Current Volume 9
Influence of Coconut Shell Ash-Enhanced Filter Media in Electrokinetic Remediation (EKR) Treatment of Petroleum-Contaminated Soils
Abstract
Petroleum contamination significantly degrades the physical, chemical, and geotechnical properties of soils in oil-producing regions. Electrokinetic remediation (EKR) has emerged as a promising technology for treating low-permeability soils, but its efficiency is strongly influenced by the nature of the electrode filter media. This study investigates the performance of coconut shell ash (CSA) as an enhanced filter medium in the EKR treatment of crude-oil-contaminated soil (COCS). Laboratory EKR cells were operated for a fixed duration using ethanol and acetone cosolvents to facilitate hydrocarbon mobility. Results show that CSA significantly improved contaminant migration toward the cathode and increased total petroleum hydrocarbon (TPH) removal efficiency. The EKR system with CSA achieved a maximum TPH removal of approximately 74.6%, outperforming acetone-assisted systems (≈67.8%). Post-treatment soils also exhibited improvements in geotechnical properties, including higher dry density and reduced plasticity index. These findings demonstrate that CSA is a low-cost, environmentally friendly additive that enhances the efficiency of EKR systems. The study provides insight into sustainable waste-to-resource applications for tropical engineering practice.
Keywords
Electrokinetic Remediation, Petroleum-Contaminated Soil, Coconut Shell Ash (CSA), Hydrocarbon Removal, Cosolvent Flushing, Geotechnical Restoration, Sustainable Soil Treatment.
Citations
IRE Journals:
John E. Sani, Muhammad S. Mohammad, Ishaku M. Victor, George. Moses "Influence of Coconut Shell Ash-Enhanced Filter Media in Electrokinetic Remediation (EKR) Treatment of Petroleum-Contaminated Soils" Iconic Research And Engineering Journals Volume 9 Issue 10 2026 Page 4222-4230 https://doi.org/10.64388/IREV9I10-1717139
IEEE:
John E. Sani, Muhammad S. Mohammad, Ishaku M. Victor, George. Moses
"Influence of Coconut Shell Ash-Enhanced Filter Media in Electrokinetic Remediation (EKR) Treatment of Petroleum-Contaminated Soils" Iconic Research And Engineering Journals, 9(10) https://doi.org/10.64388/IREV9I10-1717139
About IRE Journals
IRE Journals is an open access online journals established with an aim to publish high quality of research work in various diciplines. We have more than 6 years in publications. Over 2500+ papers already published.
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