Permeable reactive barrier (PRB) integrated with electrokinetic geosynthetic (EKG) is an enhancement technique to improve the efficiency of in-situe heavy metal contaminated soil remediation. In this study, EKG-PRB was considered under cyclic loading conditions to remediate copper contaminated soil. Also, the basis of remediation is the implementation of electrokinetic geosynthetic (EKG) materials as electrodes and fabricated composite nanofibers as a permeable reactive barrier. Therefore, nanofibers electrospun with graphene nanoparticle inclusion were designed and constructed. To assess the performance of EKG-PRNB technique on remediation of a copper contaminated soil, an experimental apparatus was designed, and various tests were categorized into EKG and EKG-PRNB groups. All tests were carried out under the similar conditions, cyclic loading (7-113 kPa), drainage condition (open cathode-closed anode), duration (60 h), and a voltage gradient of 1 V cm- 1 with a tolerance of +/- 0.1. The EKG was carried out without utilizing the PRB, while EKG-PRNB experiments were conducted using a permeable reactive nanofiber barrier in different positions, adjacent to cathode (PRNB0) and at a distance of 4 cm from the cathode (PRNB1). According to the results, PRNB were fabricated with a specific surface area of 19.423 m2 g- 1 and a maximum adsorption capacity of 81.43 mg g-1. Copper removal efficiency in drainage water reached 97.4 %, with copper immobilization efficiency approximately 14 %. Results demonstrated that the positioning of the reactive barrier had no statistically significant impact on the electrokinetic remediation system performance, removal efficiency, settlement, and consolidation degree.

来源平台：JOURNAL OF ENVIRONMENTAL MANAGEMENT