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/10.2172/792910· OSTI ID:792910

Cushman, J H ^[1]; Fletcher, Madilyn

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1. Purdue University, West Lafayette

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: University of South Carolina (US)
• Sponsoring Organization: (US)
• DOE Contract Number: FG07-97ER62355
• OSTI ID: 792910
• Report Number(s): DOE/ER/62355; EMPS 54681; OSTI 765221
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
BACTERIA
BIODEGRADATION
BIOREMEDIATION
ENVIRONMENTAL TRANSPORT
HETEROGENEOUS POROUS MEDIA
LAGRANGIAN FUNCTION
LAGRANGIAN TRANJECTORIES
MATCHED-INDEX METHOD
MICROFLOW CELL
NONLOCALITY
PLANNING
POLLUTANTS
POROUS MATERIALS
REMEDIAL ACTION
STOCHASTIC ANALYSIS