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Removal of zinc, lead and nickel from contaminated soil by electro-kinetic technology under the influence of washing and buoyance forces with different purging solutions

Faisal, AAH, Alkhateeb, RW, Al-Hashimi, OA, Shubbar, AAF and Saleh, B (2021) Removal of zinc, lead and nickel from contaminated soil by electro-kinetic technology under the influence of washing and buoyance forces with different purging solutions. Separation Science and Technology. ISSN 0149-6395

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Removal of zinc, lead and nickel from contaminated soil by electro-kinetic technology under the influence of washing and buoyance forces with different purging solutions.pdf - Accepted Version
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Abstract

The effects of the washing process, purging solution, and buoyance force (inclined topography action) on the effectivity of the electro-kinetic method used to remediate of a silty clay loam and natural soils contaminated with Zn, Pb, and/or Ni were investigated by applying 12 different experiments. The results revealed that the washing process and buoyance force can cause a small increase in the Zn removal efficiency (≤ 31%) when compared with non-washing approach using distilled water purging solution. Using 0.1 M of EDTA solution for the soil contaminated with listed metals in combination with washing can lead to significant increase in the removal efficiencies with percentages not greater than 58.4, 60.68 or 42.8%, respectively. In the presence of EDTA, however, the majority of metals passed through the soil media to the anode area. In contrast, these metals are accumulated near the cathodic region in the presence of distilled water. The results demonstrated that the buoyance force (resulted from inclination angle of 30o ) with EDTA had adverse influence on the metal profile along the treated soil. Finally, the results certified that EDTA in electrokinetic process coupled with soil washing is a new hybrid technique which achieved Pb removal efficiency from natural soil reached to 58% by improving the solubilization and transport of metal ions.

Item Type: Article
Additional Information: This is an Accepted Manuscript version of the following article, accepted for publication in Separation Science and Technology. Ayad A. H. Faisal, Rasha W. Alkhateeb, Osamah A. Al-Hashimi, Ali Shubbar & B. Saleh (2021) Removal of zinc, lead and nickel from contaminated soil by electro-kinetic technology under the influence of washing and buoyance forces with different purging solutions, Separation Science and Technology, DOI: 10.1080/01496395.2021.1976208. It is deposited under the terms of the Creative Commons Attribution-NonCommercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Uncontrolled Keywords: 0301 Analytical Chemistry, 0904 Chemical Engineering, 0907 Environmental Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TP Chemical technology
Divisions: Civil Engineering & Built Environment
Publisher: Taylor & Francis
Date Deposited: 29 Sep 2021 11:22
Last Modified: 29 Sep 2021 11:30
DOI or Identification number: 10.1080/01496395.2021.1976208
URI: https://researchonline.ljmu.ac.uk/id/eprint/15488

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