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Surfactant assisted removal of copper (II), cadmium (II), and lead (II) from a sandy soil

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Surfactant assisted removal of copper (II), cadmium (II), and lead (II) from a sandy soil

Shalchian, Hesam (2006) Surfactant assisted removal of copper (II), cadmium (II), and lead (II) from a sandy soil. Masters thesis, Concordia University.

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Abstract

The role of surfactants in remediation of metal contaminated soils is a subject that has gained considerable scientists attention in many related research fields. In the present study, surfactants with and without a chelating agent are used to remove Cu (II), Cd (II), and Pb (11) from an artificially contaminated sandy soil. SDS (sodium dodecyl sulfate) and AOT (sodium dioctyl sulfosuccinate) are the anionic surfactants. Tx-100 (Triton x100) is the nonionic surfactant and EDTA (Disodium ethylenediamine tetraacetate) is the chelating agent selected to form the extracting solutions. Batch and column tests were conducted at room temperature (22{493}C ± 2{493}C. Batch results indicated that replacing distilled water with SDS can enhance the metal removal rates by a factor of 5.5, 28.8, and 29.1 for Cu (11), Cd (II), and Pb (II), respectively. A combination of SDS and EDTA was found to be an ideal extracting solution for both batch and column tests. In column tests, the mixture was able to remove about 83%, 88%, and 70% of Cu (II), Cd (II), and Pb (II) respectively. This study shows that SDS is an effective extracting reagent. Therefore, it may be considered for in-situ remediation of metal contaminated sites. Results related to competition and interference among metals to get adsorbed or desorbed to sandy soils, are also briefly presented. Lastly, the effect of flow rate and aging of contaminants are discussed.

Divisions:Concordia University > Faculty of Engineering and Computer Science > Building, Civil and Environmental Engineering
Item Type:Thesis (Masters)
Authors:Shalchian, Hesam
Pagination:xiii, 84, [12] leaves : ill. ; 29 cm.
Institution:Concordia University
Degree Name:M.A. Sc.
Program:Building, Civil and Environmental Engineering
Date:2006
Thesis Supervisor(s):Ramamurthy, Amruthur S
ID Code:9194
Deposited By:Concordia University Libraries
Deposited On:18 Aug 2011 14:46
Last Modified:30 Nov 2011 16:42
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