that we are seeing at field sites. Together, with our knowledge of colloid mobility, we anticipate that this sorption data will enable us to predict the influence of groundwater colloids on contaminant fates in the subsurface. Our progress in each of these activities is described in this report. 7 refs., 12 figs.
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge, MA (USA)
- Sponsoring Organization:
- DOE/ER
- DOE Contract Number:
- FG02-89ER60846
- OSTI ID:
- 6144063
- Report Number(s):
- DOE/ER/60846-1; ON: DE91005341
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
COLLOIDS
ENVIRONMENTAL TRANSPORT
KAOLINITE
SORPTIVE PROPERTIES
BENCH-SCALE EXPERIMENTS
DISSOLUTION
GROUND WATER
IRON OXIDES
PROGRESS REPORT
SCANNING ELECTRON MICROSCOPY
SUBSURFACE ENVIRONMENTS
TOXIC MATERIALS
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
CHALCOGENIDES
DISPERSIONS
DOCUMENT TYPES
ELECTRON MICROSCOPY
HYDROGEN COMPOUNDS
IRON COMPOUNDS
MASS TRANSFER
MATERIALS
MICROSCOPY
MINERALS
OXIDES
OXYGEN COMPOUNDS
SILICATE MINERALS
SILICATES
SILICON COMPOUNDS
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
WATER
540320* - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)
360603 - Materials- Properties