Application of hexagonal two dimensional electrokinetic system on the nickel contaminated sediment and modelling the transport behavior of nickel during electrokinetic treatment

Krčmar, Dejan; Prica, Miljana; Cvetićanin, L.; Zukovic, M.; Dalmacija, Božo; Corba, Zoltan

doi:10.1016/j.seppur.2017.10.008

Cited by 19 publications

(18 citation statements)

References 27 publications

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“…However, the operating time was an important parameter, as it significantly influences decontamination efficiency and energy consumption. The shorter the operation time, the smaller the energy consumption [ 55 ]. Although EKR C 0.5 had the lowest energy consumption, the migration rate was too low to achieve the remediation of contaminated soil.…”

Section: Resultsmentioning

confidence: 99%

Migration and Removal of Labile Cadmium Contaminants in Paddy Soils by Electrokinetic Remediation without Changing Soil pH

Luan

Zhou

et al. 2022

IJERPH

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Electrokinetic remediation (EKR) is a viable, advanced cleaning strategy that can permanently reduce the toxicity of soil contaminants. However, EKR is prone to causing changes in soil pH. The negative impacts must be minimized if field-scale application is to be realized. In this study, EKR with polarity reversal was used to avoid soil pH polarization and to clean up cadmium (Cd)-contaminated paddy soils. Results showed that Cd desorbed from oxidizable and residual fractions to labile and easily available parts. Soil moisture content above 0.35 g g−1 was conductive to achieving the desirable Cd-migration rate. The exchangeable Cd phase eventually migrated from both ends of that soil compartment towards the intermediate. Moreover, the addition of citric acid at the concentration of 0.1 mol L−1 was an effective enhancement strategy. The methodology enriched Cd contaminants to specific sites. The technology can be used for electrokinetic-assisted phytoremediation during the rice growing period. Hyperaccumulator is planted in the intermediate area to remove the Cd contaminants. On the other hand, Cd removal is achieved in the region close to the electrodes. The present study provides a theoretical basis for in situ remediation. It has a wider significance for field-scale application.

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Section: Resultsmentioning

confidence: 99%

Migration and Removal of Labile Cadmium Contaminants in Paddy Soils by Electrokinetic Remediation without Changing Soil pH

Luan

Zhou

et al. 2022

IJERPH

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“…Graphite electrodes as anodes as well as an iron electrode as a cathode, with dimensions 0.2 × 12 × 7.5 cm were used. [ 19 ]…”

Section: Methodsmentioning

confidence: 99%

“…In Serbia, current regulations require dredging and treatment of sediment in watercourses when metals are detected in excessive amounts (class 3, class 4). [ 24 ] A detailed explanation of Serbian regulations is presented by Dubovina et al., [ 25 ] Kerkez et al., [ 26 ] Krčmar et al., [ 19 ] and Varga et al. [ 17 ] In our previous research [ 19 ] 2D EK treatment proved to be very successful for Ni removal.…”

Section: Introductionmentioning

confidence: 97%

“…[ 18 ] for removing Cr from soil, by Krčmar et al. [ 19 ] for removing Ni from sediment, and by Hussein and Alatabe [ 20 ] for removing Pb from soil.…”

Section: Introductionmentioning

confidence: 99%

“…[ 24 ] A detailed explanation of Serbian regulations is presented by Dubovina et al., [ 25 ] Kerkez et al., [ 26 ] Krčmar et al., [ 19 ] and Varga et al. [ 17 ] In our previous research [ 19 ] 2D EK treatment proved to be very successful for Ni removal. Moreover, in the study referred to above, we applied a model which showed satisfactory agreement with the experimental results.…”

Section: Introductionmentioning

confidence: 99%

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Copper removal from sediment by electrokinetic treatment with electrodes in a hexagonal configuration

Duduković

Beljin

Dubovina

et al. 2023

CLEAN Soil Air Water

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This study was conducted to examine the effectiveness of removing Cu from sediment by electrokinetic (EK) treatment with electrodes in a hexagonal configuration, and whether water leached can be reused. Three experiments were performed (e1: continuous application of electricity, e2: no electricity at night, e3: application of solar panels) to evaluate the impact of the absence of electricity during night and the variations that may occur during the day when solar panels were used on the efficiency of the treatment. At the end of the treatments, 2-13% more Cu was detected in the cathode region (locations 5 and 10) compared to the initial concentration. Furthermore, based on the calculated mass balance, we concluded that Cu was bound to the electrode surface. In the remaining EK cell locations, the Cu content was reduced by 50-60% for e1, e2, and e3. For field application, treatment e3, in which solar panels are applied, is recommended, since there are no significant differences in the achieved efficiencies. A significant advantage of the treatment from an ecological point of view is reflected in the absence of an acidification effect. In this study, we also applied a model which showed satisfactory agreement with the experimental results. Analyses of leached water after electrokinetic treatments, e1, e2, e3, indicate that this water has a potential for irrigation use of agricultural land, aiming to meet the goals of the circular economy.

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Electrokinetic Remediation of Dredged Contaminated Sediments

Pedersen

Benamar

Ammami

et al. 2021

Electrokinetic Remediation for Environmental Security and Sustainability

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Application of hexagonal two dimensional electrokinetic system on the nickel contaminated sediment and modelling the transport behavior of nickel during electrokinetic treatment

Cited by 19 publications

References 27 publications

Migration and Removal of Labile Cadmium Contaminants in Paddy Soils by Electrokinetic Remediation without Changing Soil pH

Migration and Removal of Labile Cadmium Contaminants in Paddy Soils by Electrokinetic Remediation without Changing Soil pH

Copper removal from sediment by electrokinetic treatment with electrodes in a hexagonal configuration

Electrokinetic Remediation of Dredged Contaminated Sediments

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