Modeling contaminant transport and remediation at the Aksa acrylonitrile spill site.

Şengör, Sema Sevinç


Modeling contaminant transport and remediation at an acrylonitrile spill site in Turkey
Sengor, S. Sevinc; Ünlü, Kahraman (2013-07-01)
The August 1999 earthquake in Turkey damaged three acrylonitrile (AN) storage tanks at a plant producing synthetic fiber by polymerization. A numerical modeling study was carried out to analyze the groundwater flow and contaminant (AN) transport at the spill site. This study presents the application of a numerical groundwater model to determine the hydrogeological parameters of the site, where such data were not available during the field surveys prior to the simulation studies. The two- and three-dimension...
Modeling chromium dissolution and leaching from chromite ore-processing residue
Yalcin, S; Ünlü, Kahraman (Mary Ann Liebert Inc, 2006-01-01)
Chromium has been widely used in many industrial applications. As a result of chromite ore processing, large amounts of chromite ore processing residue (COPR) material that can be classified as hazardous have been produced and released into the environment. Therefore, knowledge of migration behavior and leaching rates of chromium through waste materials are of primary concern for environmentally sound management of hazardous wastes. Leaching rates of total Cr and Cr(VI) were studied experimentally using lab...
Modeling dissolved oxygen dynamics and hypoxia
Peña, M. A.; Katsev, S.; Oguz, T.; Gilbert, D. (Copernicus GmbH, 2010-3-9)
<jats:p>Abstract. Hypoxia conditions are increasing throughout the world, influencing biogeochemical cycles of elements and marine life. Hypoxia results from complex interactions between physical and biogeochemical processes, which can not be understood by observations alone. Models are invaluable tools at studying system dynamics, generalizing discrete observations and predicting future states. They are also useful as management tools for evaluating site-specific responses to management scenarios. Here we ...
Modeling natural attenuation of petroleum hydrocarbons (btex) in heterogeneous aquifers
Uçankuş, Tuğba; Ünlü, Kahraman; Department of Environmental Engineering (2005)
Natural Attenuation can be an effective cleanup option for remediation of Groundwater contamination by BTEX. One of the important aspects of the methodology that has been recognized recently is that mass removal rates, the most important parameters used to determine effectiveness of the methodology, is controlled by groundwater flow regime, which to a large extent controlled by aquifer heterogeneity. Considering this recognition, the primary objective of this research is to quantitatively describe the relat...
Modeling anaerobic dechlorination of polychlorinated biphenyls
Demirtepe, Hale; İmamoğlu, İpek; Department of Environmental Engineering (2012)
This study aims to investigate the fate of polychlorinated biphenyls (PCBs) in sediments via using an anaerobic dechlorination model (ADM). PCBs are ubiquitous environmental pollutants, accumulated mostly in aquatic sediments. Significant attention was placed on the anaerobic dechlorination of PCBs since this process leads to the conversion of highly-chlorinated biphenyls to lower chlorinated ones, resulting in less toxic and more biodegradable congeners. An ADM was developed previously for the identificati...
Citation Formats
S. S. Şengör, “Modeling contaminant transport and remediation at the Aksa acrylonitrile spill site.,” Middle East Technical University, 2002.