Reactive solute transport in streams: 1. Development of an equilibrium- based model

Water Resources Research
By: , and 



An equilibrium-based solute transport model is developed for the simulation of trace metal fate and transport in streams. The model is formed by coupling a solute transport model with a chemical equilibrium submodel based on MINTEQ. The solute transport model considers the physical processes of advection, dispersion, lateral inflow, and transient storage, while the equilibrium submodel considers the speciation and complexation of aqueous species, precipitation/dissolution and sorption. Within the model, reactions in the water column may result in the formation of solid phases (precipitates and sorbed species) that are subject to downstream transport and settling processes. Solid phases on the streambed may also interact with the water column through dissolution and sorption/desorption reactions. Consideration of both mobile (water-borne) and immobile (streambed) solid phases requires a unique set of governing differential equations and solution techniques that are developed herein. The partial differential equations describing physical transport and the algebraic equations describing chemical equilibria are coupled using the sequential iteration approach.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Reactive solute transport in streams: 1. Development of an equilibrium- based model
Series title Water Resources Research
DOI 10.1029/95WR03106
Volume 32
Issue 2
Year Published 1996
Language English
Publisher American Geophysical Union
Contributing office(s) Toxic Substances Hydrology Program
Description 10 p.
First page 409
Last page 418
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