Combined effects of high voltage gradient and electrolyte conditioning on electrokinetic remediation for chromium (VI)-contaminated soils

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dc.authorid0000-0002-8191-1599en_US
dc.authorscopusid12797710500en_US
dc.authorwosid-en_US
dc.contributor.authorTaneja, Sonam
dc.contributor.authorKaraca, Öznur
dc.contributor.authorHaritash, A. K.
dc.date.accessioned2023-09-09T11:57:29Z
dc.date.available2023-09-09T11:57:29Z
dc.date.issued2023en_US
dc.departmentFakülteler, Mühendislik Fakültesi, Jeoloji Mühendisliği Bölümü
dc.description.abstractDisposal of chromium-containing industrial waste has led to soil contamination at dispersed locations around the globe. Considering the carcinogenic, non-biodegradable, and bioaccumulating nature of hexavalent chromium Cr (VI), it is per-tinent to treat the contaminated soils. Electrokinetic Remediation (EKR) is a promising technology to remediate metal-contaminated soils under the influence of an electric field. This study investigated the removal of Cr (VI) by EKR, enhanced with a combination of high voltage (50 V), electrolyte conditioning using EDTA (0.1 M), and type of electrode material. Under controlled conditions using distilled water, low voltage (20 V at 1 V/cm) resulted in 22% removal, while high volt-age (50 V at 2.5 V/cm) resulted in 55% removal of Cr (VI) in 10 h of treatment period. The removal was further enhanced to 77% by amending with ethylenediaminetetraacetic acid (EDTA 0.1 M) as an electrolyte at a high voltage gradient of 2.5 V/cm. Classifying the role of electrode (graphite and stainless steel), based on the removal efficiency and corrosion of electrodes, graphite resulted in higher removal compared to stainless steel but with a significantly higher corrosion effect. Characterization of soil after EKR experiments exhibited improved liquid and plastic limits, and insignificant difference in Total Organic Carbon (TOC) and other parameters related to soil health. Energy consumption and cost-estimation revealed that application of high voltage, along with conditioning of electrolyte with EDTA can significantly increase removal of Cr (VI) in short period of time in a cost-effective (0.8 US$/g) way, thereby can be applied for rapid treatment of large volumes of soil without affecting the properties of soil.en_US
dc.identifier.citationTaneja, S., Karaca, O., & Haritash, A. K. (2023). Combined effects of high voltage gradient and electrolyte conditioning on electrokinetic remediation for chromium (VI)-contaminated soils. Rendiconti Lincei. Scienze Fisiche e Naturali, 34(2), 635–646. https://doi.org/10.1007/s12210-023-01159-zen_US
dc.identifier.doi10.1007/s12210-023-01159-z
dc.identifier.endpage646en_US
dc.identifier.issn2037-4631
dc.identifier.issn1720-0776
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-85152361529
dc.identifier.startpage635en_US
dc.identifier.urihttps://doi.org/10.1007/s12210-023-01159-z
dc.identifier.urihttps://hdl.handle.net/20.500.12428/4536
dc.identifier.volume34en_US
dc.identifier.wosWOS:000967643700002
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorKaraca, Öznur
dc.language.isoen
dc.publisherSpringer Science and Business Media Deutschland GmbHen_US
dc.relation.ispartofRendiconti Linceien_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectEDTAen_US
dc.subjectElectrokinetic remediationen_US
dc.subjectGraphiteen_US
dc.subjectHexavalent chromiumen_US
dc.subjectVoltageen_US
dc.titleCombined effects of high voltage gradient and electrolyte conditioning on electrokinetic remediation for chromium (VI)-contaminated soils
dc.typeArticle

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