In Situ Characterization Of Solute Transport Processes In Woodland Soils
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Characterization of Preferential Solute Transport in Soil
Author | : Jaehoon Lee |
Publisher | : |
Total Pages | : 224 |
Release | : 1999 |
Genre | : |
ISBN | : |
In all cases, the average coefficient of determination, r2, for the predicted BTCs was 0.99. For a vertical TDR probe method, there was not always full agreement between the TDR determined parameters and effluent determined parameters. However, predicted BTCs obtained from the TDR method were similar to the observed BTCs with the average r2 being 0.94. The ST method and the two TDR methods are promising methods for estimating MIM parameters. The TDR methods are relatively simple and reliable. Furthermore, TDR is portable and can be multiplexed so that one can install probes at multiple locations in field. However, the TDR methods should be further examined in situ.
Physical and Chemical Processes of Water and Solute Transport/retention in Soils
Author | : Hussein Magdi Selim |
Publisher | : |
Total Pages | : 308 |
Release | : 2001 |
Genre | : Science |
ISBN | : |
Transport and retention of water, nutrients, and inorganic and organic contaminants in the environment is greatly affected by physical and chemical processes in porous media such as soils. To definitively understand these processes, multiple scales--ranging from the landscape to the molecular--be investigated. Topics include fractal and spatial heterogeneity, molecular models, in situ spectroscopic and microscopic techniques, and inclusion of time-dependent phenomena in predicting solute transport/retention in soils.
Processes Affecting Solute Transport Through Soils
Author | : Heiko Walter Langner |
Publisher | : |
Total Pages | : 188 |
Release | : 1997 |
Genre | : Hazardous wastes |
ISBN | : |
Physical and Chemical Processes of Water and Solute Transport/retention in Soils
Author | : |
Publisher | : |
Total Pages | : 280 |
Release | : 2001 |
Genre | : Groundwater flow |
ISBN | : 9780891189510 |
Bioavailability of Contaminants in Soils and Sediments
Author | : National Research Council |
Publisher | : National Academies Press |
Total Pages | : 433 |
Release | : 2003-05-03 |
Genre | : Technology & Engineering |
ISBN | : 0309086256 |
Bioavailability refers to the extent to which humans and ecological receptors are exposed to contaminants in soil or sediment. The concept of bioavailability has recently piqued the interest of the hazardous waste industry as an important consideration in deciding how much waste to clean up. The rationale is that if contaminants in soil and sediment are not bioavailable, then more contaminant mass can be left in place without creating additional risk. A new NRC report notes that the potential for the consideration of bioavailability to influence decision-making is greatest where certain chemical, environmental, and regulatory factors align. The current use of bioavailability in risk assessment and hazardous waste cleanup regulations is demystified, and acceptable tools and models for bioavailability assessment are discussed and ranked according to seven criteria. Finally, the intimate link between bioavailability and bioremediation is explored. The report concludes with suggestions for moving bioavailability forward in the regulatory arena for both soil and sediment cleanup.