[article] | Title : | Perchloroetylene and Dibutyltin Dichloride Removal from Packed Column by Surfactant Solution | | Material Type: | printed text | | Authors: | Seelawut Damrongsiri, Author ; Chantra Tongcumpou, Author ; Sabatini, David A., Author | | Publication Date: | 2014 | | Article on page: | p.1-15 | | Languages : | English (eng) |
in Applied environmental research > Vol.36 No.3 (May-Aug) 2014 [10/10/2014] . - p.1-15| Keywords: | Surfactant.Solubilization.Organometallic compound. | | Abstract: | Surfactant enhanced remediation is viewed as a potential method for removing organometallic compounds from contaminated aquifers. Dibutyltin dichloride (DBT), as a representative organometallic compound, was applied in sand packed columns to observe its solubilization behavior compared to that of perchloroetylene (PCE), a normal organic solvent. Ottawa sand was used as the porous media. A mixture of DBT and PCE was applied as the contaminant. The tracer study exhibited the plug flow condition with a retention time of 79.9 min. The surfactant solution was a mixture of 3.6 wt.% SDHS and 0.4 wt.% C16DPDS with various concentrations of CaCl2.The column experiments were carried out by single and gradient surfactant systems. The effluent exhibited a general solubilization pattern for PCE, governed by a rate limiting mechanism. However, the concentration of DBT in the effluent observed in every experiment was just a slice of its solubilization capacity. The adsorption of DBT on the sand was suspected to be the cause of the problem. The solubilization of DBT by a surfactant was ineffective at removing DBT from the contaminated media. It may be concluded that DBT exhibits the properties of both an organic and inorganic compound; it could be solubilized by a surfactant and absorbed strongly on sand. Nevertheless, the results indicate that trapped DBT could be removed by mobilization in the form of a PCE-DBT mixture and that adsorption could be prevented by a very low pH condition. | | Link for e-copy: | https://www.tci-thaijo.org/index.php/aer/issue/view/2245 | | Record link: | http://libsearch.siu.ac.th/siu/opac_css/index.php?lvl=notice_display&id=24029 |
[article] Perchloroetylene and Dibutyltin Dichloride Removal from Packed Column by Surfactant Solution [printed text] / Seelawut Damrongsiri, Author ; Chantra Tongcumpou, Author ; Sabatini, David A., Author . - 2014 . - p.1-15. Languages : English ( eng)
in Applied environmental research > Vol.36 No.3 (May-Aug) 2014 [10/10/2014] . - p.1-15| Keywords: | Surfactant.Solubilization.Organometallic compound. | | Abstract: | Surfactant enhanced remediation is viewed as a potential method for removing organometallic compounds from contaminated aquifers. Dibutyltin dichloride (DBT), as a representative organometallic compound, was applied in sand packed columns to observe its solubilization behavior compared to that of perchloroetylene (PCE), a normal organic solvent. Ottawa sand was used as the porous media. A mixture of DBT and PCE was applied as the contaminant. The tracer study exhibited the plug flow condition with a retention time of 79.9 min. The surfactant solution was a mixture of 3.6 wt.% SDHS and 0.4 wt.% C16DPDS with various concentrations of CaCl2.The column experiments were carried out by single and gradient surfactant systems. The effluent exhibited a general solubilization pattern for PCE, governed by a rate limiting mechanism. However, the concentration of DBT in the effluent observed in every experiment was just a slice of its solubilization capacity. The adsorption of DBT on the sand was suspected to be the cause of the problem. The solubilization of DBT by a surfactant was ineffective at removing DBT from the contaminated media. It may be concluded that DBT exhibits the properties of both an organic and inorganic compound; it could be solubilized by a surfactant and absorbed strongly on sand. Nevertheless, the results indicate that trapped DBT could be removed by mobilization in the form of a PCE-DBT mixture and that adsorption could be prevented by a very low pH condition. | | Link for e-copy: | https://www.tci-thaijo.org/index.php/aer/issue/view/2245 | | Record link: | http://libsearch.siu.ac.th/siu/opac_css/index.php?lvl=notice_display&id=24029 |
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