Electrokinetic remediation of petroleum hydrocarbon contaminated soil (I)
Article
Article Title | Electrokinetic remediation of petroleum hydrocarbon contaminated soil (I) |
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ERA Journal ID | 210427 |
Article Category | Article |
Authors | Saini, Anish (Author), Bekele, Dawit Nega (Author), Chadalavada, Sreenivasulu (Author), Fang, Cheng (Author) and Naidu, Ravi (Author) |
Journal Title | Environmental Technology and Innovation |
Journal Citation | 23, pp. 1-9 |
Article Number | 101585 |
Number of Pages | 9 |
Year | 2021 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 2352-1864 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.eti.2021.101585 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S2352186421002339 |
Abstract | The remediation of petroleum hydrocarbons (TPH) in a contaminated soil by electrokinetic (EK) treatment was studied in the laboratory. The effects of applying a constant electrical current on soil pH, moisture content, electrical conductivity (EC), temperature, and the concentrations of three fractions of TPH (C10–C16, C17–C34 and C35–C40) were investigated. The experiment was run for seven days and soil samples were collected at the end of the 7 day period for analysis of soil pH and TPH concentration. There were extreme pH conditions near the electrodes. At the end of the experiment there was around a 37% reduction of C10–C16 chain compounds compared to the initial concentration of 164 ± 18 mg/kg. The study investigated TPH remediation to a depth of 24 cm, which is significantly more than most studies of EK remediation of TPH-contaminated soils. We observed reductions in TPH concentrations even at a depth of 24 cm. The spatial distribution of reductions in TPH concentrations was also studied and it was observed that more remediation occurred near the cathodes than near the anodes. Further, the greatest reductions in TPH concentrations were recorded near the electrodes in the lowest and middle parts of the experimental set-up. The application of electrokinetics to remediate TPH-contaminated soils could be a viable option as an in situ remediation technology. |
Keywords | Electrokinetic (EK) remediation; In-situ remediation; Petroleum hydrocarbons (TPH); Spatial distribution of TPH reduction |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 410404. Environmental management |
410402. Environmental assessment and monitoring | |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Newcastle |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6z14/electrokinetic-remediation-of-petroleum-hydrocarbon-contaminated-soil-i
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