Abstract: A model describing the enhanced in‐situ biodegradation of an organic substrate in ground water is presented. This model simulates the transport and aerobic utilization of substrate and oxygen; the transport and growth of ...

Abstract: Two models describing the sorption of hydrophobic organic pollutants are compared. The models describe interactions in the water column between the fraction adsorbed on suspended sediments and the fraction in solution. ...

Abstract: A soil-slurry washing technique to decontaminate soils containing low-solubility nonionic organic pollutants was investigated, using phenanthrene as a model pollutant. The technique is based on first transferring the sorbed ...

Abstract: The mineral surface of Wyoming bentonite was modified by replacing inorganic ions by different quaternary ammonium compounds of known molecular structure by an ion‐exchange process. The resulting organically modified ...

Abstract: Relationships to estimate confidence intervals for linear regressions were presented to determine the uncertainty of estimates obtained from firstorder models, when the concentration in grab samples of the parameter studied ...

Abstract: A simple model‐calibration technique that takes into account the random fluctuations of field measurements and yields probability distribution of the model input parameters is tested. This technique is based on the following ...

Abstract: The biological reduction of uranium from soluble