Organic contaminant transport and fate in the subsurface: Evolution of knowledge and understanding

HI Essaid, BA Bekins… - Water Resources Research, 2015 - Wiley Online Library
Toxic organic contaminants may enter the subsurface as slightly soluble and volatile
nonaqueous phase liquids (NAPLs) or as dissolved solutes resulting in contaminant plumes …

Soil and groundwater contamination by crude oil spillage: A review and implications for remediation projects in Nigeria

MA Adeniran, MA Oladunjoye, KO Doro - Frontiers in Environmental …, 2023 - frontiersin.org
Management of soil and groundwater resources has been recognized as essential to
meeting the sustainable development goals of Agenda 2063 of the African Union. As Africa's …

Residual-based adaptivity for two-phase flow simulation in porous media using physics-informed neural networks

JM Hanna, JV Aguado, S Comas-Cardona… - Computer Methods in …, 2022 - Elsevier
This paper aims to provide a machine learning framework to simulate two-phase flow in
porous media. The proposed algorithm is based on Physics-informed neural networks …

[HTML][HTML] Towards a digital twin for characterising natural source zone depletion: A feasibility study based on the Bemidji site

KS Lari, GB Davis, JL Rayner - Water research, 2022 - Elsevier
Natural source zone depletion (NSZD) of light non-aqueous phase liquids (LNAPLs) may be
a valid long-term management option at petroleum impacted sites. However, its future long …

Progression of natural attenuation processes at a crude-oil spill site: I. Geochemical evolution of the plume

IM Cozzarelli, BA Bekins, MJ Baedecker… - Journal of Contaminant …, 2001 - Elsevier
A 16-year study of a hydrocarbon plume shows that the extent of contaminant migration and
compound-specific behavior have changed as redox reactions, most notably iron reduction …

Crude oil at the Bemidji site: 25 years of monitoring, modeling, and understanding

HI Essaid, BA Bekins, WN Herkelrath, GN Delin - Groundwater, 2011 - Wiley Online Library
The fate of hydrocarbons in the subsurface near Bemidji, Minnesota, has been investigated
by a multidisciplinary group of scientists for over a quarter century. Research at Bemidji has …

Use of dissolved and vapor‐phase gases to investigate methanogenic degradation of petroleum hydrocarbon contamination in the subsurface

RT Amos, KU Mayer, BA Bekins… - Water Resources …, 2005 - Wiley Online Library
At many sites contaminated with petroleum hydrocarbons, methanogenesis is a significant
degradation pathway. Techniques to estimate CH4 production, consumption, and transport …

Distribution of microbial physiologic types in an aquifer contaminated by crude oil

BA Bekins, EM Godsy, E Warren - Microbial Ecology, 1999 - Springer
A bstract We conducted a plume-scale study of the microbial ecology in the anaerobic
portion of an aquifer contaminated by crude-oil compounds. The data provide insight into the …

Evidence for iron‐mediated anaerobic methane oxidation in a crude oil‐contaminated aquifer

RT Amos, BA Bekins, IM Cozzarelli, MA Voytek… - …, 2012 - Wiley Online Library
In a methanogenic crude oil contaminated aquifer near Bemidji, Minnesota, the decrease in
dissolved CH 4 concentrations along the groundwater flow path, along with the positive shift …

Vadose zone attenuation of organic compounds at a crude oil spill site—Interactions between biogeochemical reactions and multicomponent gas transport

S Molins, KU Mayer, RT Amos, BA Bekins - Journal of Contaminant …, 2010 - Elsevier
Contaminant attenuation processes in the vadose zone of a crude oil spill site near Bemidji,
MN have been simulated with a reactive transport model that includes multicomponent gas …