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Books > Earth & environment > Earth sciences > The hydrosphere > Hydrology (freshwater)
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Groundwater Geochemistry - A Practical Guide to Modeling of Natural and Contaminated Aquatic Systems (Mixed media product, 2nd ed. 2008)
Loot Price: R2,867
Discovery Miles 28 670
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Groundwater Geochemistry - A Practical Guide to Modeling of Natural and Contaminated Aquatic Systems (Mixed media product, 2nd ed. 2008)
Expected to ship within 12 - 19 working days
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To understand hydrochemistry and to analyze natural as well as
man-made impacts on aquatic systems, hydrogeochemical models have
been used since the 1960's and more frequently in recent times.
Numerical groundwater flow, transport, and geochemical models are
important tools besides classical deterministic and analytical
approaches. Solving complex linear or non-linear systems of
equations, commonly with hundreds of unknown parameters, is a
routine task for a PC. Modeling hydrogeochemical processes requires
a detailed and accurate water analysis, as well as thermodynamic
and kinetic data as input. Thermodynamic data, such as complex
formation constants and solubility-products, are often provided as
databases within the respective programs. However, the description
of surface-controlled reactions (sorption, cation exchange, surface
complexation) and kinetically controlled reactions requires
additional input data. Unlike groundwater flow and transport
models, thermodynamic models, in principal, do not need any
calibration. However, considering surface-controlled or kinetically
controlled reaction models might be subject to calibration. Typical
problems for the application of geochemical models are: *
speciation * determination of saturation indices * adjustment of
equilibria/disequilibria for minerals or gases * mixing of
different waters * modeling the effects of temperature *
stoichiometric reactions (e.g. titration) * reactions with solids,
fluids, and gaseous phases (in open and closed systems) * sorption
(cation exchange, surface complexation) * inverse modeling *
kinetically controlled reactions * reactive transport
Hydrogeochemical models depend on the quality of the chemical
analysis, the boundary conditions presumed by the program,
theoretical concepts (e.g.
General
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