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In groundwater system

Major problems are associated with using the linear distribution coefficient for describing adsorption-desorption reactions in groundwater systems. Some of these problems include the... [Pg.829]

Hoag, G. E., Bruell, C. J., and Marley, M. C., 1984, Study of the Mechanisms Controlling Gasoline Hydrocarbon Partitioning and Transport in Groundwater Systems Institute of Water Resources, University of Connecticut, U.S. Department of the Interior Research Project No. G832-066, 51 pp. [Pg.164]

A data set from three groundwater systems supports the hypothesis that Cr(VI) reduction in groundwater systems causes enrichment of the remaining Cr(VI) in the heavier isotope, and provides assurance that the purification methodology is effective. Ellis et al. (2002) measured... [Pg.311]

White AF, Dubrovsky NM (1994) Chemical oxidation-reduction controls on selenium mobility in groundwater systems. In Environmental Chemistry of Selenium. Frankenberger Jr. WT, Engberg RA (eds), Marcel Dekker, New York, p 185-221... [Pg.318]

Fig. 13.9 Observed transformations of chlorinated ethenes in groundwater system. (Chapelle and Bradley 1998)... Fig. 13.9 Observed transformations of chlorinated ethenes in groundwater system. (Chapelle and Bradley 1998)...
Temperature sensitivities can be a limiting factor when using surfactants in groundwater systems. Low temperatures can cause the surfactant concentration to drop below the cation exchange capacity (CMC), rendering the surfactant useless. This effect can be abated with surfactant engineering or by using a co-surfactant. [Pg.1018]

Illustrative Example 25.1 Darcy s Law in Groundwater Systems S Illustrative Example 25.2 Dispersion and Advection in Groundwater System S... [Pg.1147]

Illustrative Example 25.6 Transport of Tetrachloroethene in Groundwater System S... [Pg.1147]

Specific Discharge q, Effective Mean Flow Velocity u, and Travel Time fw for Different Flow Regimes in Groundwater System S... [Pg.1159]

Bradley PM (2000) Microbial degradation of chloroethenes in groundwater systems. Hydrogeol J 8 104-111... [Pg.61]

Zheng C (1990) MT3D, A modular three-dimensional transport model for simulation of advection, dispersion, and chemical reactions of contaminants in groundwater systems. SS Papadopulos Associates, Rockville, MD... [Pg.62]

The phenomenon of lateral overflow is of basic importance in groundwater systems in steady-state conditions, typical for unconfined groundwater systems, the rocks beneath the level of the terminal base of... [Pg.33]

Studies on Atmospheric Noble Gas Retention in Groundwater Systems Cold Groundwater... [Pg.291]

Case Studies and Observed Trends in the Distribution of Helium Concentrations in Groundwater Systems... [Pg.314]

Mazor, E. (1992b) Reinterpretation of Cl-36 data physical processes, hydraulic inter-connections, and age estimates in groundwater systems. Applied Geochem. 7, 351-360. [Pg.444]

Mazor, E. (1993c) The need for auxiliary data to address the long list of processes recruited to interpret 36C1 data in groundwater systems—a reply to the comment by J.C. Fontes and J.N. Andrews. Applied Geochem. 8, 667-669. [Pg.444]

Due to the difficulties of getting analytical solutions, many numerical methods were developed to simulate the solute transport and retention processes in the soil. Deane et al. (1999) analyzed the transport and fate of hydrophobic organic chemicals (HOCs) in consolidated sediments and saturated soils. Walter et al. (1994) developed a model for simulating transport of multiple thermodynamically reacting chemical substances in groundwater systems. Islam et al. (1999) presented a modeling... [Pg.63]

Schwarzenbach, R.P., Westall, J. (1985) Sorption of hydrophobic trace organic compounds in groundwater systems. Wat. Sci. Technol. 17, 35-55. [Pg.766]

Kendall C. and Aravena R. (2000) Nitrate isotopes in groundwater systems. In Environmental Tracers in Subsurface Hydrology (eds. P. Cook and A. Herzceg). Kluwer Academic, Norwell, MA, pp. 261-298. [Pg.2614]

Johnson T. M. and DePaolo D. J. (1994) Interpretation of isotopic data in groundwater systems model development and application to Sr isotope data from Yucca Mountain. Water Resour. Res. 30, 1571-1587. [Pg.2642]

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