The hindering effect of experimental strategies on advancement of alkaline front and electroosmotic flow during electrokinetic lake sediment treatment

Virkutytė, Jūratė; Sillanpää, Mika

doi:10.1016/j.jhazmat.2007.01.014

Cited by 21 publications

(5 citation statements)

References 37 publications

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“…This would prevent a biological mechanism from the selected consortia. However, the final value was still far from the extreme values that are typically obtained when no buffer is added, which previous works in the literature (Kim et al, 2005;Chang and Liao, 2006;Virkutyte and Sillanpää, 2007) report can even rise up to 14. In the PR-EKSF experiment, the selected strategy effectively controlled the acidic and basic pH fronts in the treated soil (Fig.…”

Section: Resultscontrasting

confidence: 56%

Combination of bioremediation and electrokinetics for the in-situ treatment of diesel polluted soil: A comparison of strategies

Ramírez

Villaseñor

Rodrigo

et al. 2015

Science of The Total Environment

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The aim of this work is to compare different strategies based on electrokinetic soil flushing and bioremediation for the remediation of diesel-polluted soil. Four options were tested at the laboratory scale: single bioremediation (Bio), performed as a control test; a direct combination of electrokinetic soil flushing and biological technologies (EKSF-Bio); EKSF-Bio with daily polarity reversal of the electric field (PR-EKSF-Bio); and a combination of electrokinetic soil flushing and a permeable reactive biological barrier (EKSF-BioPRB). Four batch experiments of 14 days duration were carried out for comparing technologies at room temperature with an electric field of 1.0 V cm(-1) (in EKSF). A diesel degrading microbial consortium was used. The experimental procedure and some specific details, such as the flushing fluids used, varied depending on the strategy. When using the EKSF-Bio option, a high buffer concentration was required to control the pH, causing soil heating, which negatively affected the biological growth and thus the diesel removal. The PR-EKSF-Bio and the EKSF-BioPRB options attained suitable operating conditions and improved the transport processes for biological growth. Polarity reversal was an efficient option for pH, moisture and temperature control. Homogeneous microbial growth was observed, and approximately 20% of the diesel was removed. The BioPRB option was not as efficient as PR-EKSF-Bio in controlling the operating conditions, but the central biobarrier protected the biological activity. Microbial growth was observed not only in the biobarrier but also in a large portion of the soil, and 29% of the diesel was removed in the short remediation test.

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Section: Resultscontrasting

confidence: 56%

Combination of bioremediation and electrokinetics for the in-situ treatment of diesel polluted soil: A comparison of strategies

Ramírez

Villaseñor

Rodrigo

et al. 2015

Science of The Total Environment

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“…investigated Pb 2+ immobilization in soils by ball milling using different soil media, namely bentonites, kaolinites, and sandy soil. It was demonstrated that the leachable Pb 2+ was reduced from 1.3 to below 0.015 ppm in bentonites and that similar results were obtained in sandy soil and kaolinites Virkutyte and Sillanpaa (2007). used different membranes and barriers to minimize the alkaline front during the remediation of heavy metal containing soils using an electrokinetic process.…”

mentioning

confidence: 60%

Hazardous Waste Treatment Technologies

Khan¹,

Li²,

Huang³

2008

Water Environment Research

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“…The feasibility of electrodialytic remediation (EDR) of sludge contaminated by heavy metals when suspended in an aqueous solution was documented earlier for other types of sediments and sludge, e.g., by removal of Cu, Pb, and Zn from harbor sediments [9,10] and extraction of P, Cd, Cu, Cr, Pb, Zn, Ni from wastewater sludge [11]. Only few studies were, however, made on freshwater sediments: Virkutyte and Sillanapää [12] showed that hindering the development of an alkaline front by use of a cation exchange membrane (i.e. by implementing electrodialysis) improved Cu remediation compared to using filter paper as a barrier between sediment and catholyte.…”

Section: Introductionmentioning

confidence: 99%

Electrodialytic Remediation of Toxic Elements and P Recovery from Sediments of Eutrophic Fresh-Waters in 3-Compartment Batch and Stack Setup

Jensen

Kirkelund

Fritt-Rasmussen

et al. 2022

Waste Biomass Valor

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The hindering effect of experimental strategies on advancement of alkaline front and electroosmotic flow during electrokinetic lake sediment treatment

Cited by 21 publications

References 37 publications

Combination of bioremediation and electrokinetics for the in-situ treatment of diesel polluted soil: A comparison of strategies

Combination of bioremediation and electrokinetics for the in-situ treatment of diesel polluted soil: A comparison of strategies

Hazardous Waste Treatment Technologies

Electrodialytic Remediation of Toxic Elements and P Recovery from Sediments of Eutrophic Fresh-Waters in 3-Compartment Batch and Stack Setup

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