Improved electrokinetic process for capturing heavy metals in contaminated soil

Ghobadi, Romina

Improved electrokinetic process for capturing heavy metals in contaminated soil

Ghobadi, Romina

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Publication Type:: Thesis
Issue Date:: 2021

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Field	Value	Language
dc.contributor.author	Ghobadi, Romina
dc.date.accessioned	2022-01-19T00:24:36Z
dc.date.available	2022-01-19T00:24:36Z
dc.date.issued	2021
dc.identifier.uri	http://hdl.handle.net/10453/153320
dc.description	University of Technology Sydney. Faculty of Engineering and Information Technology.	en_US.UTF-8
dc.description.abstract	Soil contamination is a worldwide problem affecting human health. Electrokinetic (EK) remediation is a promising electrochemical remediation technology for soil decontamination using low-intensity direct current and resulting in the mobilization of chemical contaminants through electromigration and electroosmosis. EK application in the heavy metals contaminated soil faces with a few obstacles such as high pH distribution and contaminants extraction from the zone near the cathode region. Therefore, this study focused on integrating the EK technique with different reactive filter media (RFM) of activated carbon (AC), biochar (BC) and compost (C), for the first time, without adding chemicals to facilitate the removal of metal ions from the contaminated soil. The performance of these RFMs in the EK system has been examined to select the best in terms of EK performance, regeneration, and contaminant removal. The overall removal efficiency of metal ions decreased as EK-C > EK-BC > EK-AC > EK. The findings demonstrated compost as a promising and reusable RFM for the efficient removal of heavy metals in contaminated natural soil. The results reported in this study should be useful in optimizing the design of the EK-RFM system and extending it to the field-scale applications.	en_US.UTF-8
dc.format	Thesis (PhD)
dc.language.iso	en_US	en_US.UTF-8
dc.relation	https://opus.lib.uts.edu.au/bitstream/10453/153320/2/02whole.pdf
dc.rights	The author owns the copyright in this thesis including all reproduction and reuse rights for the work. The work may not be altered without the permission of the copyright owner. Attribution is essential when quoting or paraphrasing from this thesis.
dc.rights	au.edu.uts.lib/ppc
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Improved electrokinetic process for capturing heavy metals in contaminated soil	en_US.UTF-8
dc.type	Thesis
utslib.copyright.status	open_access	*

Abstract:

Soil contamination is a worldwide problem affecting human health. Electrokinetic (EK) remediation is a promising electrochemical remediation technology for soil decontamination using low-intensity direct current and resulting in the mobilization of chemical contaminants through electromigration and electroosmosis. EK application in the heavy metals contaminated soil faces with a few obstacles such as high pH distribution and contaminants extraction from the zone near the cathode region. Therefore, this study focused on integrating the EK technique with different reactive filter media (RFM) of activated carbon (AC), biochar (BC) and compost (C), for the first time, without adding chemicals to facilitate the removal of metal ions from the contaminated soil. The performance of these RFMs in the EK system has been examined to select the best in terms of EK performance, regeneration, and contaminant removal. The overall removal efficiency of metal ions decreased as EK-C > EK-BC > EK-AC > EK. The findings demonstrated compost as a promising and reusable RFM for the efficient removal of heavy metals in contaminated natural soil. The results reported in this study should be useful in optimizing the design of the EK-RFM system and extending it to the field-scale applications.

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http://hdl.handle.net/10453/153320