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Design of the surfactant enhanced electrokinetic system for hydrocarbons removal from clayey soils in pilot scale conditions

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Design of the surfactant enhanced electrokinetic system for hydrocarbons removal from clayey soils in pilot scale conditions

Hatem, George (1999) Design of the surfactant enhanced electrokinetic system for hydrocarbons removal from clayey soils in pilot scale conditions. Masters thesis, Concordia University.

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Abstract

In soils rich with humus, natural organic matter, and clayey fractions, the partition of hydrophobic organic compounds (HOCs) to the solid phase is much higher than to the aqueous phase. This fact can be related to their sorption on organic fraction of soil, and their higher affinity to the clayey material. Cleanup of such contaminated sites using conventional methods such as pump-and-treat or excavation and further thermal destruction can be lengthy, expensive and in some cases ineffective. Electrokinetics (EK), which is an emerging technology due to its applicability in low permeable soils (clays), seems to be a promising methodology for solving the above mentioned problems. EK is associated with applying a DC current between electrodes inserted into contaminated soil to promote a movement of species into both perforated electrodes, and further extraction of contaminants through these electrodes. However several works have shown some limitations in its use. The presented work is a combined effort of developing an improved EK system being able to apply surfactants to HOC-contaminated clayey soils. This work was concentrated on the design, which could be applied in natural conditions and would eliminate the development of a high pH zone in the cathode area, avoid precipitation and decrease the electrolysis of electrodes.

Divisions:Concordia University > Faculty of Engineering and Computer Science > Building, Civil and Environmental Engineering
Item Type:Thesis (Masters)
Authors:Hatem, George
Pagination:xxi, 299 leaves : ill. (some col.) ; 29 cm.
Institution:Concordia University
Degree Name:Theses (M.A.Sc.)
Program:Building, Civil and Environmental Engineering
Date:1999
Thesis Supervisor(s):Elektorowicz, Maria
ID Code:1089
Deposited By:Concordia University Libraries
Deposited On:27 Aug 2009 13:16
Last Modified:08 Dec 2010 10:18
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