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Release and migration of radioactive...

Diaz-Martinez, Jose Raul.

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Release and migration of radioactive species from repositories.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Release and migration of radioactive species from repositories./
Author:	Diaz-Martinez, Jose Raul.
Description:	225 p.
Notes:	Directors: Morton E. Wacks; Barry D. Ganapol.
Contained By:	Dissertation Abstracts International63-08B.
Subject:	Engineering, Nuclear. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3061011
ISBN:	0493767207

Release and migration of radioactive species from repositories.
Diaz-Martinez, Jose Raul.

Release and migration of radioactive species from repositories. - 225 p.

Directors: Morton E. Wacks; Barry D. Ganapol.

Thesis (Ph.D.)--The University of Arizona, 2002.

The long-term disposal of commercially generated high-level wastes (HLW) is of principal importance for the public safety because these wastes can be released to the environment and reach the biosphere. One solution for the isolation of the wastes is to put them into deep geologic repository.

ISBN: 0493767207Subjects--Topical Terms:

1043651
Engineering, Nuclear.

Release and migration of radioactive species from repositories.
LDR:02655nam 2200325 a 45 001 926773
005 20110422
008 110422s2002 eng d
020 $a 0493767207
035 $a (UnM)AAI3061011
035 $a AAI3061011
040 $a UnM $c UnM
100 1 $a Diaz-Martinez, Jose Raul. $3 1250357
245 1 0 $a Release and migration of radioactive species from repositories.
300 $a 225 p.
500 $a Directors: Morton E. Wacks; Barry D. Ganapol.
500 $a Source: Dissertation Abstracts International, Volume: 63-08, Section: B, page: 3888.
502 $a Thesis (Ph.D.)--The University of Arizona, 2002.
520 $a The long-term disposal of commercially generated high-level wastes (HLW) is of principal importance for the public safety because these wastes can be released to the environment and reach the biosphere. One solution for the isolation of the wastes is to put them into deep geologic repository.
520 $a One way to predict the fate of the released radioactive species from deep geologic repository is to use a mathematical model. The mathematical model can be used to predict the transport in space and time of the radioactive species. Using as input parameters the characteristics for a specific place we can decide if a place can be used as a repository. We can cite here the “Yucca Mountain Site” in Nye County, Nevada, which is currently planned to be a HLW repository.
520 $a We developed a three dimensional model of subsurface flow and reactive chemical transport. The second order partial differential equations governing the groundwater flow in saturated and unsaturated zones, and the advection-diffusion equation for the transport of solute are solved using the finite element method (FEM). The chemical phenomena are treated using the concept of point chemical equilibrium at each point of the mesh used in the finite element scheme. The Newton-Raphson method is employed to calculate the chemical equilibrium. The solute transport equation and the point chemical equilibrium are solved simultaneously using an iterative scheme. Radioactive decay is included in the solute transport equation and the chemical species phenomena of complexation, surface adsorption, ion-exchange, oxidation-reduction and precipitation are included in the point chemical equilibrium.
590 $a School code: 0009.
650 4 $a Engineering, Nuclear. $3 1043651
650 4 $a Environmental Sciences. $3 676987
650 4 $a Hydrology. $3 545716
690 $a 0388
690 $a 0552
690 $a 0768
710 2 0 $a The University of Arizona. $3 1017508
773 0 $t Dissertation Abstracts International $g 63-08B.
790 $a 0009
790 1 0 $a Ganapol, Barry D., $e advisor
790 1 0 $a Wacks, Morton E., $e advisor
791 $a Ph.D.
792 $a 2002
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3061011