IESc Seminar Series: Surfactant-enhanced Permanganate Oxidation for Pool-dominated TCE Source Zones in Heterogeneous Porous Media - By Assoc. Prof. Nihat Hakan Akyol

Monday, April 3, 2023

Institute of Environmental Sciences Seminar Series

“Surfactant-enhanced Permanganate Oxidation for Pool-dominated TCE Source Zones in Heterogeneous Porous Media”

By Assoc. Prof. Nihat Hakan Akyol

Kocaeli University & University of Alabama

We cordially invite you to our seminar “Surfactant-enhanced Permanganate Oxidation for Pool-dominated TCE Source Zones in Heterogeneous Porous Media” by Assoc. Prof. Nihat Hakan Akyol, Kocaeli University & University of Alabama.

When: 3 April, Monday, 14:00-15:00

Where: Institute of Environmental Sciences Meeting Room

Contact: for any questions.


Contamination of groundwaters by chlorinated solvents such as trichloroethylene (TCE) is a widespread problem around the world that causes serious threat for human health. Chlorinated solvents enter the subsurface as dense non-aqueous phase liquids (DNAPL) and accumulate in aquifers where the DNAPL is most likely to pool. These pools become a long-term source zone for groundwater contamination. Remediation of DNAPL source zones is crucial for protecting aquifer systems and groundwater potential. Remediation techniques used to remove chlorinated solvents from the subsurface environment include combining chemical oxidation (ISCO) and surfactant enhanced aquifer remediation (SEAR).  Results showed that the distribution and the emplacement of organic liquid and flow-field heterogeneity had a significant influence on remediation and removal for both flushing solution (SDS and water). It was postulated that when SDS/MnO4 was applied with sufficient dosage and provided enough contact time, pool-dominated source zones could be remediated more efficiently compared to surfactant flushing alone. As a result, the performance of technology depends on the site characteristics which are critical to characterize effective DNAPL remediation strategies for contaminated sites.

About Nihat Hakan Akyol:

Dr. Nihat Hakan Akyol completed his PhD in Contaminant Hydrogeology at Kocaeli University and is currently working as an Associate Professor at Kocaeli University. He has published numerous publications, supervised projects and graduate students. He has worked as Research Scientist at SWES Department at the University of Arizona. He has collaborations with The University of Alabama, the University of Arizona, New Mexico State University, Charles University and Bogazici University. He is currently serving as Adjunct Faculty Member at Department of Geology at The University of Alabama. He currently focuses on hydrogeology, soil and groundwater remediation, fate and transport of contaminants, geothermal energy and environmental risk assessment.