Nonlocal transport of chemically reactive, degradable species in heterogeneous porous media. Final report

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One of the most significant challenges facing environmental engineers and scientists is predicting the movement and degradation of chemicals in hierarchical porous media. The distribution of subsurface properties is poorly known because of the inaccessibility of the subsurface environment and the random nature of the geologic deposition process. In addition, the subsurface often possesses distinct physical, chemical and biological hierarchies, which complicates the ability to successfully characterize and thus predict property distributions and processes with information from a limited number of sample locations over a limited number of scales. Knowledge of the spatial structure of microbial populations and activities and ... continued below

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19 p.

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Cushman, J.H. July 30, 1998.

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Description

One of the most significant challenges facing environmental engineers and scientists is predicting the movement and degradation of chemicals in hierarchical porous media. The distribution of subsurface properties is poorly known because of the inaccessibility of the subsurface environment and the random nature of the geologic deposition process. In addition, the subsurface often possesses distinct physical, chemical and biological hierarchies, which complicates the ability to successfully characterize and thus predict property distributions and processes with information from a limited number of sample locations over a limited number of scales. Knowledge of the spatial structure of microbial populations and activities and the dynamic environmental factors that control this spatial structure are important in characterizing sites for remediation and disposal, and for the ability to effectively deliver nutrients to promote degradation and stabilization. To do so effectively requires a correct theoretical formulation of the problem, implementation of this formulation for predictive purposes, and even more importantly knowledge of what should be measured and how and when to measure it. The contents of this report is as follows: (Section 2) statement of goals, (Section 3) development of nonlocal models for chemical transport with uncertainty in biological, physical and chemical data, (Section 4) a discussion of molecular-scale phenomena of relevance to adsorption and flow in nanoporous materials such as clays, (Section 5) meso and macroscale models of flow in, and deformation of, clays, (Section 6) collaborative efforts with DOE labs, (Section 7) P.I. awards, (Section 8) publications resulting from the research efforts supported through this grant, and finally students supported under this grant.

Physical Description

19 p.

Notes

OSTI as DE99001431

Medium: P; Size: 19 p.

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  • Other Information: PBD: 30 Jul 1998

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  • Other: DE99001431
  • Report No.: DOE/ER/60310--1(7/98)
  • Grant Number: FG02-85ER60310
  • DOI: 10.2172/303999 | External Link
  • Office of Scientific & Technical Information Report Number: 303999
  • Archival Resource Key: ark:/67531/metadc679879

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  • July 30, 1998

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • April 7, 2017, 6:55 p.m.

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Cushman, J.H. Nonlocal transport of chemically reactive, degradable species in heterogeneous porous media. Final report, report, July 30, 1998; United States. (digital.library.unt.edu/ark:/67531/metadc679879/: accessed October 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.