Electrokinetic soil remediation — critical overview

Virkutytė, Jūratė; Sillanpää, Mika; Latostenmaa, Petri

doi:10.1016/s0048-9697(01)01027-0

Cited by 794 publications

(441 citation statements)

References 30 publications

Supporting

Mentioning

430

Contrasting

Unclassified

Order By: Relevance

“…Therefore, the composition of electrolytes changed, lowering the conductivity value. However, the highest conductivity decrease can be observed in the reactors with the electric current, which can be explained by an additional change in the structure of the electrolytes caused by electrolysis [25].…”

Section: Results and Discussion Ph Orp And Conductivity Changes Durimentioning

confidence: 97%

Use of Various Zero Valent Irons for Degradation of Chlorinated Ethenes and Ethanes

Nosek

Cádrová

Antoš

et al. 2015

Ecological Chemistry and Engineering S

View full text Add to dashboard Cite

Amongst all of the reducing agents that can be used in environmental remediation, zero valent iron (ZVI) is one of the most common due to its environmental acceptance, high reaction rate, good availability, and long-term stability. Moreover, ZVI mobility, stability and reactivity can be enhanced by the application of a DC electric current, ie electrokinetics (EK). In the study, six various slurries containing different ZVI were tested for their efficacy for chlorinated ethenes and ethanes degradation. Chlorinated compound concentrations, pH, oxidation-reduction potential (ORP) and conductivity were determined during the long-term kinetic test. Kinetic rate constants calculated for the degradation of three chlorinated ethenes (PCE, TCE and cis-DCE) concluded that EK brings substantial contribution to chlorinated compounds degradation. Nano-scale zero valent iron STAR had the highest reaction rates compare to the other ZVI tested. The performed study could serve as a preliminary assessment of various available ZVI before in-situ application.

show abstract

Section: Results and Discussion Ph Orp And Conductivity Changes Durimentioning

confidence: 97%

Use of Various Zero Valent Irons for Degradation of Chlorinated Ethenes and Ethanes

Nosek

Cádrová

Antoš

et al. 2015

Ecological Chemistry and Engineering S

View full text Add to dashboard Cite

show abstract

“…Desirable plant species are those that are fast-growing, have a high biomass, and can be easily harvested [14]. Reported costs are scarce in the literature but a cost of 50-200 US $/m 3 is reported by Virkutyte et al [16] for various methods applied in the 1990s. More recently, there has been interest in applying phytoremediation for Direct Recovery, this is called 'phytomining' (or agromining) and the estimated profitability of Ni phytomining using Berkheya coddii on serpentine soils rich in Ni (Australia) has been recently estimated at 11,500 AU$/ha/yield and the profitability of Au phytomining using Brassica juncea is about 26,000 AU$/ha/yield [17].…”

Section: Contaminated Land Remediation Technologiesmentioning

confidence: 99%

In Situ Resource Recovery from Waste Repositories: Exploring the Potential for Mobilization and Capture of Metals from Anthropogenic Ores

Sapsford

Cleall

Harbottle

2016

J. Sustain. Metall.

View full text Add to dashboard Cite

Wastes and the waste repositories in which they reside are becoming targets for resource recovery, both for legacy wastes and for future waste arisings as part of a desire to move toward a circular economy. There is an urgent requirement to explore concepts for practicable technologies that can be applied to these ends. This paper presents a synthesis of concepts concerning in situ technologies (developed from mining and contaminated land remediation industries) that have enormous potential for application to technospheric mining. Furthermore, potential target waste streams and their mineralogy and character are presented along with a discussion concerning lixiviant and metal capture systems that could be applied. Issues of preferential flow (critical to the success of in situ techniques) and how to control it with engineering measures are discussed in detail. It is clear that in situ recovery of metals from anthropogenic ores is a novel technology area that links new sustainable remediation approaches for contaminated materials and technospheric mining for closing material loops, and warrants the further research and development of technologies applicable to major waste streams.

show abstract

“…The contaminants are, in turn, removed by a variety of electrochemically occurring phenomena (water oxidation and reduction, heat transfer) and transport mechanisms-processes (electromigration, electroosmosis, and electrophoresis) which act either individually or synergistically [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Performance of electroremediation in real contaminated sediments using a big cell, periodic voltage and innovative surfactants

Hahladakis

Latsos

Gidarakos

2016

Journal of Hazardous Materials

View full text Add to dashboard Cite

The present work focused on evaluating the electrokinetic (EK) treatment of real contaminated sediments with toxic metals and polycyclic aromatic hydrocarbons (PAHs), using a big laboratory EK cell, periodic voltage and recently tested non-ionic surfactants. The results indicated that the "day on-night off" application mode of voltage, in conjunction with the selected solubilising agents, favoured the overall EK process. Arsenic, nickel and chromium exhibited the highest removal percentages, obtaining 83%, 67% and 63%, respectively, while zinc and lead attained 54% and 41% at the maximum. Furthermore, in the experiments where the non-ionic surfactants were introduced in the electrolyte chambers, there was a major uniformly removal of PAHs from the entire sediment across the EK cell, indicating the high solubilisation capacity of the enhancing agents. Essentially, transport and in some cases removal of PAHs (particularly from sections adjacent to the electrolyte compartments) also occurred in the unenhanced EK run, mainly due their negative charge, their potential weak bonds to the soil matrix and to the periodic application of voltage. Maximum removal was obtained by the use of Nonidet P40 where app. 1/3 (ca. 6498 g out of 20145 g) of the total initial amount of PAHs were removed from the cell.

show abstract

Electrokinetic soil remediation — critical overview

Cited by 794 publications

References 30 publications

Use of Various Zero Valent Irons for Degradation of Chlorinated Ethenes and Ethanes

Use of Various Zero Valent Irons for Degradation of Chlorinated Ethenes and Ethanes

In Situ Resource Recovery from Waste Repositories: Exploring the Potential for Mobilization and Capture of Metals from Anthropogenic Ores

Performance of electroremediation in real contaminated sediments using a big cell, periodic voltage and innovative surfactants

Contact Info

Product

Resources

About