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Biosurfactant enhanced remediation of heavy metal contaminated soil

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Biosurfactant enhanced remediation of heavy metal contaminated soil

Wang, Suiling (2003) Biosurfactant enhanced remediation of heavy metal contaminated soil. Masters thesis, Concordia University.

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Abstract

Soil flushing, an in situ process, can be used to remove metals from the soil by water or additives. The use of biosurfactants to enhance remediation of contaminants has recently received increasing interest, though research in this area has been limited. In this study, column experiments were conducted in three main phases. The first phase was to investigate the main parameters that influence the foam quality and stability. Foam generated by a rhamnolipid solution displayed high qualities from 90% to 99% and stabilities varied from 17 to 41 minutes. The second phase was carried out to study the pressure gradient build-up in the soil column with foam flowing through under different conditions (flow rate, foam quality, biosurfactant solution concentration), which varied from 0.3 kPa/cm to 6.6 kPa/cm. In the third phase, the biosurfactant (JBR425, mixed rhamnolipids) foam enhanced removal of heavy metals (Cd, Ni) from the contaminated soil was investigated. The soil was characterized as a sandy soil contaminated with Cd (1706 ppm) and Ni (2010 ppm). (Abstract shortened by UMI.)

Divisions:Concordia University > Faculty of Engineering and Computer Science > Building, Civil and Environmental Engineering
Item Type:Thesis (Masters)
Authors:Wang, Suiling
Pagination:xviii, 133 leaves : ill. ; 29 cm.
Institution:Concordia University
Degree Name:Theses (M.A.Sc.)
Program:Building, Civil and Environmental Engineering
Date:2003
Thesis Supervisor(s):Mulligan, Catherine N
ID Code:2167
Deposited By:Concordia University Libraries
Deposited On:27 Aug 2009 13:25
Last Modified:08 Dec 2010 10:25
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