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Hybrid and enhanced electrokinetic system for soil remediation from heavy metals and organic matter

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Hybrid and enhanced electrokinetic system for soil remediation from heavy metals and organic matter
The electrokinetic(EK)process has been proposed for soil decontamination from heavy metals and organic matter.The advantages of the EK process include the low operating energy,suitability for fine-grained soil decontamination,and no need for excavation.Dur-ing the last three decades,enhanced and hybrid EK systems were developed and tested for improving the efficiency of contaminants removal from soils.Chemically enhanced-EK processes exhibited excellent efficiency in removing contaminants by controlling the soil pH or the chemical reaction of contaminants.EK hybrid systems were tested to overcome environmental hurdles or technical drawbacks of decontamination technologies.Hybridiza-tion of the EK process with phytoremediation,bioremediation,or reactive filter media(RFM)improved the remediation process performance by capturing contaminants or facilitating biological agents'movement in the soil.Also,EK process coupling with solar energy was proposed to treat off-grid contaminated soils or reduce the EK energy requirements.This study reviews recent advancements in the enhancement and hybrid EK systems for soil remediation and the type of contaminants targeted by the process.The study also cov-ered the impact of operating parameters,imperfect pollution separation,and differences in the physicochemical characteristics and microstructure of soil/sediment on the EK per-formance.Finally,a comparison between various remediation processes was presented to highlight the pros and cons of these technologies.

ElectrokineticSoil remediationReactive filter mediaEnhanced electrokineticContaminants

Faris M.Hamdi、Namuun Ganbat、Ali Altaee、Akshaya K.Samal、Ibrar Ibrar、John L.Zhou、Adel O.Sharif

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Centre for Green Technology,School of Civil and Environmental Engineering,The University of Technology Sydney,15 Broadway,NSW 2007,Australia

Department of Civil Engineering,Jazan University,Jazan 82822,Saudi Arabia

Centre for Nano and Material Sciences,Jain University,Ramanagara,Bangalore,Karnataka 562 112,India

School of Mechanical Sciences,Faculty of Engineering and Physical Sciences,University of Surrey,Australia

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Electrokinetic Soil remediation Reactive filter media Enhanced electrokinetic Contaminants

2025

10.1016/j.jes.2023.11.005

环境科学学报(英文版)
中科院生态环境研究中心

环境科学学报(英文版)

影响因子：0.862
ISSN：1001-0742
年,卷(期)：2025.147(1)