Dynamics of Coupled Contaminant and Microbial Transport in Heterogeneous Porous Media: Purdue Component

Technical Report · Thu Jun 01 04:00:00 EDT 2000

DOI:https://doi.org/10.2172/765221· OSTI ID:765221

Cushman, J H ^[1]

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1. Purdue University

Dynamic microbial attachment/detachment occurs in subsurface systems in response to changing environmental conditions caused by contaminant movement and degradation. Understanding the environmental conditions and mechanisms by which anaerobic bacteria partition between aqueous and solid phases is a critical requirement for designing and evaluating in situ bioremediation efforts. This interdisciplinary research project, of which we report only the Purdue contribution, provides fundamental information on the attachment/detachment dynamics of bacteria in heterogeneous porous media. Fundamental results from the Purdue collaboration are: (a) development of a matched-index method for obtaining 3-D Lagrangian trajectories of microbial sized particles transporting within porous media or microflow cells, (b) application of advanced numerical methods to optimally design a microflow cell for studying anaerobic bacterial attachment/detachment phenomena, (c) development of two types of models for simulating bacterial movement and attachment/detachment in microflow cells and natural porous media, (d) application of stochastic analysis to upscale pore scale microbial attachment/detachment models to natural heterogeneous porous media, and (e) evaluation of the role nonlocality plays in microbial dynamics in heterogeneous porous media.

• Research Organization: USDOE Idaho Operations Office, Idaho Falls, ID (US); Purdue University, West Lafayette, IN (US)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: FG07-97ER62354
• OSTI ID: 765221
• Report Number(s): DOE/ER/62354
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ANAEROBIC BACTERIA
BACTERIA
DESIGN
EVALUATION
HETEROGENEOUS POROUS MEDIA
IN SITU BIOREMEDIATION
LAGRANGIAN FUNCTION
LAGRANGIAN TRAJECTORIES
MATCHED-INDEX METHOD
MICROBIAL ATTACHMENT/DETACHMENT
MICROFLOW CELL
NONLOCALITY
STOCHASTIC ANALYSIS
SUBSURFACE
TRAJECTORIES
TRANSPORT