Long-term ERT monitoring of biogeochemical changes of an aged hydrocarbon contamination

D Caterina, AF Orozco, F Nguyen - Journal of contaminant hydrology, 2017 - Elsevier
Adequate management of contaminated sites requires information with improved spatio-
temporal resolution, in particular to assess bio-geochemical processes, such as the …

Mapping Leachate Pathways in Aging Mining Tailings Pond Using Electrical Resistivity Tomography

MAH Ali, FM Mewafy, W Qian, F Alshehri, S Almadani… - Minerals, 2023 - mdpi.com
Mining activities often leave behind a legacy of environmental challenges, with aging
tailings ponds representing a significant concern due to their potential for leachate formation …

Numerical Simulation of Geophysical Models to Detect Mining Tailings' Leachates within Tailing Storage Facilities

MAH Ali, FM Mewafy, W Qian, AR Faruwa, A Shebl… - Water, 2024 - mdpi.com
The effective detection and monitoring of mining tailings' leachates (MTLs) plays a pivotal
role in environmental protection and remediation efforts. Electrical resistivity tomography …

Self-potential signals generated by the corrosion of buried metallic objects with application to contaminant plumes

JB Rittgers, A Revil, M Karaoulis, MA Mooney… - Geophysics, 2013 - library.seg.org
ABSTRACT Large-amplitude (> 100 mV) negative electric (self)-potential anomalies are
often observed in the vicinity of buried metallic objects and ore bodies or over groundwater …

High‐resolution magnetic susceptibility measurements for investigating magnetic mineral formation during microbial mediated iron reduction

EA Atekwana, FM Mewafy, G Abdel Aal… - Journal of …, 2014 - Wiley Online Library
Disimilatory iron‐reducing bacteria play an important role in the reduction of Fe (hydr)
oxides and the production of secondary solid‐iron mineral phases that can have magnetic …

Methanogens and their syntrophic partners dominate zones of enhanced magnetic susceptibility at a petroleum contaminated site

CL Beaver, EA Atekwana, BA Bekins… - Frontiers in Earth …, 2021 - frontiersin.org
Geophysical investigations documenting enhanced magnetic susceptibility (MS) within the
water table fluctuation zone at hydrocarbon contaminated sites suggest that MS can be used …

Geophysical signatures of disseminated iron minerals: A proxy for understanding subsurface biophysicochemical processes

GZ Abdel Aal, EA Atekwana… - Journal of Geophysical …, 2014 - Wiley Online Library
Previous studies have linked biogeophysical signatures to the presence of iron minerals
resulting from distinct biophysicochemical processes. Utilizing geophysical methods as a …

Evidence that bio-metallic mineral precipitation enhances the complex conductivity response at a hydrocarbon contaminated site

FM Mewafy, DD Werkema Jr, EA Atekwana… - Journal of Applied …, 2013 - Elsevier
The complex conductivity signatures of a hydrocarbon contaminated site, undergoing
biodegradation, near Bemidji, Minnesota were investigated. This site is characterized by a …

Estella Atekwana: Autobiographical Notes

EA Atekwana - Annual Review of Earth and Planetary Sciences, 2023 - annualreviews.org
I describe my career journey from a young girl in Cameroon, West Africa, to a trailblazing
geophysicist to my current role as dean. I chronicle my time as a student, the transition to …

Reduction and transformation of nanomagnetite and nanomaghemite by a sulfate-reducing bacterium

Y Zhou, Y Gao, Q Xie, J Wang, Z Yue, L Wei… - … et Cosmochimica Acta, 2019 - Elsevier
Magnetite and maghemite are important components of iron oxides that determine the
magnetic properties of rocks, soils, and sediments, and are also materials with broad …