Model of contaminant transport in porous media in the presence of colloids applied to actinide migration in column experiments

Autor:	C. Tix, U. Noseck, L. Lührmann
Rok vydání:	1998
Předmět:	Hydrology endocrine system Chemistry chemistry.chemical_element Sorption Actinide complex mixtures Matrix (geology) law.invention Colloid Chemical engineering law Europium Porous medium Groundwater Filtration Water Science and Technology
Zdroj:	Water Resources Research. 34:421-426
ISSN:	0043-1397
DOI:	10.1029/97wr03468
Popis:	We simulate column experiments of europium migration in humic-rich groundwater performed with different Darcy velocities to investigate the predictive capability of colloid-facilitated transport models for actinides. The simulation results indicate two retention mechanisms: sorption of dissolved contaminants and filtration of colloidal contaminants by the matrix. These interaction processes, which determine the breakthrough curves and their tailing behavior, are kinetically controlled. Sorption constants are derived from batch experiments. Sorption rates are obtained by the simulation and are compared with the values of the filtration rate predicted by the colloid filtration theory.
Databáze:	OpenAIRE
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