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Titolo:
COLLOID-FACILITATED CONTAMINANT TRANSPORT IN DISCRETELY FRACTURED POROUS-MEDIA .1. NUMERICAL FORMULATION AND SENSITIVITY ANALYSIS
Autore:
IBARAKI M; SUDICKY EA;
Indirizzi:
UNIV BRITISH COLUMBIA,DEPT GEOL SCI,6339 STORES RD VANCOUVER BC V6T 1Z4 CANADA UNIV WATERLOO,WATERLOO CTR GROUNDWATER RES WATERLOO ON N2L 3G1 CANADA
Titolo Testata:
Water resources research
fascicolo: 12, volume: 31, anno: 1995,
pagine: 2945 - 2960
SICI:
0043-1397(1995)31:12<2945:CCTIDF>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
PRECONDITIONED CONJUGATE GRADIENTS; DEEP BED FILTRATION; SINGLE FRACTURE; SAND COLUMNS; SIMULATION; AMERICIUM; PARTICLES; ROCK; FLOW; RADIONUCLIDES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
69
Recensione:
Indirizzi per estratti:
Citazione:
M. Ibaraki e E.A. Sudicky, "COLLOID-FACILITATED CONTAMINANT TRANSPORT IN DISCRETELY FRACTURED POROUS-MEDIA .1. NUMERICAL FORMULATION AND SENSITIVITY ANALYSIS", Water resources research, 31(12), 1995, pp. 2945-2960

Abstract

A two-dimensional numerical model is developed that incorporates the mechanism of colloid-facilitated transport in discretely fractured porous media. The numerical model accounts for aqueous phase contaminant transport in the fractures and the porous matrix, colloid transport inthe fractures, and sorption of the solute. Deep-bed filtration of thecolloids is accounted for, and the solute is allowed to sorb on both the mobile and filtered colloids. The numerical formulation allows foreither equilibrium or kinetic sorption reactions onto the fracture walls, the matrix solids, and the mobile and filtered colloids accordingto either a Langmuir or a Freundlich isotherm. The results of a series of simulations involving a system of parallel fractures explore the importance of mobile colloids on contaminant migration and indicate that if sorption onto the colloids is a slow kinetic process, then the mobile colloids may lead to significantly enhanced contaminant migration.

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Documento generato il 03/12/20 alle ore 04:49:22