Journal ArticleDOI
Evaluation of vadose zone biodegradation of BTX vapours
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TLDR
In this paper, a 2D numerical model incorporating vapour-phase diffusion, advection, sorption and biodegradation was used to simulate the effect of a building floor slab on transport processes.About:
This article is published in Journal of Contaminant Hydrology.The article was published on 2000-12-01. It has received 101 citations till now. The article focuses on the topics: Oxygen transport & Vadose zone.read more
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Multicomponent reactive transport modeling in variably saturated porous media using a generalized formulation for kinetically controlled reactions
TL;DR: A generalized formulation for kinetically controlled reactions has been developed and incorporated into a multicomponent reactive transport model to facilitate the investigation of a large variety of problems involving inorganic and organic chemicals in variably saturated media as mentioned in this paper.
Journal ArticleDOI
Effect of vapor source-building separation and building construction on soil vapor intrusion as studied with a three-dimensional numerical model.
TL;DR: A three-dimensional numerical model of the soil vapor-to-indoor air pathway is developed and used as a tool to anticipate not-yet-measured relationships between the vapor attenuation coefficient, alpha, and vapor source-building lateral separation, vapor source depth, and building construction characteristics for nondegrading chemicals.
Journal ArticleDOI
Use of dissolved and vapor‐phase gases to investigate methanogenic degradation of petroleum hydrocarbon contamination in the subsurface
TL;DR: In the vadose zone, regions of Ar and N2 depletion and enrichment are indicative of methanogenic and methanotrophic zones, and concentration gradients between the regions suggest that reaction-induced advection can be an important gas transport process as mentioned in this paper.
Journal ArticleDOI
Indoor vapor intrusion with oxygen-limited biodegradation for a subsurface gasoline source.
TL;DR: Results indicate vapor intrusion of petroleum hydrocarbons can be significantly less than indicated by estimates that neglect biodegradation.
Journal ArticleDOI
Simulating the Effect of Aerobic Biodegradation on Soil Vapor Intrusion into Buildings: Influence of Degradation Rate, Source Concentration, and Depth
TL;DR: The results suggest that aerobic biodegradation could play a significant role in reducing vapor intrusion into buildings (decreased alpha-values) relative to the no-biodegradation case, with the significance of aerobicBiodegradation increasing with increasing vapor source depth, decreasing vapor source concentration, and increasing first-order biodegrading rate.
References
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Journal ArticleDOI
The Growth of Bacterial Cultures
TL;DR: Bacterial growth is considered as a method for the study of bacterial physiology and biochemistry, with the interpretation of quantitative data referring to bacterial growth limited to populations considered genetically homogeneous.
Journal ArticleDOI
Permeability of porous solids
R. J. Millington,J. P. Quirk +1 more
TL;DR: In this article, an expression was derived to describe both saturated and unsaturated permeability of porous media in terms of the pore size distribution as obtained from mercury-injection data or water-desorption isotherms.
Journal ArticleDOI
Models for mineralization kinetics with the variables of substrate concentration and population density.
S Simkins,M Alexander +1 more
TL;DR: It is concluded that much of the diversity in shapes of mineralization curves is a result of the interactions of substrate concentration and population density.
Book
Techniques in microbial ecology
TL;DR: Theoretical & Applied Aspects of Bioremediation: The Influence of Microbiological Processes on Organic Contaminant Compounds in Field Sites and Numerical Classification of Microorganisms is presented.
Journal ArticleDOI
Effects of Atmospheric Pressures on Gas Transport in the Vadose Zone
Joel Massmann,Daniel F. Farrier +1 more
TL;DR: In this paper, a single component advection-dispersion equation is used to estimate gas fluxes due to the combined effects of Knudsen diffusion, multicomponent molecular diffusion, and viscous flow.
Related Papers (5)
Simulating the Effect of Aerobic Biodegradation on Soil Vapor Intrusion into Buildings: Influence of Degradation Rate, Source Concentration, and Depth
Heuristic model for predicting the intrusion rate of contaminant vapors into buildings
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