Electrokinetic remediation: An innovation for heavy metal contamination in the soil environment

Rahman, Zunaithur; Jagadheeswari,; Mohan, Arun Ram; Tharini,; Selvendran,; Priya, Shanmuga

doi:10.1016/j.matpr.2020.08.541

Cited by 13 publications

(6 citation statements)

References 29 publications

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“…Reuss in 1808 in which the mobilisation of water as well as other chemical components towards the preferred electrode was executed by introducing an electrical gradient [ 50 ]. This was further implemented for the treatment of contaminated soil by Helmholtz in 1879, the efficiency of which was later enhanced by Pellat in 1903 and Smoluchowski in 1921 [ 51 ]. Upon further understanding and improvement in the implementation, in the early twentieth century, Ruess applied a DC to a mixture of clay and water, thus leading to the movement of water through capillary action toward the cathode.…”

Section: Overview Of Ekr Technology For Soil Remediationmentioning

confidence: 99%

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Technological and economic analysis of electrokinetic remediation of contaminated soil: A global perspective and its application in Indian scenario

Akansha,

Thakur,

Chaithanya

et al. 2024

Heliyon

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Section: Overview Of Ekr Technology For Soil Remediationmentioning

confidence: 99%

“…EKR is an emergent technology for the removal or extraction of heavy metals from contaminated soil. It is applicable to both ex-situ and in-situ for fine-grained soil [ 51 ]. It has many advantages over other conventional methods.…”

Section: Overview Of Ekr Technology For Soil Remediationmentioning

confidence: 99%

Technological and economic analysis of electrokinetic remediation of contaminated soil: A global perspective and its application in Indian scenario

Akansha,

Thakur,

Chaithanya

et al. 2024

Heliyon

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“…Soil contamination by heavy metals poses a great risk to human health, animals, plants, microorganisms and their interactions [1]. In humans, for example, prolonged exposure to contaminated soils has negative effects on the central nervous system, the gastric system and the respiratory system [2,3].…”

Section: Introductionmentioning

confidence: 99%

Recognition of Heavy Metals by Using Resorcin[4]arenes Soluble in Water

Sanabria

Esteso

Vargas

2022

Toxics

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The complexing properties of two water-soluble resorcin[4]arenes (tetrasodium 5,11,17,23-tetrakissulfonatemethylen 2,8,14,20-tetra(butyl)resorcin[4]arene, Na4BRA, and tetrasodium 5,11,17,23-tetrakissulfonatemethylen-2,8,14,20-tetra(2-(methylthio)ethyl)resorcin[4]arene, Na4SRA) with polluting heavy metals such as Cu2+, Pb2+, Cd2+ and Hg2+ were studied by conductivity, and the findings were confirmed by using other techniques to try to apply this knowledge to removing them. The results indicate that Na4BRA is able to complex Cu2+ in a 1:1 ratio and Pb2+ in a 1:2 ratio, while Na4SRA complexes Hg2+ in a 1:1 ratio. On the contrary, no indications have been observed that either of the resorcin[4]arenes studied complexes the Cd2+ ions. The results suggest that the bonds established between the sulfur atoms located at the lower edge of the SRA4− and the solvent hydrogens could prevent the entry of the guest into the host cavity. However, in the case of Hg2+ ions, the entry is favoured by the interactions between the sulfur donor atoms present on the lower edge of Na4SRA and the Hg2+ ions. Therefore, it can be said that Na4BRA is selective for Cu2+ and Pb2+ ions and Na4SRA is selective for Hg2+ ions.

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“…Nowadays soil contamination has been regarded as one of the most concerning environmental di culties with serious implications for human health (Moghadam et al, 2016;Abharyan et al, 2022). The sources of soil pollution are both natural processes and different anthropogenic activities (Rahman et al 2021; Wang et al, 2021). One of the most important pollution types in the soil system is heavy metal (HM) pollution such as Cd, Pb, Ni and Zn (Keshavarz et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…Several physical, chemical, and biological approaches have been used to decontaminate polluted soils (Girma, 2015;Wei et al, 2016;Rahman et al, 2021). Electrokinetic as an in-situ and low cost approach is a widely admitted technology for remediating contaminated soil (Acar & Alshawabkeh, 1993;Acar et al, 1995;Ammami et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Electrical approach for decontaminating a multi-metal polluted soil as influenced by electrolyte type and soil position

Keshavarz

Ghasemi-Fasaei

Ronaghi

et al. 2022

Preprint

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The remediation of heavy metals contaminated soils is increasingly a global problem with serious implications for human health. This study aimed to evaluate the in-situ remediation performance of multi element contaminated soil by the electrokinetic. To achieve this, the effects of chelating agents (water, ethylenediamine tetraacetic acid (EDTA), diethylenetriamine pentaacetic acid (DTPA)), potential gradient (0, 1, and 2 V cm− 1), and position of soil in electrokinetic cell on metals fractions and metals removal were investigated. The results revealed that the electric potential difference and application of EDTA or DTPA electrolyte generally enhanced heavy metals removal efficiency and for Ni and Pb the interactions effects of these factors were significantly positive. Results showed that Ni, Zn, Cd, and Pb removal efficiency is highest with DTPA, DTPA, EDTA and EDTA electrolytes, respectively. In particular, the usage of electric current remarkably shifted the soil-metal bonds from stable (residual) to a less stable (mobile and mobilisable) fraction. The optimum electric current for the removal of Zn, Cd, and Ni was 1, 1, and 2 V cm− 1, respectively, which removed 44, 47 and 41% of the average of these heavy metals in soil, respectively. Results of present study demonstrated that removal efficiency was highly metal-dependent; and the order of metals removal was Cd > Ni > Zn > Pb.

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Electrokinetic remediation: An innovation for heavy metal contamination in the soil environment

Cited by 13 publications

References 29 publications

Technological and economic analysis of electrokinetic remediation of contaminated soil: A global perspective and its application in Indian scenario

Technological and economic analysis of electrokinetic remediation of contaminated soil: A global perspective and its application in Indian scenario

Recognition of Heavy Metals by Using Resorcin[4]arenes Soluble in Water

Electrical approach for decontaminating a multi-metal polluted soil as influenced by electrolyte type and soil position

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